This is a branch out of the Open source [PlasticScanner project](https://github.com/Plastic-Scanner "PlasticScanner), and all work in this repo is for a project for the course Advanced embodiment design at TU Delft, Spring 2022.
This firmware is ment to be used with the custom PCB for a handheld version of the PlasticScanner - the whole KiCad project is placed under "Hardware".
The firmware is coded for an ESP32-DevkitC-v4 module (Link to Mouser). Other DevBoards might work aswell - but it has not been tested. Be aware of the ESP32 being in use is the Generation 1, and not the S2 or S3 verion!
Open the whole folder in PlatformIO, and make sure that all dependencies described in platformio.ini are pulled.
The system runs on 5v from the ESP32 or Arduino Uno
SPI is used for the screen and the ADC (ADS1256)
| ESP32 | PCB 2.1 | Description | |
|---|---|---|---|
| COPI | 23 | MOSI | Controller out, Pheripial in |
| CIPO | 19 | MISO | Controller in, Pheripial out |
| SCK | 18 | CLK | Clock syncronisation |
| CS | 5 | CS | Chip select |
| PDWN | 14 | PDWN | Power down |
| Reset | 27 | Reset | Reset |
| DRDY | 26 | DRDY | Data Ready |
OBS! there are jumper solders on the ESP to choose if the screen should use the H-SPI or V-SPI CLK and MOSI on the ESP32.
I2C is used for controlling the 8 specific wavelength NIR LED's
| ESP32 | PCB 2.1 | Description | |
|---|---|---|---|
| GND | GND | GND | Ground |
| SDA | 21 | SDA | Serial Data connection |
| SCL | 22 | SCL | Serial clock |
| Reset | Nan | Reset | Reset |
the trigger is used for - Well you guessed is - Triggering the scanner
| ESP32 | PCB 2.1 | Description | |
|---|---|---|---|
| Trigger | 33 | D2 | Trigger button (reset on 2.1) |
- SPI communication with ADS1256 is currently not working.
- BLE notify is currently not broadcasting new values correctly
- Make a simpler screen integration than TFT eSPI with user setup No. 46
- Try another ADS1256 library