Electronics Jobs

1: Simple Arduino device detecting a switch from a device 2: 2 RBG light strips with 16 LEDS 3: 4 input outputs for on and off

I’m building an IoT device around an STM32 microcontroller and need the complete hardware-plus-software package brought to life. The board must expose SPI, UART and I2C so I can hook in sensors and a radio module later, and all routing should follow good signal-integrity and low-power practices typical for connected products. You’ll start with the schematic, translate that into a compact multilayer PCB layout, then generate Gerbers ready for production. On the firmware side, clean, well-documented C code that compiles in STM32CubeIDE (or a comparable GCC toolchain) is essential; feel free to leverage HAL, LL drivers or FreeRTOS if it simplifies maintenance. Make sure every peripheral pinout matches the final PCB and provide a simple test routine that proves SPI, UART and I2C t...

This project is about building a physical “AI Secretary” system that combines a premium desk device with ultra‑simple wireless buttons people can stick anywhere to reach the same assistant. The goal is not just a gadget, but a coherent hardware family that makes interacting with my AI models feel tangible, fast, and effortless. At the center is the Desk Hub, a compact, high‑end box that lives on a desk like a small instrument. It has a small front display, a few physical buttons, a subtle light ring or LED bar, a microphone, and a speaker. Internally it runs on an ESP32‑class microcontroller with Wi‑Fi and Bluetooth. The Hub is always powered via USB‑C and always connected to my cloud backend, where all speech‑to‑text, language model processing, tools, and text‑to‑speech live. ...

I need an experienced FPGA programmer to assist with a data processing application. Key Requirements: - Proficiency in at least one of the following FPGAs: Xilinx, Altera, Lattice - Expertise in data processing applications - Familiarity with VHDL, Verilog, or SystemVerilog Ideal Skills and Experience: - Proven track record in FPGA programming - Strong background in data processing algorithms - Ability to work with various FPGAs and HDLs Please provide relevant experience in your bids. We need to develop ethernet hub in fiber optic 2 ports , and 16 SPI for chip led controller using data and clock . SPecia Ethernet protocol defined by us.

My KiCad design of USB2 to LPT converter based on FT2232H module is finished although needs some additional DRCs for production; I need a set of JLCPCB-compliant manufacturing files to be generated, so I can place the board order without any back-and-forth. Mainly for PCB manufacturing, but an option to prapare files for element assembly is also to be considered. What I need from you • Gerber package that includes Top/Bottom Copper, Solder Mask and Silkscreen layers, exported exactly as JLCPCB specifies. • <optionally> Pick and Place file in the format KiCad generates, double-checked for correct component rotations and reference designators. • Bill of Materials delivered as a single CSV, with each part’s JLCPCB LCSC number populated where applicable so I...

I want PCB design to order from JLCPCB. PCB combines an Ai-Thinker VC-02 Offline Voice Recognition Bare module with a CH32V003F4P6 MCU. The board will accept 5 V DC, step it down to 3.3 V through an AMS1117-3.3, and exchange UART data between the VC-02 and the CH32V003. Eight digital inputs—each pulled low to GND on trigger— to CH32V003. CH32V003 must switch eight relay (on the same PCB, sugar cube 5v relay) outputs that are driven in one neat block through a ULN2803ADWR. To make the VC-02 fully usable I need its programming port (TX, RX, VCC, GND), a speaker connector and a microphone connector on the PCB. A second programming header exposes PD1, VCC and GND for the CH32V003. All connectors together total six ports: 9-pin input (8 input and GND for return line to 8 input), bo...

Looking for a distribution Protection and Control Engineer to design integration of a 50MW solar plant into an existing utility substation. The solar plant supplies the existing utility substation by two 10km 33kV overhead lines. Design to ensure the new generation does not compromise the stability or safety of the existing network (Considering that at 50MW, dealing with significant fault level contributions and bi-directional power flow). 1. Input to be provided by the utility and the client: 1.1) Drawings of the existing substation. 1.2) Protection Interface: confirmation of the utility specific protection functions requirements (e.g., Line Differential, Distance, or simple Directional Overcurrent). 1.3) Confirm which signals must be sent to the utility's Control Center via SCADA...

