Powdy is an all-in-one power reader via USB-C! Just plug it in to your device, and watch as the power draw reading come onto the OLED screen. This device mostly uses one main component to read the power- The INA226, along with the MCU- the ATmega328P-A.
The whole software is being written in Arduino (yes, I know....), and being flashed to the MCU via a USBtinyISP as a HEX file via SPI, and the 6 pin headers on-board.
| Item Name | Purpose in Project | Source | Item Price (incl. shipping + taxes) | Total Price |
|---|---|---|---|---|
| USB-C | What connects to the device to read the power output | JLC - C165948 | $0.84 | $0.84 |
| OLED | For displaying the reading | Amazon | $7.93 | $7.93 |
| Caps and Resistors x 14 | For everything | JLC | $0.29 | $0.29 |
| 2x03 Pin Header | For programming | Digikey - 61300411121 | $0.34 | $0.34 |
| INA226 | the actual IC to measure the power going through the USB-C port | JLC - C2653835 | $9.3 | $9.3 |
| AMS1117-3.3 | Voltage regulator to 3.3V from 5V for stuff like OLED and some INA226 pins | JLC - C6186 | $0.89 | $0.89 |
| ATmega328P-A | The Main MCU | JLC - C14877 | $11 | $11 |
| Crystal | For the MCU | Digi - ABM3-16.000MHZ-B2-T | $0.9 | $0.9 |
| USBtinyISP | The board to program the MCU via the 6 header pins | Amazon | $1 | $11 |
| Total - $43 Before Tax In Parts | ||||
| Total - $117 After Everything including assembly + pcb + tax and shipping |
