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$50 USD / hour
Flag of FINLAND
helsinki, finland
$50 USD / hour
It's currently 8:21 AM here
Joined March 26, 2015
1 Recommendation

Vladimir K.

@UnDerKetzer

 5.0 (5 reviews)
5.0
5.0
100%
100%
$50 USD / hour
Flag of FINLAND
helsinki, finland
$50 USD / hour
100%
Jobs Completed
100%
On Budget
100%
On Time
20%
Repeat Hire Rate

Electronic engineer and software developer

Experienced Electronics Engineer, 13+ years hands-in practice New space, automotive, power and hi-rel electronics. • 13+ years of experience of full cycle development of electronic devices and complex systems from scratch to implementation and series production • 10+ years of experience with Altium Designer, 2 years of experience with PADS Professional • 10+ years of organizing manufacturing and business processes with fabs and suppliers, mostly in Asia and Europe • Experience with high-speed digital electronics: FPGAs, MCUs, DDR3/DDR4, 10G Ethernet • Experience with high-speed interfaces: USB 3.0, Ethernet GMII/RGMII, LVDS, QDRII+ • Experience with low-speed interfaces: I2C, SPI, CAN, RS422, RS485, etc • Experience with designing analog circuits: high-speed ADC/DAC, high precision/low noise, ultra-low power design. • Experience with power systems and circuits (<1kW): SMPS, Solar, Large Li-Ion batteries, Motor Control, BMS and power subsystems for aerospace applications • Expertise on Li-Ion cells and batteries for hi-rel applications • Waste experience with small- and mid-volume production, potential problems and design techniques (DFM, DFT and DFSc) • Waste experience with lab equipment: advanced oscilloscopes/generators, spectrum analyzers, VNAs, hands-in experience with SCPI over Ethernet protocol, soldering and prototyping • Experience in EOL testing and Hardware-in-the-loop (HIL) simulation techniques • High quality SCH/PCB library creation and maintenance • Schematic capture: hierarchical design, multi-board design in Altium Designer • PCB design: Rigid-Flex PCBs, HDI PCBs, EMI/EMC, SI/PI, PDN, conformal coating, potting, testing, etc.
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Portfolio

