ADC + Arduino

[Talha]

Hello All,

I am simulating a data acquisition system in Proteus 8.9. The system contains a 24-bit ADC (ADS1255) in a slave configuration and Arduino Uno in a master manner while communicating using SPI (Serial Peripheral Interface) Protocol. The serial data Arduino is receiving from ADC is displayed on a virtual terminal block in proteus.

The problem I am facing is that the output is not following the input voltage applied on the ADC. Output always consists of 1's i.e. every bit in ADC output is 1 no matter what the input is. Does anyone have solution for this?

I am aware that this ADC works on 3.3V and arduino works on 5V, so I changed the power rails from 5 to 3.3V but output didn't change. What am I missing ?

[David]

Hi,

Please can you attached your project or send it to support@labcenter.com with a link to this forum topic and your customer number? Thanks.

Regards,
Dave.