post 387What circuit is meant to go on that PWM output then?
I didn't come across it reading this thread?
You'll need a separate led driver. The controller only provides a 5V/40ma PWM signal. That's not enough current to drive high power leds.
I agree, I would love to have a system to do an AWC, not just an ATOHello everyone,
First, Thanks a lot to all the contributors here!
I am very interested in this project. I would like to build one for my own use. But I have a question:
Has any sort of automatic water change (AWC) system been implemented with iAqua?
If not, can something be done? It could be as simple as using two floats (one bottom, one top) as sensors. At a set time, turn on a pump. Old water goes out. When both floats go low, latch another pump "on" until the top float goes high. Yeah, I know......easier said than done! LoL
PS: I did search this thread but did not find any reference to AWC. ATO functionality is there, I hear.
Here's a cheaper alternative...I agree, I would love to have a system to do an AWC, not just an ATO
https://www.bulkreefsupply.com/awc-auto-water-changer-plus-ato-autoaqua.html
this system would include what I want but it's expensive for a stand alone system
Think you are also on aquaforum.nlWell obviously the Arduino is not gonna power the tanklights all by itself, that's why you use the PWM signal to control the gate on an N-channel MOSFET, I think?
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This example is for 3 channels, but its all the same. Plus ofcourse the power being drawn from an external supply (shared GND!).
I thought you had to use a servo driver board to unpack the PPM-train into individual PWM signals, because the code involves PCA9865. But apparently that's just an option, and the channel PWM signals are available on pins 2 ~7 anyway.
Some of us have started projects using the RaspberryPi4 and NodeRed. Albiet, we rely heavily on sensors/circuits over i2c from Atlas-Scientific for measurement and dosing. Likewise, I'm using i/o boards from NCD.io for Control (relays / pwm).Hmmmm...I wonder if anyone is still using and maintaining code for this project. This thread was started 6 years back. The OP has been absent for 5 years. There is another project called Mr. Aqua on GitHub, linked in here somewhere. Its notes say that it is based on this code...but even that is 2 years old.
I wonder if I am barking up the wrong tree. Should I look for something more modern and actively developed and supported?
Any tips, anyone?
Bueller? ;-)