https://wiki.jw-tech.eu/index.php?action=history&feed=atom&title=WSAL11010_%E2%80%93_High-Precision_AD_%E2%80%93_DA_Board%2FenWSAL11010 – High-Precision AD – DA Board/en - Versionsgeschichte2026-10-23T22:04:22ZVersionsgeschichte dieser Seite in JW Tech WikiMediaWiki 1.43.9https://wiki.jw-tech.eu/index.php?title=WSAL11010_%E2%80%93_High-Precision_AD_%E2%80%93_DA_Board/en&diff=1228&oldid=prevJWTechPublisher: Freigegebene technische Dokumentation veröffentlicht; Text-only und noindex2026-09-05T22:25:36Z<p>Freigegebene technische Dokumentation veröffentlicht; Text-only und noindex</p>
<p><b>Neue Seite</b></p><div>__NOINDEX__<br />
'''Documentation notice:''' This technical documentation was independently rewritten from an archived supplier source. Check technical details and commands against the product version and manufacturer documentation before use.<br />
<br />
== Summary ==<br />
The board adds high-precision analog-digital and digital-analog conversion to Raspberry Pi and Jetson Nano over SPI.<br />
<br />
== Related products at JW Tech ==<br />
* [https://shop.jw-tech.eu/p/WSAL11010 WSAL11010 – Raspberry Pi High-Precision AD/DA Expansion Board]<br />
<br />
== Technical overview ==<br />
* Uses the 24-bit, 8-channel ADC ADS1256 with a 30 kS/s sampling rate and four differential inputs.<br />
* Includes the 16-bit, 2-channel DAC DAC8552 for output conversion.<br />
* The pinout follows the Waveshare sensor interface standard, allowing connection of various analog sensor modules.<br />
* Terminal blocks consolidate input and output interfaces for analog and digital signals.<br />
* An onboard AD/DA test circuit simplifies signal demonstration.<br />
* For Raspberry Pi, enable the SPI interface via raspi-config under Interfacing Options.<br />
* Ready-made demo projects are provided in C, Python 2, Python 3, and WiringPi.<br />
<br />
'''Commands and examples – verify before use:''' <br />
<syntaxhighlight lang="text"><br />
sudo raspi-config<br />
sudo reboot<br />
ls /dev/spi<br />
sudo wget http://www.airspayce.com/mikem/bcm2835/bcm2835-1.71.tar.gz<br />
sudo tar zxvf bcm2835-1.71.tar.gz<br />
cd bcm2835-1.71/<br />
sudo ./configure && sudo make && sudo make check && sudo make install<br />
sudo apt-get install wiringpi<br />
wget https://files.waveshare.com/wiki/common/wiringpi-latest.deb<br />
sudo dpkg -i wiringpi-latest.deb<br />
gpio -v<br />
sudo git clone https://github.com/WiringPi/WiringPi<br />
cd WiringPi<br />
sudo ./build<br />
sudo su<br />
wget https://github.com/joan2937/lg/archive/master.zip<br />
unzip master.zip<br />
cd lg-master<br />
sudo make install<br />
sudo apt-get update<br />
</syntaxhighlight><br />
<br />
== Notes and version constraints ==<br />
* On Bookworm only the lgpio library is available; BCM2835 and WiringPi cannot be installed or used.<br />
* After using the BCM2835 library, the Raspberry Pi must be restarted so that other libraries run correctly.<br />
* Unconnected channels display around 1.17 V or 5.08 V as idle signals; this is normal due to the chip's internal structure.<br />
* The demo adds a delay during data processing, so the effective sampling rate may fall below 30 kS/s.<br />
* STM32 compatibility is claimed in the source but lacks specific instructions; porting requires manual work.<br />
* Loading the SPI driver on Jetson Nano uses 'sudo modprobe spidev'; the correct configuration should be verified before use.<br />
<br />
== Source and revision record ==<br />
* [https://www.waveshare.com/wiki/High-Precision_AD/DA_Board High-Precision AD/DA Board - Waveshare Wiki]<br />
* Source revision: 87049<br />
* Captured: 2026-08-30T02:42:22+00:00<br />
* SHA-256: <code>d65b7df134197c662b66ebcb4edf35633484166b0a179396692a0d78a8388020</code></div>JWTechPublisher