You can use the same instructions for the two Pi pwm pins but the extra two you would use pwm from the pca9685. If you prefer you can use 4 pwm pins from pca9685 instead of the pins from Pi. The pca9685 connects to the SCL/SDA pins on the Pi and then you added a pca9685 driver in reef-pi to use the pins. Once you add the driver in reef-pi you'll have access to all 16 pins when you create connectors for the dosing pumps so select the pins you use.First of all, I would like to congratulate and thank @Ranjib for developing and working hard to make the Reef-Pi stable, safe and reliable!
This takes time and dedication, in addition to a lot of knowledge!
Now I have the vnc working, I have access to Reef-Pi inside and outside my network! I've done all the tests, now it's time for the parts list.
I intend to have:
8 relay-controlled sockets
Temperature sensor
PH monitor
Set up some timers and macros, all of which I have already found instructions on how to do, but I need:
4 metering pumps!
But I only found an explanation, tutorial, schema and parts for just two pumps, with the Reef-Pi pwm, I already searched the old forum, with more than 800 pages and I didn't find it, I would like to have an assembly scheme, tutorial and parts for 4 or more pumps, with PCA9685, can I connect the pumps directly to it or do I need some other module?
Thanks in advance!
I was deceived by the previous message, I wrapped up here with the translator and I was unable to delete it afterwards.