Raspberry Pi 3 Fan Power Pins

The raspberry pi boards typically draw much lower amounts between 200 and 500ma. Just slid it on three pins instead of two the third connector pin is just a dummy pin now. You may need to switch the wires in the connector so the red is on gpio pin 4 and the black is on ground gpio pin 6.

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Plug the fan directly into your raspberry pi s 5v gnd gpio power pins as shown for instant cooling.

Raspberry pi 3 fan power pins.

The raspberry pi has two i2c connections at gpio 2 and 3 sda and scl are for i2c0 master and physical pins 27 and 28 are i2c pins that enable the pi to talk to compatible hat hardware. Control a cooling fan on a raspberry pi 3. You can use a 3 pin 12v pc fan on the pi 3. The desktop kit includes the official raspberry pi 4 case which is an enclosed plastic box with nothing in the way of ventilation.

The recommended amount is between 700ma for a raspberry pi model a and up to 2 5a for a raspberry pi 3 model b see power supply requirements in the magpi issue 56 page 39. The foundation even offers a raspberry pi 4 desktop kit. The raspberry pi foundation s pi 4 announcement blog post touted the pi 4 as providing pc like level of performance for most users. With a decent power supply such as the official 3a adapter on the pi 4 you can expect to pull about 1a to 2a.

Use black and red snip the other wire s as they will not be used. Place in your case or even better on top of your pi s cpu to give it extra air flow. Usage depends on what you re doing with the pi. Using this approach the fan will run all the time i think it is much more i.

The fan should receive power automatically when the pi is booted. The 5v power pins are connected directly to the pi s power input and will capably provide the full current of your mains adaptor less that used by the pi itself. If you d like your fan to only run when needed based on pi temperature check out our raspberry pi fan controller guide. Add a fan to a raspberry pi 3 with control to turn it on and off as required an easy way to add a fan is to simply connect the fan leads to a 3 3v or 5v pin and to ground.

Compatible with any and all raspberry pi computers but only the pi 3 runs hot enough to benefit from any cooling when doing intense computations. Connect the fan s red wire to gpio pin 4 5v and the black wire to gpio pin 6 ground.