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Thank you so much for your help again, I really apprecciate and it was precious

I have a question, we should run the system for 24hours, do you think is fine or there is gonna be a voltage overload again?

I figured it out !! I put the darlington in the wrong way

Hello, I've tried the system today, the problem is that when you connect the power supply to the breadboard, the fan turns on and doesn't stop blowing air. What should happen instead is that the fan starts off and only activates once the threshold is exceeded, then turns off after 10 seconds...

amazing. Thank you so so much !! I really appreciate your help

To sum up, these are the connections: Power Supply 12V (Red Wire): Connect the red wire from the 12V power supply to both the COM (pin 10) on the ULN2803A and to the positive terminal of the fan (fan’s red wire) Power Supply 12V (Black Wire): Connect the black wire from the 12V power supply to...

so do I need to replace the mosfet with darlington driver? The fan will be connected to the driver (black to pin 18 and red to the red of a 12V adaptor), what about the black of the 12V adaptor? In addition, the driver will be connected to teensy just thanks to pin 1 which will be connected to a...

also, which is the best position for the diode?

The fan draw 0.116A. Which type of level converter and flyback diode do you suggest? Thank you so much for your help, I really appreciate it

I am monitoring two systems simultaneously, and in one of them, the MOSFET became extremely hot and stopped working; in the other, it was under stress and caused voltage spikes on the drain, which I believe would have eventually burned it out if I had continued using it. Here is a photo of my...

Hi everyone, what does this message means? I'm using teensy 4.1. In my circuit, I have an IRLB8721 MOSFET rated for 60A-30V, and after keeping the circuit on for more than 4 hours, the signal started fluctuating, and after a while, the MOSFET burned out. Could these issues be related?

Yes, thank you for your help. I tried the configuration done by Mark and it's working. I will try even yours in the next days. Thank you so much again

Can I ask you: is the connection circle in red pin A0 of the teensy?

Yes I will try both, do you think the code is correct?

So is better to use this configuration? not the one done by Paul?

Thank you so so much for the advice. I'm trying to replicate the circuit on the breadboard. Is the code correct now?

I don't have a schematic unfortunately. Does this help?

I am building a system that will turn on a computer fan for 10 S in response to vibrations. Vibration is detected with piezo electric elements mounted in . The signal is sent to a teensy that controls a 12V fan. I set a threshold to determine when the fan should turn on, It turns off after 10...