4852357
"LEDLighter_V1" is a 60x70x40mm three channel LED driver, can be used for any kind of LEDs up to 200W per channel. Operates from 12V-48V voltage source. Contains two RS-422 channels, NFC and IR receivers which can be used to configure it distantly, also has a self-test circuit based on photodiode and safety circuits, which disconnect load in case of overvoltage, overcurrent or overtemperature condition. Carries the regular RJ-45 connectors to be to a network of lighters.
LEDLighter_V1
"LEDLighter_V1" is a 60x70x40mm three channel LED driver, can be used for any kind of LEDs up to 200W per channel. Operates from 12V-48V voltage source. Contains two RS-422 channels, NFC and IR receivers which can be used to configure it distantly, also has a self-test circuit based on photodiode and safety circuits, which disconnect load in case of overvoltage, overcurrent or overtemperature condition. Carries the regular RJ-45 connectors to be to a network of lighters.
LEDLighter_V1
"LEDLighter_V1" is a 60x70x40mm three channel LED driver, can be used for any kind of LEDs up to 200W per channel. Operates from 12V-48V voltage source. Contains two RS-422 channels, NFC and IR receivers which can be used to configure it distantly, also has a self-test circuit based on photodiode and safety circuits, which disconnect load in case of overvoltage, overcurrent or overtemperature condition. Carries the regular RJ-45 connectors to be to a network of lighters.
LEDLighter_V1
4773211
"EWallet" is a 62x70x7mm hardware wallet. Contains 2.8" 320x240 TFT LCD display with touch screen, USB 3.0 connector, two tactile buttons and Crypto Element with protected hardware-based key storage (SHA-256 hash algorithm + Message Authentication Code).
EWallet
"EWallet" is a 62x70x7mm hardware wallet. Contains 2.8" 320x240 TFT LCD display with touch screen, USB 3.0 connector, two tactile buttons and Crypto Element with protected hardware-based key storage (SHA-256 hash algorithm + Message Authentication Code).
EWallet
"EWallet" is a 62x70x7mm hardware wallet. Contains 2.8" 320x240 TFT LCD display with touch screen, USB 3.0 connector, two tactile buttons and Crypto Element with protected hardware-based key storage (SHA-256 hash algorithm + Message Authentication Code).
EWallet
"EWallet" is a 62x70x7mm hardware wallet. Contains 2.8" 320x240 TFT LCD display with touch screen, USB 3.0 connector, two tactile buttons and Crypto Element with protected hardware-based key storage (SHA-256 hash algorithm + Message Authentication Code).
EWallet
"EWallet" is a 62x70x7mm hardware wallet. Contains 2.8" 320x240 TFT LCD display with touch screen, USB 3.0 connector, two tactile buttons and Crypto Element with protected hardware-based key storage (SHA-256 hash algorithm + Message Authentication Code).
EWallet
"EWallet" is a 62x70x7mm hardware wallet. Contains 2.8" 320x240 TFT LCD display with touch screen, USB 3.0 connector, two tactile buttons and Crypto Element with protected hardware-based key storage (SHA-256 hash algorithm + Message Authentication Code).
EWallet
4773202
"LEDLighter_V1" is a 60x70x40mm three channel LED driver, can be used for any kind of LEDs up to 200W per channel.
LEDLighter
"LEDLighter_V1" is a 60x70x40mm three channel LED driver, can be used for any kind of LEDs up to 200W per channel.
LEDLighter
"LEDLighter_V1" is a 60x70x40mm three channel LED driver, can be used for any kind of LEDs up to 200W per channel.
LEDLighter
"LEDLighter_V1" is a 60x70x40mm three channel LED driver, can be used for any kind of LEDs up to 200W per channel.
LEDLighter
"LEDLighter_V1" is a 60x70x40mm three channel LED driver, can be used for any kind of LEDs up to 200W per channel.
LEDLighter
"LEDLighter_V1" is a 60x70x40mm three channel LED driver, can be used for any kind of LEDs up to 200W per channel.
LEDLighter
"LEDLighter_V1" is a 60x70x40mm three channel LED driver, can be used for any kind of LEDs up to 200W per channel.
LEDLighter
"LEDLighter_V1" is a 60x70x40mm three channel LED driver, can be used for any kind of LEDs up to 200W per channel.
LEDLighter
3177571
"LC-80 power measurer" — power regulator for luminaries in 220V line with several interfaces (PLC + DALI or 1..10V + RS485 or DMX512). It able to measure line voltage frequency, Vrms, Vp-p, Irms, Ip-p, Power Factor, active and reactive power and send all the information via PLC interface. DALI/DMX512/1..10V interfaces are used for dimming and RS-485 is for communication with other devices. Relay is used to switch on/off up to 500W load.
LC-80 power measurer
"LC-80 power measurer" — power regulator for luminaries in 220V line with several interfaces (PLC + DALI or 1..10V + RS485 or DMX512). It able to measure line voltage frequency, Vrms, Vp-p, Irms, Ip-p, Power Factor, active and reactive power and send all the information via PLC interface. DALI/DMX512/1..10V interfaces are used for dimming and RS-485 is for communication with other devices. Relay is used to switch on/off up to 500W load.
LC-80 power measurer
"LC-80 power measurer" — power regulator for luminaries in 220V line with several interfaces (PLC + DALI or 1..10V + RS485 or DMX512). It able to measure line voltage frequency, Vrms, Vp-p, Irms, Ip-p, Power Factor, active and reactive power and send all the information via PLC interface. DALI/DMX512/1..10V interfaces are used for dimming and RS-485 is for communication with other devices. Relay is used to switch on/off up to 500W load.
LC-80 power measurer
"LC-80 power measurer" — power regulator for luminaries in 220V line with several interfaces (PLC + DALI or 1..10V + RS485 or DMX512). It able to measure line voltage frequency, Vrms, Vp-p, Irms, Ip-p, Power Factor, active and reactive power and send all the information via PLC interface. DALI/DMX512/1..10V interfaces are used for dimming and RS-485 is for communication with other devices. Relay is used to switch on/off up to 500W load.
LC-80 power measurer
3177565
It is just a simple converter for debug. It includes ATMega8 MCU, RS-485 interface, UART interface and 868MHz raw RF interface. Also, additional functions like PWM or I2C interface are presented.
USB/RS-485/UART/RF converter
It is just a simple converter for debug. It includes ATMega8 MCU, RS-485 interface, UART interface and 868MHz raw RF interface. Also, additional functions like PWM or I2C interface are presented.
USB/RS-485/UART/RF converter
It is just a simple converter for debug. It includes ATMega8 MCU, RS-485 interface, UART interface and 868MHz raw RF interface. Also, additional functions like PWM or I2C interface are presented.
USB/RS-485/UART/RF converter
It is just a simple converter for debug. It includes ATMega8 MCU, RS-485 interface, UART interface and 868MHz raw RF interface. Also, additional functions like PWM or I2C interface are presented.
USB/RS-485/UART/RF converter
3177564
The "Flowmeter" is a device for diesel generator's consumption measuring with auxiliary control outputs. It calculate fuel consumption (2 complimented or 4 independent input channels), display data and send via isolated RS-485 interface. Also, additional analog channels provide ability to measure one differential analog signal (0V..10V) or two single-ended signals (0V..10V).
Flowmeter
The "Flowmeter" is a device for diesel generator's consumption measuring with auxiliary control outputs. It calculate fuel consumption (2 complimented or 4 independent input channels), display data and send via isolated RS-485 interface. Also, additional analog channels provide ability to measure one differential analog signal (0V..10V) or two single-ended signals (0V..10V).
Flowmeter
