128 channel 12-bit ADC with I2C interface. Stackable and daisy chain-able!Designed by FERCSA in Hungary
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What is it? In short, it's a 128 channel ADC on four boards in a stacked configuration. It's similar to my 24 channel board except the PWM outputs are swapped out for analog inputs and stacked toge...Read More…
In short, it's a 128 channel ADC on four boards in a stacked configuration. It's similar to my 24 channel board except the PWM outputs are swapped out for analog inputs and stacked together.
12 bit, 128 channel single ended Analog to Digital Converter (ADC). Communicates with Arduino, Raspberry Pi using I2C bus.
The power supply requirement is DC 5V. IO pins are 3.3V which makes it compatible with the latest Arduino, Raspberry Pi, BeagleBoard, Teensy, ESP32 or any other Dev boards in nowadays.
A byproduct of one of my project, but it's versatile enough to share with the community.
With the proper header, it can be stackable on each other. There are mounting holes on the board if needed.
One of the special features is you can select any of the 112 unique (7-bit) I2C addresses if you respect the I2C specification. But the possibility is there to exploit all 128 addresses if you want it. So basically in a multi-board configuration, the theoretically available channels are HUGE.
On board, there is a high precision voltage reference which gives you more accurate readings.
For Arduino, Linux C and Python examples please click on the 'source code' link. I2C signal diagrams available too, so you can port it to any system if it has an I2C port.
Color of the PCB can be different due to the different PCB manufacturer.
Some improvements since Feb of 2021:
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