We are developing a luxury smart ring wearable and are looking for an experienced hardware engineer to design a compact PCB/FPC for this device. This is a very small wearable device, so experience with ultra-compact electronics is essential. Device concept: Smart ring with biometric sensors and Bluetooth Low Energy connectivity. Main components planned: • Nordic nRF5340 BLE SoC • MAX86174 optical biometric sensor (PPG) • ICM-42670 motion sensor (IMU) • TMP119 temperature sensor • nPM1304 power management IC • External SPI Flash memory • Li-Po micro battery Design constraints: • Ring thickness target: 3–3.5 mm • PCB width: approx 5.5 mm • PCB length: approx 26–30 mm semicircle layout • Extremely low power consumption ...

I look for hardware developer. Electronics schema and pcb designer.

I am putting together a 120 V DC source for a high-current, high-power three-phase AC motor installation and need a rock-solid schematic that I can hand straight to my technicians for build-out. The design has to meet three key objectives in one compact drawing: deliver stable 120 V DC under heavy load, cope gracefully with the inrush and sustained current demanded by the motor, and integrate full protection against over-current, over-voltage, and thermal runaway. Because the application is industrial scale, I expect component choices rated to handle continuous high amperage, not just momentary peaks. Feel free to suggest whether a discrete rectifier stage, a switched-mode topology, or a hybrid arrangement makes most sense—so long as the final output stays clean and well-regulated...

I’m building a small arcade-style attraction made up of six identical stations. Each station will recognise when its hand-held controller is lifted by means of a magnetic sensor—or any other proper kind of sensor —then launch a three-minute countdown. Here is the user flow I need you to realise: 1. Controller is lifted → internal timer starts. 2. An OLED screen at that station immediately shows the remaining time, counting down in real time. 3. When the three minutes expire the screen simply replaces the countdown with a clear “Game Over, move to next zone ” message + a buzzer or light; 4. Once the controller is set back the system must reset itself, ready for the next player. Hardware thoughts so far: magnetic (reed or Hall) sensor to detect li...

I have a commercial IR-band Laser device with essentially two "Modes" - NORMAL and TRAINING, or restricted. Switching between the two can only be accomplished by accessing the Firmware via a proprietary 8-pin connection, for which I do not have a cable or interface. The candidate must either A) build a custom breakout to connect to the proprietary connector, or B) modify the OEM CONTROLLER pad and cable. Once the system is accessed, no custom coding, overwriting, or modification of the firmware will be required; the Candidiate need only identify the language, access the settings, and "flip the switch" between the two settings profiles. The hard part will be creating the connection. Something as simple as a POGO pin may be sufficient, but I am not qualified to say. T...

Looking for an Engineer with strong experience in industrial automation, control systems, and OT infrastructure. Freelancers should be proficient in following: ----->>> Configuration, maintenance and troubleshooting of HMI (C300, C300PM, UOC, HBM) ----->>> Support and troubleshooting of PLC systems and SCADA integration ----->>> Expertise in Control loop tuning and basic advanced control (PID) I am looking for experts from Pakistan only.

I'm in immediate need of an expert with PyroSim software experience who can provide a detailed fire simulation. Unfortunately, some considerations were missed initially, so it's critical that your knowledge is comprehensive. Job Requirements: - Experience with PyroSim - Understanding of fire behavior, specifically regarding the spread rate and heat transfer - Must also consider smoke movement and its influence on incidents - Strong analytical skills to interpret and make recommendations based on simulation results - Able to deliver the completed project ASAP Candidates with a background in Fire Engineering will be highly considered. This is an urgent project, so please only apply if you can start immediately.

Project Title: Convert traced sketch to precise PCB outline CAD drawing (DXF) Description: I have attached a traced sketch of a PCB outline with component placement references. The drawing was created by tracing, so it is not dimensionally accurate. The freelancer must recreate it cleanly in CAD and scale it correctly. Key requirement: The top horizontal width must be exactly 100 mm. All other dimensions and proportions should be adjusted accordingly to match the sketch layout. Scope of work: Recreate the PCB outer profile with the same chamfered corners. Add the display window area, keypad slot, connector reference cutouts, and LED alignment positions as shown in the sketch. Place the mounting holes at the same positions indicated in the drawing. Use standard M3 mounting hole size ...

