Rotary encoder sampling period

PrsaLab

Hi Josh,
When reading data from the RotaryEncoder module (data = readUSBStream()) what is the sampling rate used?
It seems that there is no Object field to specify the sampling period/rate as in the AI module.

... also, is there a possibility to interface more than 3 modules with the Bpod SM?

Thanks!

Josh

Hello PrsaLab,

RotaryEncoderModule r1 returns positions and timestamps as they are captured from the encoder.
The r2 version measures positions from the microcontroller's encoder peripheral at 10kHz internally, and only if position has changed it returns the latest position and timestamp.

I don't believe there's a limitation on the number of modules, though streaming position from several modules would create a lot of processing load on the PC.

-Josh

PrsaLab

How do we interface more than 3 modules given that the SM has only 3 module ports?

Josh

You'd need State Machine r2.0-r2.5.
Unfortunately r1 and r2+ have only 3 module ports.

-Josh