This is a placeholder topic for “MOSFET Module (Screw terminals)” comments.
Keep your IO protected and drive high-power outputs.
Read moreI have one of these modules that I used in a project to control a fan using just a logic circuit, fed by 12v. No arduino or pico etc..
My question is, could this be used with a Pico? Will the 3.3v be enough to drive the signal pin on this board?
Given that the pico will have a 5v source and there will be a 12v source to power the fans.
My hope is to create a project with a built in menu to create a settable temperature range for the fan to turn on and off with readings from a temperature probe. At the moment it is just controlled via a potentiometer to set the low cut-off range to shut the fan down. No PWM or specific temperature range, which is what I’m hoping to achieve.
Also, do I need to protect the signal line back to the Pico, with a resistor or diode, so it won’t have any residual power back flow and cook the Pico board?
Thanks! Dave
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Hi David,
Welcome!
I’ve had mixed experiences with these modules at 3.3V - these ones work quite consistently: MOSFET Power Switch Module | Buy in Australia | CE09733 | Core Electronics
At a glance both modules have a gate resistor to protect the MCU
If you wanna make everything a bit smaller these work a treat as well: Pololu Isolated Solid State Relay/Switch, SPST, 60V, 7A | Buy in Australia | POLOLU-5420 | Core Electronics
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Thanks Liam!
I’ll check both of these out, the Polulu is tiny! Maybe that one will be for my final verision.
Cheers!
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