@philshel i forgot to clarify, your question was around the pin number in reef-pi UI or in raspberry pi physical pinout?
import requests
import time
# This script shows how to update a light using the api
# Lets assume we have a light with ID 1 and that light has only one channel controlled by pin 1 (pca9685)
light_id = "1"
pin = "1"
ip = "127.0.0.1:8080" # IP
auth= ("reef-pi", "reef-pi") # username and password
u = "http://" + ip + "/api/lights/" + light_id
resp = requests.get(u, auth=auth)
light = resp.json()
for x in range(10):
light["channels"][pin]["auto"] = False # change the light to fixed mode
light["channels"][pin]["fixed"] = x * 10 # PWM value in percentage
resp = requests.post(u, auth=auth, json=light) # update light
time.sleep(1) # wait for a second
Yes
I am using adj 8 Chanel relay pack for this, which required 12v per channel on/off signal. The wiring is reverse (shared power and individual channel is sink ) because I had uln2803 which is a sink type darlington.
Power controller build with housing and without wiring
With wiring
The whole set with adj srp 2 , 8 channel power strip , connected by db9 cable
I dont think so. You are using the USB connector, but the powerstrip expects 12v on/off signal passed through the db9 connector. So, if you use this connector, you'll still need a junction box where you'll mount a usb breakout connector, and then pass the 12v signal. Pi is a 5v device, USB standard specs are all 5v based (A & B) https://www.beyondlogic.org/usbnutshell/usb2.shtml
Nice, so could this could connect like a pH sensor module, temp sensor module, ATO sensor module, etc and connect back to a pi for sensor readings?Very interesting, could get 2-4 ports.
https://sgcdn.startech.com/005329/media/sets/ICUSB232xX_Manual/ICUSB232xX.pdf
Very interesting, could get 2-4 ports.
https://sgcdn.startech.com/005329/media/sets/ICUSB232xX_Manual/ICUSB232xX.pdf
Probably I am overreacting, but I doubt it will be that trivial. You'll need an intermediate box (like the one you have specified) and power supply for that. I am still not sure if that box in turn can generate 12v on/off signal. Remember that this intermediate component pronises to let users convert USB to serial data, but the power strip does not quiet use the db9 connector for serial communication, its a mere connector that has 9 pin, and the powerstrip uses 8 of them to control 8 relay and another one for +ve. Its not used for data (i.e. there is no clock synchronization involved). There are other USB controlled poweroutlet as well (search for PowerUSB), but those are rather hard to resource, and not very opensource friendly (like we dont know whats the protocol to control them, no code is available in opensource).
As of now, it should be ok to control two power strips using two db9 connector, and total 16 outlets . I have plans to work on adding support for mcp23017 after 2.0 release. That will unlock the use of many more of pins. But I doubt we practically need more than a couple
I like your opinions. Keep them coming
I have always pondered about using an computer power supply (ATX SMPS) .. but my tanks being nano and pico, never really needed that many pieces of equipment. At most I need 6-8 equipment per tank, and that fits pretty nicely with AIO build with a single power strip. But I can see that this is not enough for larger tank. But I also wonder if you really need light and few other equipment to be controlled by power outlet.. they are rarely switched off and can be put on manual switched outlets (like the ones trip lite sells)