I need an expert to set up Ignition SCADA and integrate it with one Allen-Bradley CompactLogix PLCs for monitoring an existing process. In addition we need a panel designed and integrated that will monitor compressed air and nitrogen. This will need to be SCADA integrated as part of implementation and visualization. We will need Allen Bradley / CompactLogix setup. Key Requirements: - Set up a new Ignition SCADA system - Integrate one existing CompactLogix PLCs/HMI panel/process - Design/Implement a new PLC/panel to monitor compressed air and nitrogen levels Ideal Skills: - Proficiency in Ignition SCADA - Experience with Allen-Bradley CompactLogix PLCs - Ability to design panels - Strong background in industrial automation and monitoring systems Please provide a detailed plan and timeli...

I am looking for an experienced mobile app designer/developer to help create the first prototype (MVP) of a mobile app Please let me know if you have experience designing sports performance or wearable technology apps, and if you can share examples of your previous work. Thanks

You will be the first line of defense for technical troubleshooting—fault codes, inverter resets, monitoring portal anomalies, sudden production drops—as well as the voice that guides owners on routine maintenance best practices. When an issue is beyond remote resolution, your clear, well-structured ticket notes will allow our on-site crews to step in without repeating diagnostics. Tools & workflow • HubSpot ticketing and knowledge-base (must already be comfortable; please outline your experience) • VoIP soft-phone or similar for outbound calls • Screen-sharing to walk clients through monitoring portals or firmware updates Daily rhythm Morning: sweep the queue, triage priority cases, and return any missed calls. Throughout the day: update ticket statuses,...

I need assistance connecting my Panasonic VCR/DVD combo to my HDMI-based TV. I already have an HDMI converter or adapter. Requirements: - Experience with A/V equipment - Familiarity with HDMI connections and converters - Problem-solving skills to ensure a proper setup Ideal Skills & Experience: - Background in electronics or A/V setup - Previous experience with VCR/DVD connections - Ability to work with various TV types (LED, LCD, Plasma)

We need a board that "translate" signal from DMX to led strip pixel adressable. Need to integrate RGB and RGBW pixel in various protocol, with clock or only data. Only one data signal needed (170 rgb pixel or 128 rgbw pixel to complete universe) -Possibilities to set start adress -Possibilities to control multiple pixel as one pixel (grouping for have total of 2x or 3x o 4x pixel controlled) -Setting IC ,Address and Grouping by dipswitch or other way accepted (also usb serial with proprietary software) -ALL SETTINGS NEED ALSO TO BE SETTED BY RDM -Usb or serial connector for upload firmware We are open to every system from arduino to anything. Need to be thinked in hardware and software side. Other this one we need a variant with pwm rgbw output with same feature like RDM, ...

I need a double-layer, signal-processing board laid out in Altium Designer and prepared for fabrication at JLCPCB. The finished board will fit inside a 15 cm × 15 cm envelope, so component placement, routing, and keep-outs should respect that medium-size constraint. Deliverables I expect: • Complete Altium project with schematics and PCB layout • Optimised Gerber, drill, and pick-and-place files matched to JLCPCB’s specs • BOM with manufacturer part numbers and assembly notes I will review the design by importing the files directly into Altium and running JLCPCB’s online DFM check; the job is complete once the files upload without errors and the board passes ERC/DRC.

I need a complete H∞-based control solution that lets my missile autopilot remain stable and reliable across a wide envelope of flight conditions and model uncertainties. The work starts from the nonlinear or linearised dynamics I will supply; from there, I expect you to derive or refine the state-space model, set up the weighted mixed-sensitivity formulation, and tune the H∞ controller so it meets industry-standard robustness and performance margins. Please implement and simulate everything in MATLAB/Simulink, documenting the exact toolbox functions and scripts you use so I can reproduce every step. When the design is closed, deliver: • Clean, well-commented MATLAB/Simulink files for the plant model, weighting functions, synthesis, and time-/frequency-domain analyses ...

I need the internal circuitry of the KK-82MS scientific calculator documented so I can design a drop-in replacement PCB. Your job is to open the unit, trace every relevant signal, and give me a clear map of what connects where. The focus is on both LCD behaviour and the button-scanning scheme, so I expect you to show how each LCD segment is driven, which pins act as commons, how the microcontroller multiplexes them, and the exact keyboard matrix rows and columns the processor polls. Feel free to combine a logic analyser, multimeter, oscilloscope, or any other bench tool you trust; choice of instrumentation is up to you as long as the final data are unambiguous. Deliverables • High-resolution photos of the calculator fully disassembled, including close-ups of the flex cables and IC m...

