Schematics and PCB for Arduino MKR Carrier / Shield
$750-1500 CAD
Paid on delivery
We require a carrier board / shield for the Arduino MKR boards. Similar to the MKR CONNECTOR CARRIER ([login to view URL]). Low power is key. The board must be able to sleep with minimal power consumption (<5 uA).
We require the schematics and pcb layout and 50 tested and working prototypes.
Power supply:
The carrier will have a low power DC/DC regulator using TPS62740 and work from Li-SIO2 primary batteries.
Support an internal (on board or off board) and an external battery
Use TPS22917 load switch to switch between internal and external battery. If external battery present, disable internal battery.
Batteries are fused and circuit is protected against battery reversal
If voltage present on MKR +5V (ie: Vusb or Vin present) then disable power supply using TPS22917 load switch.
LED:
3 color SMT LED
Sensors:
SHT31 sensor
TMP116 sensor
ADS1115 ADC
I2C Accelerometer/IMU (InvenSense)
Load switch for external sensor power
Extra I2C bus
2 Analog differential amplifiers using LPV821
2 Analog singled ended amplifiers using LPV821
Memory
4 GB EMMC module
Micro SD card slot
SD card should be able to be powered off
Antenna
868/915 MHz antenna on board if Freelancer has skill to design this.
uFL connector
PCB
38.5mm x 63.5mm to fit existing enclosure. Will provide outline.
Antenna likely requires ground plane.
Project ID: #17854790
About the project
1 freelancer is bidding on average $1500 for this job
Hi, I hope you are doing well. I have expertise in embedded system design and development. My expertise are in Arduino based embedded projects. I have reviewed your project details and I understand your requireme More