4852357
"LEDLighter_V1" is a 60x70x40mm three channel LED driver, can be used for any kind of LEDs up to 200W per channel. Operates from 12V-48V voltage source. Contains two RS-422 channels, NFC and IR receivers which can be used to configure it distantly, also has a self-test circuit based on photodiode and safety circuits, which disconnect load in case of overvoltage, overcurrent or overtemperature condition. Carries the regular RJ-45 connectors to be to a network of lighters.
LEDLighter_V1
"LEDLighter_V1" is a 60x70x40mm three channel LED driver, can be used for any kind of LEDs up to 200W per channel. Operates from 12V-48V voltage source. Contains two RS-422 channels, NFC and IR receivers which can be used to configure it distantly, also has a self-test circuit based on photodiode and safety circuits, which disconnect load in case of overvoltage, overcurrent or overtemperature condition. Carries the regular RJ-45 connectors to be to a network of lighters.
LEDLighter_V1
"LEDLighter_V1" is a 60x70x40mm three channel LED driver, can be used for any kind of LEDs up to 200W per channel. Operates from 12V-48V voltage source. Contains two RS-422 channels, NFC and IR receivers which can be used to configure it distantly, also has a self-test circuit based on photodiode and safety circuits, which disconnect load in case of overvoltage, overcurrent or overtemperature condition. Carries the regular RJ-45 connectors to be to a network of lighters.
LEDLighter_V1
4773211
"EWallet" is a 62x70x7mm hardware wallet. Contains 2.8" 320x240 TFT LCD display with touch screen, USB 3.0 connector, two tactile buttons and Crypto Element with protected hardware-based key storage (SHA-256 hash algorithm + Message Authentication Code).
EWallet
"EWallet" is a 62x70x7mm hardware wallet. Contains 2.8" 320x240 TFT LCD display with touch screen, USB 3.0 connector, two tactile buttons and Crypto Element with protected hardware-based key storage (SHA-256 hash algorithm + Message Authentication Code).
EWallet
"EWallet" is a 62x70x7mm hardware wallet. Contains 2.8" 320x240 TFT LCD display with touch screen, USB 3.0 connector, two tactile buttons and Crypto Element with protected hardware-based key storage (SHA-256 hash algorithm + Message Authentication Code).
EWallet
"EWallet" is a 62x70x7mm hardware wallet. Contains 2.8" 320x240 TFT LCD display with touch screen, USB 3.0 connector, two tactile buttons and Crypto Element with protected hardware-based key storage (SHA-256 hash algorithm + Message Authentication Code).
EWallet
"EWallet" is a 62x70x7mm hardware wallet. Contains 2.8" 320x240 TFT LCD display with touch screen, USB 3.0 connector, two tactile buttons and Crypto Element with protected hardware-based key storage (SHA-256 hash algorithm + Message Authentication Code).
EWallet
"EWallet" is a 62x70x7mm hardware wallet. Contains 2.8" 320x240 TFT LCD display with touch screen, USB 3.0 connector, two tactile buttons and Crypto Element with protected hardware-based key storage (SHA-256 hash algorithm + Message Authentication Code).
EWallet
4773202
"LEDLighter_V1" is a 60x70x40mm three channel LED driver, can be used for any kind of LEDs up to 200W per channel.
LEDLighter
"LEDLighter_V1" is a 60x70x40mm three channel LED driver, can be used for any kind of LEDs up to 200W per channel.
LEDLighter
"LEDLighter_V1" is a 60x70x40mm three channel LED driver, can be used for any kind of LEDs up to 200W per channel.
LEDLighter
"LEDLighter_V1" is a 60x70x40mm three channel LED driver, can be used for any kind of LEDs up to 200W per channel.
LEDLighter
"LEDLighter_V1" is a 60x70x40mm three channel LED driver, can be used for any kind of LEDs up to 200W per channel.
LEDLighter
"LEDLighter_V1" is a 60x70x40mm three channel LED driver, can be used for any kind of LEDs up to 200W per channel.
LEDLighter
"LEDLighter_V1" is a 60x70x40mm three channel LED driver, can be used for any kind of LEDs up to 200W per channel.
LEDLighter
"LEDLighter_V1" is a 60x70x40mm three channel LED driver, can be used for any kind of LEDs up to 200W per channel.
LEDLighter
3177571
"LC-80 power measurer" — power regulator for luminaries in 220V line with several interfaces (PLC + DALI or 1..10V + RS485 or DMX512). It able to measure line voltage frequency, Vrms, Vp-p, Irms, Ip-p, Power Factor, active and reactive power and send all the information via PLC interface. DALI/DMX512/1..10V interfaces are used for dimming and RS-485 is for communication with other devices. Relay is used to switch on/off up to 500W load.
LC-80 power measurer
"LC-80 power measurer" — power regulator for luminaries in 220V line with several interfaces (PLC + DALI or 1..10V + RS485 or DMX512). It able to measure line voltage frequency, Vrms, Vp-p, Irms, Ip-p, Power Factor, active and reactive power and send all the information via PLC interface. DALI/DMX512/1..10V interfaces are used for dimming and RS-485 is for communication with other devices. Relay is used to switch on/off up to 500W load.
LC-80 power measurer
"LC-80 power measurer" — power regulator for luminaries in 220V line with several interfaces (PLC + DALI or 1..10V + RS485 or DMX512). It able to measure line voltage frequency, Vrms, Vp-p, Irms, Ip-p, Power Factor, active and reactive power and send all the information via PLC interface. DALI/DMX512/1..10V interfaces are used for dimming and RS-485 is for communication with other devices. Relay is used to switch on/off up to 500W load.
LC-80 power measurer
"LC-80 power measurer" — power regulator for luminaries in 220V line with several interfaces (PLC + DALI or 1..10V + RS485 or DMX512). It able to measure line voltage frequency, Vrms, Vp-p, Irms, Ip-p, Power Factor, active and reactive power and send all the information via PLC interface. DALI/DMX512/1..10V interfaces are used for dimming and RS-485 is for communication with other devices. Relay is used to switch on/off up to 500W load.
LC-80 power measurer
3177565
It is just a simple converter for debug. It includes ATMega8 MCU, RS-485 interface, UART interface and 868MHz raw RF interface. Also, additional functions like PWM or I2C interface are presented.
USB/RS-485/UART/RF converter
It is just a simple converter for debug. It includes ATMega8 MCU, RS-485 interface, UART interface and 868MHz raw RF interface. Also, additional functions like PWM or I2C interface are presented.
USB/RS-485/UART/RF converter
It is just a simple converter for debug. It includes ATMega8 MCU, RS-485 interface, UART interface and 868MHz raw RF interface. Also, additional functions like PWM or I2C interface are presented.
USB/RS-485/UART/RF converter
It is just a simple converter for debug. It includes ATMega8 MCU, RS-485 interface, UART interface and 868MHz raw RF interface. Also, additional functions like PWM or I2C interface are presented.
USB/RS-485/UART/RF converter
3177564
The "Flowmeter" is a device for diesel generator's consumption measuring with auxiliary control outputs. It calculate fuel consumption (2 complimented or 4 independent input channels), display data and send via isolated RS-485 interface. Also, additional analog channels provide ability to measure one differential analog signal (0V..10V) or two single-ended signals (0V..10V).
Flowmeter
The "Flowmeter" is a device for diesel generator's consumption measuring with auxiliary control outputs. It calculate fuel consumption (2 complimented or 4 independent input channels), display data and send via isolated RS-485 interface. Also, additional analog channels provide ability to measure one differential analog signal (0V..10V) or two single-ended signals (0V..10V).
Flowmeter

