- place the Raspberry Pi Pico on the silk screen on the front
- you don't need to solder all the PINs. Just the following:
- D4 and D5 (left side)
- GND (right side)
- 3v3_OUT (right side)
- the 3 DEBUG pin on the bottom: SWCLK, GND and SWDIO
- place the 3D printer spacer or a piece of tape on the parts of the OLED that my touch the Raspberry
- solder the OLED (with a header) on the 4 PIN space
Some of the OLEDs have the GND and VCC PINs swapped, so I built the PCB to be compatible with both versions:
For example if your OLED has GND on PIN1 and VCC on PIN2 like this:
You have to place a blob of solder on these two pads on the back of the PCB:
Otherwise you should the opposite and place the solder on the other PADs:
If you are using a breadboard or just wiring, all you have to do is to ensure to connect the proper PINs at the OLED screen.
The mapping is the following:
- PIN6 of Pi --> OLED SDA
- PIN7 of Pi --> OLED SCL
- PIN38 (GND) of Pi --> OLED GND
- PIN36 (3V3OUT) of Pi --> OLED VCC
If you want to use the DEBUG functions, you can also place a header on the 3 SWD PINs at the bottom of the board.
To flash the firmware, follow these steps:
- Connect the Raspberry Pi Pico with the USB cable, by keeping the BOOTSEL button pressed (the big white button on the board)
- release the button
- you will see a new drive on the system, named
RPI-RP2(in Linux envs you may have to manually mount it) - copy the proper firmware file (with extension
uf2) in the folder, depending on the OLED you used - wait few seconds until the mounted folder disappear
It's done!