KEYESTUDIO Raspberry Pi PICO IO Shield Pico Breakout Board for Raspberry Pi Pico Development Board

Fast delivery, good product.

Using with Raspberry Pi Pico with Header. Good quality. Perfect Breakout board.

Good development board.I only wish it had a uSD slot or the pinout matched my uSD breakout boards.

This is really well designed for Raspberry Pi Pico. I really like the power input for external power which can be used to drive high current devices such as NeoPixel strips. I also like all pins are clear marked thus much better than a plain breadboard.

I like the fact that each PICO GPIO Pin on the male header has a 3.3v and ground pin right next to it.The GPIOs for key interfaces like the UARTS are also replicated along the bottom edge of the board.The main problem that i see in the design is this: while the GPIO pins are in strict numeric order on the Keystudio breakout, that is not how the PICO module pins are arranged; The PICO has a number of ground pins interspersed with the GPIOs.Why is that a problem? If you are working from a "Fritzing" diagram, the connections are shown in the same position as they appear on the PICO module and the diagrams do not label the signals being connected. So you can not visually duplicate the Fritzing connections on the Keystudio breakout without looking up the GPIO number the connection on the diagram represents. You could argue that the problem is with Fritzing not labelling the connections, but this is a reveiw of the Keystudio breakout. See Appendix A of the "Getting Started with Raspberry PI PICO" PDF for an example Fritzing diagram.Another peculiarity i noticed is this: if the PICO plugged into the breakout board is getting power from USB, the 5v header pins on the breakout are not powered. You must use an external DC source in order to have these 5v pins be live. That is suboptimal if you like to use USB for both power and stdio/serial.And one final thing. No schematic or notes are provided. It would be nice to know the exact details on the onboard power regulators and so on.

I'm new to this, so forgive me if I'm missing some basic understanding.a) The debug port pin connectors do not align even close to the debug pins on the Pico W. Pico W debug pins are near the middle of the Pico board while the Keystone debug pin connector is located at one end of the board. Therefore, you can't use the debug port on the IO Shield.b) No documentationc) Pin labeling for VBUS (Pico pin 40) appears to be labeled as VUSB. I don't know why. The Raspberry Pi Pico datasheet says power can be supplied from either the microUSB port or directly to the VBUS pin:"The simplest way to power Pico W is to plug in the micro-USB, which will power VSYS (and therefore the system) from the 5V USB VBUS voltage, via D1 (so VSYS becomes VBUS minus the Schottky diode drop).If the USB port is the only power source, VSYS and VBUS can be safely shorted together to eliminate the Schottky diode drop (which improves efficiency and reduces ripple on VSYS).If the USB port is not going to be used, it is safe to power Pico W by connecting VSYS to your preferred power source (in the range ~1.8V to 5.5V)."Since there's no documentation on the limitations of the IO Shield, I'm going to assume that the only way to power the Pico using the KEYESTUDIO IO Shield is via the micro-USB port.d) What's the 12v input power connector used for? Oh, no documentation. I don't know. The Pico W provides 3v power from the 5v input power, so not sure what 12v input power is for.I recommend getting something else.

If you're thinking of getting this for use with a debugger, don't bother. The debug pin connection is too convoluted.

The board is well made. Great for testing projects.