video: https://drive.google.com/file/d/1Z4dQG3ToT1yv5ojDU8G2fUsDlY2Y1bl4/view?usp=sharing

Firmware designed for the pico of the IDC project

Building:

1. create your build directory mkdir build
2. run cmake -DPICO_BOARD=pico_w -DWIFI_SSID='SSID' -DWIFI_PASSWORD='PASS' ..

You must set your Wi-Fi SSID in 'SSID' and your Wi-Fi password in 'PASS'

3. run make inside your build directory

Flashing

With picotool:

1. build picotool
2. run picotool load -f PicoMeasure.uf2

Without picotool

move PicoMeasure.uf2 to the pico in BOOTSEL mode

See USB output

sudo minicom -b 115200 -o -D /dev/ttyACM0

Circuits

DHT22

KY-038

MQ-135

TROUBLESHOOTING

Both KY-038 and MQ-135 sensors have a high voltage of 5V, meanwhile the pico only has 3.3V. For the proper functioning of the circuit, you'll have to use either a level shifter or a voltage divider. The pico does have a 5V output pin, so you can use that as a source.