I have a stable FreeRTOS-based firmware that currently compiles only under my portable Arduino IDE 1.8.13 setup for the SAMD51 MCU. I now want the project to build and run cleanly in the latest Arduino IDE without carrying along any of those version-specific hacks, board package pin-tweaks, or legacy library work-arounds. Once the codebase is modernised, the next step is to extend it with new sensors. You will receive the present firmware, board-support files, and the partial sensor drivers at project start.

Hello, **We only consider the QC from China only** I have a consignment of electric Product - Mosquito Diffuser that will be ready to leave the factory in Chengdu, Sichuan, and I need an experienced quality inspector on-site before it ships out. The task is strictly a pre-shipment check focused on two areas: visual inspection of workmanship and packaging, and functionality testing of the finished units. You will visit the factory on the agreed date, work alongside the production team without disrupting their flow, and provide an independent report that lets me decide whether to release the balance payment to the supplier. Scope of work • Visual inspection – confirm cosmetic finish, labeling, accessories, and carton integrity meet the approved golden sample. • Functio...

I am looking for an experienced RF/antenna engineer to help optimise the performance of my dual-band antenna design integrated with a frequency selective surface (FSS). The antenna structure has already been designed and simulated. However, further optimisation is required to improve key performance parameters such as gain, bandwidth, return loss (S11), radiation characteristics, and polarisation performance at both operating frequencies. Scope of Work The selected expert will be expected to: 1. Analyse the existing dual-band antenna design 2. Optimize the Frequency Selective Surface (FSS) structure 3. Improve gain and bandwidth performance 4. Optimize S11 (return loss) and impedance matching 5. Achieve a broadside radiation pattern (0° direction) at both operating frequencies 6...

Hi, I'm looking for an experienced PCB designer to create a custom carrier/breakout PCB for a compact handheld device. No firmware or software needed — design only. Core Module: LILYGO TTGO T-Call V1.3 (ESP32 + SIM800L GSM) — mounted on the PCB via pin headers Components to integrate on PCB: OLED Display (SSD1306 128x64, I2C, 4-pin): Mounted above the PCB using standoff spacers — 4 mounting holes required Height will be adjusted with standoffs 4-wire cable from display soldered directly to PCB pads Buttons: 1x membrane switch connector (2-pin) for main button 2x additional button footprints connected to spare GPIO pins (for future use) Buzzer: Passive buzzer mounted directly on PCB Connected to designated GPIO via NPN transistor + flyback diode driver circuit ...

My Denon AVR drives a home theater system, and the moment the amplifier powers up the speakers erupt with a rolling, thunder-like rumble. The noise stops only when the unit is switched off. All speaker wires, RCA leads, HDMI runs, and power connections have been double-checked and seated firmly, so loose cabling does not appear to be the culprit. I’m looking for an experienced audio-electronics technician who can come on-site, trace the fault, and advise on the fix—whether that turns out to be a failing power-supply capacitor, a grounding issue, or something deeper on the amplifier’s main board. If parts need ordering, I’m happy to approve them once the underlying cause is confirmed. Please let me know: • Your house-call availability in the next week or ...

I need an engineer or team to create a working design for a parcel dimensioner that rivals the accuracy and reliability of a Cubiscan 325. The unit will live in a busy warehouse environment, so durability and quick “drop-and-scan” operation matter as much as precision. It doesn't have to be a similar design, but a similar function and success rate at measuring small irregular objects to the same size capability. Scope of measurement • Mixed-material parcels (paper, cardboard, plastic—anything that routinely moves through a fulfillment line) • Dimensions captured: length, width, height only—weight integration is not required at this stage Core expectations I’m looking for a complete, production-ready package: mechanical layout, electronic...

I need a wearable solution to block radio frequencies (RF). This should be a full-body suit to shield me completely. Requirements: - Design and create RF-blocking full-body suit - Comfortable and breathable for daily wear - Secure and adjustable fit - Lightweight materials preferred - Ideally, prior experience with RF-shielding materials and clothing design Ideal Skills and Experience: - Expertise in RF shielding - Knowledge of suitable materials - Experience in clothing design and manufacturing - Ability to create custom-fit solutions Please share relevant portfolios and experience.

