Battery-powered PC Fan

This is a project that makes a PC Fan battery-powered. It is compatible with 120mm PWM Fans (2, 3 or 4-pin) RGB is currently not supported Speed control is supported

Print Settings

Supports:

Yes

Resolution:

0.15mm

Infill:

15%

Notes:

When slicing the model, make sure, the side of the lid without the rods is face down on the plate

What you will need

3D Printed Parts

• Lid.stl
• Main Body.stl See printing settings further up this page

Electronic Parts

• 1x 120mm PWM fan
• 1x This specific PWM Fan controller
• 1x MT3608 Step-up module
• 1x 18650 battery
• 1x TP4056 18650 battery charging module
• Wires for connecting parts (you propably don't need more than like, 40 cm)
• 1x 3.5mm button (you choose the height, i went with 6mm, i think, but i would recommend a litlte taller)
• 1x This type of Push button

Screws

• 4x PC Case fan screws
• 2x M3 screws

Tools

• Philips-bit Screwdriver
• Soldering Iron w/ solder

• Hot Glue Gun w/ glue sticks How to assemble

Step 1: Adjust the knob on the MT3608 step-up module to output 12v

• Solder 2 wires (plus and minus) to the battery

• Solder the other two ends to the VIN on the MT3608 step-up module

• Use a mulitmeter to measure the output voltage on the step-up module

• Adjust the knob on the MT3608 until the ouput voltage is 12V Step 3: Screw fan onto case

• route the fan's cable through the cutout in the case

• Screw the fan onto the case with the 4 fan screws on both sides of the case Step 4: Solder electronic parts together

Solder electronic parts together as on the image below.

Step 5: Screw the big push button into the case

• Remove supports from the case

• Remove the nut from the big button

• Screw the big button into the round hole on the side of the case

• screw the nut onto the big button Step 6: Put all parts into the case

• Place the battery into the battery holder. it should just click into place

• See the image below for where to put all of the parts

• The Charging module should fit into the USB-C port on the case. Then, plug in a USB-C cable to keep it in place. The USB-C cable should NOT be powered

• press the small button into the hole Step 7: Solder big button

• Complete the circuit with the big button as on the image below Step 8: secure the parts to the case with glue

• use a hot glue gun to glue the charging module, step-up converter, fan controller and small button to the case Step 9: Screw on the lid

• put the lid on the main body, making sure, cables aren't in the way

• turn the case over

• screw the 2x M3 screws into the screwholes Done!

Now, the battery-powered fan is assembled

How to use

• To turn on, press the big button down and press it again to turn it off
• To adjust fan speed, press or hold the small button. You can see what the different actions on the button do on the aliexpress page
• You can charge it via. the USB-C port on the side
• You can see wether it's charging by the red light in the bottom left of the case

• You can see what fan speed it's on on the top right of the case Things, that could be improved

RGB support

Adding support for RGB would be really cool. Using something like a D1 Mini with WLED installed on it to be able to control the RGB from your phone would be great. The case would need to be bigger, though

More fan sizes

Being able to use more fan sizes than 120mm, like 140mm, 90mm or 180mm would also be cool

Battery percentage

Being able to see the battery percentage would also be really cool

See fan speed

Seeing the fan speed is really annoying on this. Implementing some way to be able to see the 3 LED's and see what mode it is on would be really nice.

If you want to add these features

If you want to add these features or improve upon this design, i have included the Fusion 360 files so you can improve upon it. Just make sure to mark it as a remix of this thing

Category: Computer