analog output

[siamakhaz]

@ethierc please correct me if I'm wrong about this

We need an analogue output to signal the TDT device, indicating the trial's state. This will allow the TDT to synchronize the fibre photometry data with the behavioural data.

[siamakhaz]

for this im suggest using from ```gpiozero import PWMOutputDevice

and a simple lowpass filter on PWM output

[ethierc]

@ethierc please correct me if I'm wrong about this

We need an analogue output to signal the TDT device, indicating the trial's state. This will allow the TDT to synchronize the fibre photometry data with the behavioural data.

We might not need to have an output for TDT, if Pynapse works fine. However, it could be good to have that possibility anyways. Not sure it needs to be analog though. we could use digital pulses.

But we will eventually need analog outputs to control 1 speakers and 1 or 2 LEDs. so at least 3, more is better if it's easy.

[ethierc]

I guess for the LEDs and speakers, it could also be digital out 🤔

[siamakhaz]

@ethierc we can have as much as we need for LEDs and a speaker or buzzer.
there is no limitation for this but to know the usage we can have a better implementation.

[ethierc]

I did not think of that before, but I guess for speaker we could just use square (DigOut) waves

[ethierc]

to record the rotating angle with the fiber photometry system is possible using the two A-B digital signals directly. So I don't think we need analog out if it's complicated to do