Reviews

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Showing 1 - 5 out of 5 reviews
Filter reviews by:
5.0
$35.00 USD
private project
Vladimir made an excellent work again. Very easy to work with. I highly recommend him.
PCB Layout
User Avatar
Flag of Salvador C.
@SalvadorCoss
•
7 years ago
5.0
$35.00 USD
very simple PCB layout
Vladimir is a great professional. He improved my design and gave me tips and help with everything. I will work with him for sure in my next PCB design.
PCB Layout
User Avatar
Flag of Salvador C.
@SalvadorCoss
•
7 years ago
4.2
€34.00 EUR
Solve electronic noise issue on robot
Vladimir did a great job, we had a very difficult problem which we still haven't solved however we are getting closer to a possible solution and Vladimir is continuing to help us. We would defiantly hire him again for future projects that we have.
Electrical Engineering
M
Flag of Machiel B.
@mbruinink
•
7 years ago
5.0
$1,066.00 USD
Simple Energy Metering Schematic and software
Great freelancer. Very communicative and competent. Will hire again.
C Programming
Microcontroller
Electrical Engineering
User Avatar
Flag of Anders B.
@naronic
•
8 years ago
5.0
$2,127.00 USD
Additional feature to simple energy meter device
Great designer! Will hire again.
Verilog / VHDL
Microcontroller
PCB Layout
Robotics
+1 more
C
Flag of Liang L.
@capelon
•
9 years ago

Education

Master’s degree

Altajskij Gosudarstvennyj Tehniceskij Universitet, Russian Federation 2005 - 2010
(5 years)

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Top Skills

PCB Layout 3
Microcontroller 2
Electrical Engineering 2
Verilog / VHDL 1
Robotics 1

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