Title: Mechanical & Electrical Engineers Needed for Bionic Arm Project (CAD + PCB Design) Description: I am developing a bionic prosthetic arm project and I’m looking for engineers to help with both the mechanical design and electronics/PCB design. Roles Needed: 1. Mechanical Engineer - Experience with CAD software (Fusion 360 preferred but not required) - Design and improve a 3D-printable prosthetic hand/arm - Work with servo-driven mechanisms for finger movement - Ensure parts are strong, lightweight, and easy to assemble - Help optimize the design for 3D printing 2. Electrical Engineer - Experience with PCB design (KiCad, Altium, EasyEDA, or similar) - Design a custom PCB to control and integrate: - 11 servo motors - 5 EMG muscle sensors - 2 oximeter sensors to m...

Who Should Apply Please apply only if you have direct experience in electrical symbol creation, library development, or related automation systems. This project requires more than general coding ability. Preference will be given to freelancers who can demonstrate a clear understanding of the requirement and prior implementation experience in this area. Project Overview I am looking for an experienced freelancer to develop an AI-assisted electrical schematic symbol automation tool with a strong focus on accuracy, structured symbol generation, editing flexibility, and multi-EDA export support. Core Concept The main concept of this project is as follows: A user will open a component datasheet from a website, PDF, browser, or any other source. The user should be able to capture the pin d...

Title: Mechanical & Electrical Engineers Needed for Bionic Arm Project (CAD + PCB Design) Description: I am developing a bionic prosthetic arm project and I’m looking for engineers to help with both the mechanical design and electronics/PCB design. Roles Needed: 1. Mechanical Engineer - Experience with CAD software (Fusion 360 preferred but not required) - Design and improve a 3D-printable prosthetic hand/arm - Work with servo-driven mechanisms for finger movement - Ensure parts are strong, lightweight, and easy to assemble - Help optimize the design for 3D printing 2. Electrical Engineer - Experience with PCB design (KiCad, Altium, EasyEDA, or similar) - Design a custom PCB to control and integrate: - 11 servo motors - 5 EMG muscle sensors - 2 oximeter sensors to m...

I need a complete engineering package for a compact, stainless-steel (SS316) system that transfers two high-pressure gases—oxygen and a second gas—from 4 L, 1 800-2 000 psi supply cylinders into a 5 L storage tank. The small tank will serve purely for storage. Filling must occur in a defined sequence: first oxygen to a set intermediate pressure, then the second gas until the vessel reaches roughly 1 000 psi total. Gas purging is the preferred method for every line before and after each fill so that no pressure or cross-contamination remains prior to disconnecting the storage tank. The layout has to stay very tight—short runs only—and all wetted parts are to be SS316. Control and safety monitoring will be handled through a PLC with an HMI. Plan on integrating: &b...

I need a complete hardware-and-firmware solution that blends a PIC microcontroller with Arduino-compatible modules on a custom-made PCB. The end goal is to streamline several industrial processes, and I also want the design flexible enough to drive lighting, heating & cooling, and security subsystems that resemble home-appliance automation. Here is what I envisage: • Schematic and PCB layout ready for fabrication, including a clean separation between the PIC control core and any auxiliary Arduino shields or sensor breakouts. • Embedded C / Arduino-style firmware that handles real-time control loops, sensor inputs, and actuator outputs for an industrial environment. • A concise BOM with component part numbers that are actually in stock. • Production-ready Ger...

I’m putting together a natural-gas industrial heating line and need a burner engineered to deliver between 300,000 and 1,000,000 BTU/hr. The goal is reliable, steady heat for process heating—no power generation or incineration duties—so flame stability, turn-down ratio, and straightforward maintenance are priorities. Here’s what I’d like from you: • A complete burner design (mechanical layout, materials, and sizing) compatible with standard natural-gas supply pressures. • Combustion calculations that verify the stated heat output and outline achievable efficiency. • A bill of materials with part numbers that are globally available, plus any proprietary components clearly flagged. • Recommended control scheme—including safety ...

