They are 12v led light modules. They turn on when the stirrer is of. That is what they should do with this wiring. The problem lies with the initial power to switch...I think. Going to play around and start fault finding therem
Deez DIY Magnetic Stirrer
- Thread starter Dietz
- Start date
Problem not at the the power source, connected fan and led directly to jack and both worked, so between the switch, potentiometer and Voltage regulator I did something wrong.
I stand to be corrected here, but you should be able to use on adapter to power both (Voltage wise) depending on how you connect them, But just make sure the Amperage is enough to carry the rating of both fans Combined cos it wont use more Volts but definitely more Amps
Please note I am in no way qualified to make these suggestions, but am eager to try and help
What he said. I'm a technician and fitted a cheap ac/dc adapter to a fan on my biltong and herb dryer - has been working for over 2 years now. The original fan stopped working so replaced with a pc fan spare... Works very well.
Power was not the problem...there's something else at play here...something sinister, something older than the 1st evil, I cannot fight this, I have to destroy it.
Testing everything now, wire for wire...no point in redoing the whole schematic if it's something like a faulty wire or switch etc.
Testing everything now, wire for wire...no point in redoing the whole schematic if it's something like a faulty wire or switch etc.
@Raindance I think I might be understanding the switches wrong. 
Led module positive connected to ON from switch. LED negative connected to Negative Ground from DC jack. DC jack positive connected to ON from switch.
Is this not supposed to create a circuit that would power up the LED when the switch is toggled? Instead it gave my spark noises at the DC jack so had to unplug it quickly. I'M sure I'm missing something?
Led module positive connected to ON from switch. LED negative connected to Negative Ground from DC jack. DC jack positive connected to ON from switch.
Is this not supposed to create a circuit that would power up the LED when the switch is toggled? Instead it gave my spark noises at the DC jack so had to unplug it quickly. I'M sure I'm missing something?
What are the specs of your led module? Does it need a led driver?
If I understand your description correctly , what you are describing is the same as connecting the led pos and neg to the power supply pos and neg. The switch is irrelevant in this circuit. As i understand it.
You mentioned earlier that the led must be on when the switch is off. This has me pussled a bit. Is it a simple switch or a dual state one? Dual state meaning when the toggle up or down completes two different circuits.
Regards
That's correct, I'm simply adding the switch to see if I understand everything correctly and also to test that all components are working. At the moment the trying to up my knowledge and trying to find a way that the logic makes sense to me.
Sorry for the misunderstanding of the previous post, the LED should not be on when the stirrer is not, I simply wired it incorrectly and then it made sense to me what.
Its a 12V 2 light strip, it works perfectly, but just trying to figure out what I'm doing wrong so I can better understand how exactly switches works.
I am pretty sure you need a led driver - I have a led driver that powers up to 4 x 3w led chips.
This is what I use
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You should flip those fans over, so that you can glue the magnets to the rotating base in the middle. Unless the magnets are on the other side, in which case ignore my comment.
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No stress @Steyn777 thats exactly why I started this thread, to document my build and hopefully help other with the same need further down the line.
Its been a fun project!
Here's my setup:
https://www.ecigssa.co.za/hack-diy-magnetic-stirrer.t37471/
The setup sits on top of my PC which provides a bit of heat and the fan is connected to the fan controller on the PC board so speed control is done via software.
I also struggled with the magnets being unbalanced but hooking the fan up to the fan speed controller fixed that. Start the fan off at 40% for a few minutes (the bar barely turns but stays in sync with the fan) and the VG heats up and thins out a bit and then crank the fan up to 80% and it maintains sync. Hardly an ideal scenario but fits my needs perfectly.
https://www.ecigssa.co.za/hack-diy-magnetic-stirrer.t37471/
The setup sits on top of my PC which provides a bit of heat and the fan is connected to the fan controller on the PC board so speed control is done via software.
I also struggled with the magnets being unbalanced but hooking the fan up to the fan speed controller fixed that. Start the fan off at 40% for a few minutes (the bar barely turns but stays in sync with the fan) and the VG heats up and thins out a bit and then crank the fan up to 80% and it maintains sync. Hardly an ideal scenario but fits my needs perfectly.
Woohooo that`s one bad ass looking Stirrer. where or from what did u get that POT from ???
we use them at work for speed control so found an old panel and grabbed it from there.
This driver is required when you use AC current, if you are using DC current u dont need that.
Retro.remi ds me of the cases we took to school in sub A and B
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those brown ugly things?? Gosh I absolutely hated mine!
Didn't mean it like that.meant it got a classic look with the dial pot and switch.old school but cool
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