Develop a PCB with the following components:
Microcontroller: STM32WB
Temperature & Humidity Sensor: SHTW2
Add 3 LEDs to any preferable IO pins
Add 1 button to any preferable IO pin.
Board will be powered by a 3.7V lithium battery(18650), so add a connector for the battery.
A USB Port to plugin and run code.
Your design has to be minimalistic and very power efficient.
Layer size: 2 layers
Board size: 30mm x 30mm
Bonus:
Add a way for being able to hard wire the board to 120V wall plug
Question:
How long do you estimate the board to last only on 3000mAh 3.7V batteries if the board wakes up every 30 minutes for 2 seconds to send temperature and humidity data through bluetooth and then go back to sleep?
Your deliverable includes:
PDF of schematics and PCB layout
BOM
Any notes and answers to the above question
About the recuiterMember since May 20, 2018 Bajrang Sharma
from Kayes, Mali