Pool cover

[jaqpot]

Pool cover type

T&A Premium Clean Profile Alu Look (solar) 4.08x9.80 m

Drive system

175 Nm AC motor with pulse counter

Control electronics

• AC Relays to control motor rotation with 24VDC input (in main electrical panel)
• Arduino in the control electrical panel
• Pulse counter connected to the Arduino

RPi

• serial interface with Arduino (USB connector)

Arduino

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[lostcontrol]

We need to have 3 buttons on the Arduino to manually control the cover and set the endpoint(s). Possible with the current electrical panel? Otherwise I can print a case and we can put the Arduino next to the motor. Also, is power with USB enough for the Arduino system or do we need something special for the pulse counter?

[lostcontrol]

Is this just a pulse counter or can we also detect in which way the motor is rotating? In other words, how many signals do we have to read? Only one?

[jaqpot]

It is just a hall effect pulse counter

• 5V (to be checked)
• GND
• SGN (low or high when the magnet is in front of it. It is on the motor shaft, so the rate is quite high (~1000 Hz ?) I already have an arduino in the controller panel but it was intended for waterflow counter, no used at the moment. It was planned to use it as an I2C slave that count the pulse of the water flow (not connected to USB). One USB port is available on the RPI3, adding a dedicated arduino for the cover is a good alternative. But I will need to add a USB receptacle on the Controller panel, to connect with the RPI3.

[lostcontrol]

We could use the same Arduino for both cover and water counter. 1000 Hz sounds like a lot for that motor no? Anyway, the µC should be able to handle that without any problem. We can do the counting in hardware. I hope the signal is clean enough.

Also it would be easier to use the USB serial connection directly instead of I2C for that matter.