Olimex Support Forum

News => New Products release => Topic started by: Suasua44 on June 12, 2025, 12:21:17 PM

Title: ADS1220 wiring on Raspberry Pi 4B
Post by: Suasua44 on June 12, 2025, 12:21:17 PM
Hi everyone,

I'm trying to connect an Olimex ADS1220 on my Raspberry Pi 4B.

I'm a beginner with this kind of SPI ADC and I don't really know how to properly wire it to the RPi. Particularly, I don't understand why there is two AVSS pins and where is the SCLK pin.

Thank you in advance for helping me !

Sua
Title: Re: ADS1220 wiring on Raspberry Pi 4B
Post by: LubOlimex on June 12, 2025, 12:57:38 PM
The clock is CLK.

Just connect AVSS and GND to GND of the Pi 4B.

For VDD and AVDD connect them to the 3.3V of the Pi 4B.

Maybe also check this project:

https://github.com/OLIMEX/BB-ADS1220/tree/master/SOFTWARE/OLINUXINO