Ender 3 Pro PSU Switch Case

thingiverse

I viewed Scott Yu-Jan's video on the internet (https://youtu.be/kG_YKeJDaX8). I liked many of his mods and I duplicated them. However I didn't like the switches he used for the LEDs and the Raspberry Pi. Instead I wanted to use rocker switches. So I bought some rocker switches and proceeded to cut holes in the power supply case for the switches. The switch hole on the right was good. The switch hole on the left was not good. Seems I got in a hurry and made the hole a little too big. The switch didn't fall out but it wasn't secure either. Not a happy camper. It seems you can't buy a replacement. And the designs on Thingiverse and other web sites weren't actually for my printer, the Ender 3 Pro. Could I print my own case with the switches where I want? I have a 3D printer. I have a little experience with FreeCAD. I have a set of calipers. Why not? The design process didn't take too long. I printed it once and found I was off by a couple of millimeters here and there. I made the necessary adjustments. And then got carried away. I decided to spice things up by allowing placement of the power switch, the LED switch, and the Raspberry Pi switch. I chose the switch placements I wanted and printed again. The second print is what I used and displayed in the pictures. However it was off just a bit. The screw holes which mount the case to the PSU were a little low. I moved them up 0.5mm. The power supply switch screws were a little too far apart. I reduced the distance by 0.5mm. The results are the STL files I've uploaded. Each file has the switches in a different location. And are designated from left to right. I've also uploaded the FreeCAD file in case anyone wants to do something else with the case. Please post if you make it so we can all see your choices! Thanks. Rocker Switches: https://www.amazon.com/dp/B07SPY9H7Y?psc=1&ref=ppx_yo2ov_dt_b_product_details FreeCAD NOTES: FreeCAD doesn't have any type of conditional processing in the spread sheet. So each hole location has been calculated. And the positions can be changed by setting the switch hole to the appropriate value. The parameter for the power switch location is 'power_switch_hole_x_offset'. And it can be set to the left, center, or right. power_switch_hole_x_offset power_switch_hole_x_left power_switch_hole_x_centered power_switch_hole_x_right Likewise the accessory switches can be set to the left, center, or right. However the accessory switches are based on the location of the power switch. If the power switch is on the left side, then the center location for the accessory switch is 'acc_switch_far_center_x_offset'. If the power switch is on the right side, then the center location for the accessory switch is 'acc_switch_near_center_x_offset'. acc_switch_led_x_offset acc_switch_pi_x_offset acc_switch_left_x_offset acc_switch_near_center_x_offset acc_switch_far_center_x_offset acc_switch_right_x_offset An example: From left to right, make the switches LED, Pi, Power Switch. power_switch_hole_x_offset = power_switch_hole_x_right acc_switch_led_x_offset = acc_switch_left_x_offset acc_switch_pi_x_offset = acc_switch_near_center_x_offset After the switches are placed, select the 'Pi String Pad' in the Model tab until the entire model is highlighted. Then select File -> Export to produce the STL file. I suggest X and Y rotation in the slicer to get the case standing upright.