Cardputer ADV PalPack PCB Kit

Give your Cardputer a second radio brain and a GPS.

The PalPack is a GPIO and RF expansion board for the Cardputer ADV and Cardputer Zero. Solder on a Seeed XIAO ESP32-C5 and an ATGM336H GPS, hang two antennas off it, and you've got 5 GHz and wardriving in your pocket. It talks to the Cardputer over UART, so no SD card slot is taken up. Three modes to choose from, and if you own a soldering iron you're good to go.

What's in the kit

• 1x bare PalPack PCB
• 1x backpack converter

That's it — this is the DIY kit. Headers, XIAO, GPS, SMA and U.FL are not included. You're buying the boards, not a finished device.

Parts you'll need to finish it

• 1x Seeed Studio XIAO ESP32-C5
• 1x ATGM336H GPS module
• 1x AMS1117 3.3 V regulator
• 2x 10 uF 0805 capacitor
• 1x 100 nF 0805 capacitor
• 2x U.FL connectors
• 2x SMA or RP-SMA connectors
• IPEX to IPEX jumpers
• 2.54 mm headers to taste

Build guide

Full assembly video is on my YouTube channel @valleytechsolutions, and the BOM plus fabrication files are up on GitHub.

I love your face.
-Your Pal Kal

Play nice

This is a learning and authorized-testing tool. Only touch networks and devices you own or have written permission to test, and follow your local radio rules.