Raspberry Pi High-Precision AD/DA Expansion Board

Description Show Reviews Waveshare11010 -Raspberry Pi AD/DA Expansion There’s no AD/DA function on the Raspberry Pi GPIO interface, this may trouble you in the Pi development. However, it won’t be a problem anymore. The High-Precision AD/DA Board allows you to add high-precision AD/DA functions to the Raspberry Pi. FEATURES Standard Raspberry Pi 40PIN GPIO extension header, supports Raspberry Pi series boards, Jetson Nano Onboard ADS1256, 8ch 24bit high-precision ADC (4ch differential input), 30ksps sampling rate Onboard DAC8532, 2ch 16bit high-precision DAC Onboard input interface via pinheaders, for connecting analog signal the pinout is compatible with Waveshare sensor interface standard, easy to connect various analog sensor modules Onboard input/output interface via screw terminals, for connecting analog/digital signal Features AD/DA detect circuit, easy for signal demonstration What’s on Board Raspberry Pi GPIO interface : for connecting with the Pi AD/DA input/output : screw terminals AD input : pinheaders, the pinout is compatible with Waveshare sensor interface standard, easy to connect various analog sensor modules 7.68M crystal LM285-2.5 : provides reference voltage for the ADC chip Photo resistor LED output indicator 10K potentiometer DAC8532 : 16bit high-precision DAC, 2ch Power indicator ADS1256 : 24bit high-precision ADC, 8ch (4ch differential input) ADC testing jumper DAC testing jumper Power selection jumper ADC reference ground configuration : when AD single inputted, the AINCOM is reference terminal, can be connected to GND or external reference voltage Interface Definition 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 Photos High-Precision AD/DA Board back view Connecting with RPi A+ Connecting with RPi2 B Connecting with sensors Note : the Raspberry Pi and sensors in the photo are NOT included. Dimension Development Resources Wiki : www.waveshare.com/wiki/High-Precision_AD/DA_Board 0 Reviews Hide Reviews Show Reviews