Raspberry Pi High Precision AD/DA Converter Board
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Through this board, you can add 24-bit resolution 8 channel ADC(analog-digital converter) and 16-bit resolution 2 channel DAC(digital-analog converter) to your Raspberry Pi. This shield can be used smoothly with all models of Raspberry Pi, which have 40 pin connector(A+, B+, Pi 2, Pi Zero and Pi3).
1-Raspberry Pi GPIO connection interface
2-AD/DA ,nput/output clip connections
3-AD input: Comptaible with Waveshare sensors
4-7.68M crystal
5-LM285-2.5: Ensures reference voltage for ADC IC
6-LDR (photoresistor)
7-Output state LED's
8-10k potantiometer
9-DAC8532: 16-bit 2 channel DAC IC
10-Power state indicator LED
11-ADS1256: 24-bit 8 channel (4 differential) ADC IC
12-ADC test jumpers
13-DAC test jumpers
14-Power selection jumpers
15-ADC reference connection: Can be connected to GND or an external reference voltage.
Pin Connections:
Pin Symbol Description 1, 17 3.3V Power supply (3.3V) 2, 4 5V Power supply (5V) 3, 5, 7, 8, 10, 18, 22, 24, 26, 27, 28, 29, 32, 36, 38, 40 NC NC 6, 9, 14, 20, 25, 30, 34, 39 GND Ground 11 DRDY ADS1256 data ready output, low active 12 RESET ADS1256 reset input 13 PDWN ADS1256 sync/power off input, low active 15 CS0 ADS1256 chip select, low active 16 CS1 DAC8532 chip select, low active 19 DIN SPI data input 21 DOUT SPI data output 23 SCK SPI clock 31, 33, 35, 37 GPIO extend to sensor interface
Dimensions:
You can visit wiki page for detailed document and example codes.
