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High-Precision AD-DA User Manual 

 

 

Revision: 1.2. Date: October 30 2015. Author: Zhou Jie. Editor: Felix 

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High-Precision AD/DA Board 

User Manual 

Overview 

 

There's no AD/DA function on the 

Raspberry Pi GPIO interface, this may 

troubled 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. 

Supported Pi 

 

Raspberry Pi 1 Model A+ 

 

Raspberry Pi 1 Model B+ 

 

Raspberry Pi 2 Model B 

 

 

Features 

 

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 

 

 

Summary of Contents for High-Precision AD/DA Board

Page 1: ...functions to the Raspberry Pi Supported Pi Raspberry Pi 1 Model A Raspberry Pi 1 Model B Raspberry Pi 2 Model B Features Onboard ADS1256 8ch 24bit high precision ADC 4ch differential input 30ksps samp...

Page 2: ...easy to connect various analog sensor modules 4 7 68M crystal 5 LM285 2 5 provides reference voltage for the ADC chip 6 Photo resistor 7 LED output indicator 8 10K potentiometer 9 DAC8532 16bit high...

Page 3: ...can read the voltage output of LDR from the pin AD1 4 LEDA LEDB LED output indicator Tab 7 By connecting the jumper between LEDA LEDB and DAC0 DAC1 the voltage output of DAC0 DAC1 can be estimated ro...

Page 4: ...in used here should be more than 4GB In this operation a TF card reader is also required 4 Plug in the programmed TF card to the TF card socket on a Raspberry Pi and then power up to start the Raspbia...

Page 5: ...erential measurements the common input AINCOM does not need to be tied to ground 3 When using SSH for terminal control please connect the network cable The software PuTTY should be installed See the s...

Page 6: ...n using SSH for terminal control please connect the network cable The software PuTTY should be installed See the section 1 2 4 Power up 5 Copy using a USB drive as a carrier the software directory DAC...

Page 7: ...ower 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 o...

Page 8: ...e October 30 2015 Author Zhou Jie Editor Felix share awesome hardware 4 Revision history Revision Changes Date 1 0 Initial release June 26 2015 1 1 Released English version manual Minor edits July 17...

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