An Open Source DAQ module for Raspberry Pi Pico
PlainDAQ is a simple, yet useful DAQ module for your Raspberry Pi Pico. It's got 4 analog inputs, a single analog output channel. It can also output ±5V to power external curcuitry that needs symetrical power supply. It optionally includes a simple UART-to-BLE module for wireless connectivity.
Short List of features:
Analog Inputs:
• 4 Channels (multiplexed)
• 12-bit resolution, 72dB SNR (11.6 ENOB,4000:1 dynamic range)
• 500 kS/s sampling rate.
• ±0.5V, ±1V, ±2V, ±4V bipolar ranges.
• Auto-off calibration.
Analog Output:
• 10-bit resolution.
• 50 kS/s sampling rate.
• ±4V bipolar range.
Voltage Reference:
• 2.5V, 20ppm/°C (Typical) Drift
• Calibrate to 0.05%, Stored in as ROM as calibration data.
Bipolar Voltage Supply:
• ±5V power output.
• ±100mA current rating.
BLE Module:
• RAYTAC MDBT42T-AT
• Bluetooth v5.1
• Simple UART interface to Raspberry Pico
Some preliminary pics of the 2D and 3D model of PlainDAQ:
Here is a hand assembled PlainDAQ, doesn't it look pretty? 😀
