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I was going to use it to control lights.
Phil's Reef-Pi build
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Which version of reef-pi are you running?
BRS double junction, american marine pinpoint.. all are good options
The pwm pin number are 0 (for GPIO18) and 1(for GPIO19).
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Ranjib your my man! I swear you are super committed to helping us out. I have another question for you, if I wanted to could I use the two pwm pins to control Peristaltic pumps using a mosfet similar to this?? I would use it to speed or slow down the pumps in order to better measure my dosing
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Also was doing research on peristaltic pumps and was wondering if anyone had any suggestions. Im looking at 12V pumps and want to find something cost effective but not super noisy. I have some cheap ones and they are horribly loud! when they run its all I hear because they are annoying. Thanks guys.
AquaRaider44
#Reef4Life
I have the jeabo dp4s which has 4 dosing pumps on it and they are able to be heard but not to bad for the price. 45$ for 4 pumps in a nice housing.
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Hey guys I'm still having trouble getting g the PWM function to work with a Jack on my pico board. For some reason I'm just not able to figure it out and it's just not working. I have a schematic of the circuits
I'm using pins 13, and 18. I'm using it as an led controller and have it set up in Reef-pi as Jack 1 with pins 0,13 and pac9685 and... nothing thanks in advance for any help!
I'm using pins 13, and 18. I'm using it as an led controller and have it set up in Reef-pi as Jack 1 with pins 0,13 and pac9685 and... nothing thanks in advance for any help!
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In reef pi, the setup for using the native raspberry pi pwm is GPIO 18 and 19. You have to use those pins, unless you do some other linux witchery.
Gpio 18 and 19 are then called pins 0,1 and DONT use pca9685 as the driver(thats a seperate item you dont have), instead usee raspberry pi as the driver when creating the jack in reef pi.
Gpio 18 and 19 are then called pins 0,1 and DONT use pca9685 as the driver(thats a seperate item you dont have), instead usee raspberry pi as the driver when creating the jack in reef pi.
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Yeah I added this to the config.txt I'm going to check my coding for the 10th time, it should work
dtparam=i2c_arm=on
dtparam=spi=off
dtparam=audio=off
dtoverlay=pwm-2chan,pin=18,func=2,pin2=13,func2=4
dtoverlay=w1-gpio
dtoverlay=i2c-rtc,pcf8523
dtparam=i2c_arm=on
dtparam=spi=off
dtparam=audio=off
dtoverlay=pwm-2chan,pin=18,func=2,pin2=13,func2=4
dtoverlay=w1-gpio
dtoverlay=i2c-rtc,pcf8523
Dc motor based peristaltic pumps (5v or 12v) are not super precise , but they are cheap , and the circuit is relatively simple. Steer motor based peristaltic pumps are more precise. I run 12v dc motor based peristaltic pump without much issues. You may need to calibrate them once every quarter or so
The schematic you have shared uses opamps. We rarely use them for reef-pi builds, generally straight pwm works for most casesHey guys I'm still having trouble getting g the PWM function to work with a Jack on my pico board. For some reason I'm just not able to figure it out and it's just not working. I have a schematic of the circuits
I'm using pins 13, and 18. I'm using it as an led controller and have it set up in Reef-pi as Jack 1 with pins 0,13 and pac9685 and... nothing thanks in advance for any help!
Dr. Dendrostein
Marine fish monthly
Those temp sensor if going in water, use liquid plastic and coat,,two coats should do.
Dr. Dendrostein
Marine fish monthly
Do you have link for $45,,I see $72, I got 5 head version $73, free shipping. Comes in tomorrow. Ebay. Have 4 head, love it.
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The pins work and if I make 13,18 into a gpio pin I can modulate it 12v on and off but never with strait pwm pin I can't seem to get pwm to work. I've gotten to the point where I want to wipe my sd card and start over
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Hey guys still messing with PWM and still trying to get it to work. I can't seem to get make it work with any pins. I'm not doing something right and don't know what. I am running reef pi 2.4, noobs 3.1.1 I've added the proper coding to config.txt and still can't get it to work. I am getting a message when I try to create a Jack no sure how to fix it
I'm using pin numbers 0,1 and still no luck. If anyone can help let me know I've been going around in circles trying to figure it out. Help me keep my sanity!!
I'm using pin numbers 0,1 and still no luck. If anyone can help let me know I've been going around in circles trying to figure it out. Help me keep my sanity!!
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Now I'm getting this
I am not able to validate this due to not having access to a pi. But I would recommend rebooting pi, every time you change the pwm frequency and check the logs if you see that error in ui. The logs will show more details
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Ok guys I downgraded to reef-pi 2.2 and my Pwn works so for some reason 2.4 does not work for me?????
AquaRaider44
#Reef4Life
I would upgrade to 3.0 alpha 2 as I have had no issues and love the new features. You can always reset and downgrade if you need to.
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