I’m building a microcontroller-based system around an stm32 and need compact, reliable embedded-C firmware that lets me read multiple sensors and move their data cleanly through standard communication channels. The core of the job is classic microcontroller programming: bring up the chip, initialise the peripherals that the sensors require (typical I²C, SPI or simple GPIO timing), perform periodic reads, apply any basic filtering the devices recommend, then expose the results over the communication protocols we agree on—UART is mandatory; CAN or USB-CDC would be a welcome extra if time allows. You will be working with the latest STM32CubeIDE tool-chain, so please be comfortable with HAL and, where efficiency demands, direct-register work. I’ll supply full pin-outs, ...

We are a climate-tech company based in Coimbatore, India, seeking an experienced Electrical Control Panel Engineer or UL/CSA-certified Fabricator to design and build a compliant industrial control panel for export to Canada. The panel must meet UL 508A (USA) and CSA C22.2 No. 286 (Canada) standards. The system will power and control our environmental air-purification unit integrated with IoT/PLC components. Scope of Work: Design, fabricate, and document a complete industrial control panel using UL/CSA-certified components. Include a Main Power Cord (SOOW or SJTO type) and a UL-listed Circuit Breaker (Type C or D curve) for primary overcurrent protection. Integrate a DIN-rail mounted SMPS (24VDC output) to power either a PLC (Allen-Bradley/Siemens) or a custom PCB-based controller. Pr...

I'm seeking an expert to prototype the electric chassis wiring for an electric trolley designed to transport tools. Key requirements include: - Design and implement wiring for electric chassis - Ensure safety and reliability Ideal skills and experience: - Electrical engineering background - Experience with electric vehicle wiring - Strong problem-solving skills Please provide relevant experience in your bids.

Note - I want someone to make & get one machine ready for me so please bid if you can handle everything from design to manufacturing. I am developing a compact, battery-powered device that continuously feeds a roll of sticky mat across a doorway so the exposed surface always stays clean. The concept is simple: a fresh section of mat is pulled from one spindle, laid flat, and the used layer is wound onto a take-up reel. Here’s what I already know I want: • Time-based automatic control that advances the mat precisely every hour. • A low-profile, walk-safe deck suitable for hospital corridors and dusty construction entries alike. • A rigid steel frame for durability, yet light enough to remain truly portable. • Quiet, sealed gear-motor driven by a rechargeable ...

I’m looking for an experienced developer who can build fully emulated firmware for a DMA card. The firmware should be compatible with Windows and capable of emulating several key functionalities, including: 100% CFG The configuration space of the firmware should perfectly replicate that of a legitimate device, allowing it to be detected and recognized by the system as authentic hardware. BAR Support BAR (Base Address Register) represents the memory region inside a PCIe device. The BIOS reads this information in order to properly communicate and interact with the device. Emulation Correct BAR handling ensures that when a driver sends a request to the PCIe device’s BAR, the firmware responds with the appropriate data, effectively imitating the behavior of a real device. Full ...

The original schematics and firmware sources for my existing motherboard are no longer available, yet I still need to keep the product alive and solve a series of recurring hardware failures. The immediate objective is to reverse-engineer the board in detail so I have a complete, accurate picture of how every power rail, I/O interface, and embedded controller is wired and programmed. Once that knowledge is captured, I want a refreshed design that removes today’s failure points and is ready for a short production run. Work starts with non-destructive teardown, high-resolution imaging, net tracing, and firmware dumping via JTAG/SWD or any other proven technique. From there the task moves into schematic recreation (Altium Designer or KiCad preferred), BOM generation with current compon...

Project Overview This project aims to develop a small WiFi gateway that connects to a Danfoss EKC 202C refrigeration controller via Modbus RTU (RS-485) and provides a local web interface. The system should allow monitoring of key controller values and limited control via a browser. The first version is a local-only solution without cloud connectivity, but the architecture must allow future expansion to cloud services. Hardware Assumptions • ESP32 or similar WiFi-enabled microcontroller • RS485 interface module for Modbus RTU communication • Connection to Danfoss EKC 202C controller (via Modbus adapter) Setup Flow • On first boot the device starts its own WiFi Access Point • User connects via smartphone or laptop • User opens configuration page at • Use...

