WifiCom Case

Case designed for storing a WifiCom circuit.

Parts list

• 1x Raspberry Pi Pico 2
• 1x Li-Po Battery 400mAh
• 1x Battery charging circuit TP4056 (Micro USB)
• 1x OLED Display 0.96" 128x64 I2C
• 3x Push Buttons 6 x 6 x 7.3 mm
• 3x Cover for Push Buttons 6x6mm
• 1x LED 5mm
• 1x Buzzer
• 1x Switch on-off 10 x 15 mm
• 1x 1nF Ceramic capacitor
• Resistors: 1x each of 470K, 100K, 6K8, 1K, 220R
• 1x Nickel strip 3 x 0.20 mm (or 2 small screws)
• 4x M3 bolts 12 mm

Circuit assembly

I used two small perfboards to solder the push buttons and the prongs circuit. The other components are kept in place by the wires and the holes in the case. The battery and the PCBs (Raspberry Pi Pico and charging circuit) are glued with double-sided tape.

Prongs

The nickel strip is wrapped in the openings at the top and soldered into the prongs circuit wires. I reccomend sanding the nickel strip to make it easier to solder. If you don't have it available, you can use two small screws and make the thread in the middle of the openings.

You might need to drill a small hole in the top to fit the V-Pet pin. You can still make contact with the prongs without it, but it makes it easier to do it.