FEZ Accu Test

Connecting the device to other hardware

The nice part about my circuit is you can connect it to different types of circuits. You could connect it to a microcontroller (it has to support I²C and an A/D input), the K8000 card, ...

MICROCONTROLLER. connect: the GND to the ground of the microcontroller, the SCL/SDA to the respective SCL/SDA inputs, the analog output to one of the analog inputs of the microcontroller.
VELLEMAN K8000. connect: the GND to the GND connection at the side of the K8000, the SCL/SDA to the respective SCL/SDA inputs of this connector, the analog output to one of the AD inputs.

Note: I am not going to do research on how to control this circuit through a K8000 card as I am using my FEZ board as the interface. But it is possible. period.

Connecting the device to my FEZ

I decided to use my FEZ Panda II to control this device. You need to create three connections between the device and the FEZ Panda: SCL/SDA and the analog output.

The FEZ has two ports for the SCL/SDA connections. If you own the FEZ Connect module you can simply use cables with JST3AA connectors for the connections: the SCL/SDA connectors are on this module.
The analog output has to be connected with one of the analog inputs on the FEZ. I have used the analog connection An2 for the job.