I’m putting together an all-terrain rover that pairs a Raspberry Pi 5 with an Arduino. The Arduino will sit close to the hardware, polling and driving everything from temperature-humidity probes and distance sensors to an IMU (pitch/yaw/roll, altitude, compass), ESC-PWM motor controllers, speed-over-ground tracking and battery-management read-outs. All of that raw data needs to flow up to the Pi, where it is bundled, logged and pushed over a 4 G link. The Pi also runs the user interface on an onboard touchscreen. I want that interface to launch straight into a clean dashboard with drag-and-drop style widgets so I can rearrange or resize gauges, graphs and buttons while in the field. On the software side I need: • Firmware for the Arduino that publishes every sensor value pl...

I want to build a persistence-of-vision LED system that mounts on a standard bicycle wheel and shows crisp, full-color static images whenever the wheel reaches riding speed. The image should appear only at higher RPMs—cruising or sprint speeds—not while I am moving slowly or stopped. Core functionality • An addressable 256 LED spoke mounted strip driven by a small micro-controller (ESP32, Arduino-compatible, or similar) and powered by a lightweight, wheel-mounted battery. • Firmware that stores and renders static bitmaps in correct perspective as the wheel spins, synchronizing via hall-effect or magnet sensor. • A simple phone app that lets the rider pick any image, crop it to a wheel-friendly template, and wirelessly push it to the controller. There is no...

I’m building an automated live-play poker table and need the complete RFID hardware blueprint that will let software read every chip on the felt in real time. The table will hold well over 100 tagged chips at once, and I want reliable High-Frequency (13.56 MHz) reads at a maximum distance of about 10 cm from the antennas under the layout. Your task is purely on the hardware side: define an architecture that can see each chip as stacks move, bets slide, and pots grow, then pass clean data to the software team through a simple API or wired interface of your choice. Key expectations • Robust HF antenna array layout sized for a poker table, including multiplexing strategy to handle >100 simultaneous tags without collisions or dead zones. • Reader, controller, and MCU/FPG...

I need a compact 2-4 channel analog MEMS microphone array built around an XMOS processor. The board must perform real-time beamforming, echo-cancellation and noise-suppression, then expose a clean audio output through straightforward header pins so it can be patched into downstream hardware without fuss. Size matters here: the smaller the PCB, the better. I’m expecting you to handle the full hardware cycle—schematic capture, PCB layout, component selection and a ready-to-order BOM—plus the XMOS firmware that brings the DSP features to life. Your code should compile and run on the free tools from XMOS; please include any scripts or tuning utilities you rely on. Deliverables • Production-ready Gerbers, pick-and-place file, annotated schematic • BOM with supp...

I’m building a small-footprint PCB around the ESP32 that will serve as the core of several IoT devices. The board must expose reliable Wi-Fi, Bluetooth, and flexible sensor headers so it can drop straight into prototypes and low-volume production runs. Here is the scope I have in mind: • Schematic capture for the ESP32 module with stable power-management, antenna clearance, and USB-to-UART programming interface. • PCB layout (2-layer is fine if performance allows) that remains within 50 × 50 mm, ready for standard SMT assembly. • Breakouts or onboard footprints for common environmental sensors; I haven’t finalised the exact parts, so leave room on I²C and a couple of ADC/GPIO lines for temperature, humidity or motion modules. • Production...

I need a custom power supply designed specifically for consumer electronics, with a focus on automation systems. The power supply must output 12V. Key requirements: - Suitable for consumer electronics and automation systems. - 12V output voltage. Ideal skills and experience: - Expertise in power supply design. - Experience with consumer electronics and automation systems. - Knowledge of safety standards and regulations. Please provide your portfolio and relevant experience.

My drone refuses to finish its latest firmware update and is now stuck in an endless restart loop. I need an experienced developer who has already dealt with drone firmware quirks to track down the root cause, flash the correct binaries if necessary, and get the aircraft flying again. The work is strictly troubleshooting: no new features or redesigns—just a clean, stable fix. While the main symptom is a failed firmware load, I’m open to your testing any related areas such as connection hand-shake or crash logs if you suspect they’re part of the problem. Deliverables • Diagnose the exact point where the firmware update fails • Apply or guide me through the corrective procedure (new build, bootloader tweak, or safe-mode flash) • Verify that the dr...