Pre-Assembled Adafruit PiCowbell Adalogger for Pico
19 units available with a short lead time.
The Adafruit PiCowbell Adalogger is a data logging add-on board designed to socket underneath a Raspberry Pi Pico or Pico W. It provides a microSD card slot, a PCF8523 real-time clock with battery backup, and a STEMMA QT / Qwiic connector — everything you need for timestamped data logging projects. This version comes with 20-pin stacking headers pre-soldered.
The board matches the Pico's footprint and connects via SPI for the SD card and I2C for the RTC and Qwiic sensors. It works with the Arduino Philhower core, CircuitPython, and MicroPython.
Key Features
- MicroSD Card Slot – SPI-connected storage (pins 16, 17, 18, 19) with optional card detect on pin 15
- PCF8523 Real-Time Clock – I2C RTC with CR1220 coin cell battery backup for accurate timestamps
- STEMMA QT / Qwiic Connector – Right-angle JST SH for quick I2C sensor connection (IO4 SDA, IO5 SCL)
- Pre-Soldered Stacking Headers – Ready to plug in, no soldering required
- Reset Button – Quick program restart
- Pico-Sized Footprint – Sockets neatly underneath the Pico
- Solder-Jumper Pads – Duplicate hole pads for easy configuration
- Gold-Plated Pads – For easy soldering if customisation is needed
Ideal For
- Environmental data logging with timestamps
- Sensor data recording to SD card
- Adding storage and timekeeping to Pico projects
- Quick I2C sensor integration via STEMMA QT / Qwiic
Package Contents
- 1× PiCowbell Adalogger (pre-assembled with stacking headers)
The Pre-Assembled Adafruit PiCowbell Adalogger for Pico appears in the following collections:
