![]() It will then reboot with the updated firmware. When it appears, drag the UF2 file from your Downloads folder onto Pico. Press and hold Pico’s BOOTSEL button while plugging it into a USB port on your computer (Raspberry Pi, PC, or Mac). Point your browser at /pimoronipicoreleases and download the most recent UF2 (.uf2) file – examples for use are at /pimoronipicogit. Instead, you need Pimoroni’s custom MicroPython firmware image. Your Pico contains a web link to Raspberry Pi’s own firmware, but this doesn’t include the additional hooks required to work with the Unicorn Pack. Be firm but gentle and try to keep equal pressure on either end to reduce the risk of bending any pins on either of the headers. Line up this illustration with the actual USB socket, then press the Unicorn Pack onto the header pins on Pico. Now check the back of the Unicorn Pack, where you’ll see there’s a white painted illustration of Pico’s USB socket. When the solder has had time to cool, turn over Pico so that the longer end of each pin is pointing up and the USB socket is underneath. Don’t allow solder to stray across adjacent strips or pins, or you’ll create a short circuit. ![]() ![]() With the USB socket uppermost, fit Pico over the shorter pins on either header and use a small amount of solder on each one to create a contact with the corresponding metal strip on Pico. We want to attach Pico to a hardware array of LEDs – but, as Pico lacks the GPIO header of a regular Raspberry Pi, we’ll first need to solder a header to the long row of holes on either side of Pico itself. But pairing a Raspberry Pi Pico with the bright LEDs of a Unicorn Pack means you can see at a glance when your next break is approaching and, if you keep it just out of your eyeline, that warm red glow is a reminder to carry on working. ![]()
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