The PicoProbe Sled is a simple adaptor with protection resistors used to debug a Raspberry Pi Pico/RP2040 microcontroller using OpenOCD.

On the top side of the board there are two 3-pin connectors - "SWD" to debug the ARM core and "UART" for a serial connection you can connect to the target device.

On the underside of the board there's a 9-pin 0.1" header which replicates the SWD and UART interfaces and adds both 5V and 3.3V power. The SWD/UART pins on the 9-pin connector can be used with regular Dupont style 0.1" pitch cables and a breadboard for example.

The GPIO pins are 3.3V only but the 5V output could be used to power a Pico you're debugging for example.

If soldering your own Raspberry Pi Pico onto the Kit you will need to upload the picoprobe firmware ( debugprobe_on_pico.uf2 ) which can be downloaded from Github. The Fully Assembled version comes with firmware installed but you may also want to check for updates.

Documentation for downloading openocd and using the PicoProbe firmware can be found in the official Pico Getting Started Guide Appendix A: Using Picoprobe section.

The GPIO pins of the onboard Pico are connected as below.

Please Note

• The PiProbe is used to debug a Pico from a Raspberry Pi directly. As described in section 8.1. Debugging your project of Pico Getting Started Guide.
• The PicoProbe Sled to used to debug another Pico from a computer (Windows/MacOX/Linux) using the PicoProbe Sled as a debug tool providing the SWD and UART interfaces. As described in section Appendix A: Using Picoprobe of Pico Getting Started Guide
• Connecting the SWD connectors on the PiProbe and PicoProbe Sled together will not allow you to debug the Pico on the PicoProbe Sled.

Options

The PicoProbe Sled is available in two different models. Fully Assembled with a Raspberry Pi Pico soldered onto the board. Kit ready for you to solder your own Raspberry Pi Pico (not supplied) and 9-pin connector (supplied) onto the Sled. The 3-pin connectors and resistor are already soldered to the PCB.

UART/SWD Cables are not included - see the 3-pin SH Cables product where you can order the lengths as required.

There's also the option to add a short (~15cm) USB cable (micro USB to Type-A plug).