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ESP Pogo Pin Fixture
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Fixture to use for an ESP-04 for easy flashing and swapping between different boards
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Informacje o modelu
- Źródło
- Printables
- Kategoria
- Electronics
- Licencja
- Creative Commons — Attribution — Noncommercial — Share Alike
I planned to debug an ESP-04 and for that I wanted to be able to swap between different ESP's and needed easy access to flashing them without soldering tiny wires to the PCBs.
Changelog
2025-01-26: Uploaded first public ESP-04 R4 revision.
Additional Parts
- 7x P100-B1 pogo pins
- The holes are designed for P100-B1 pogo pins, where the tip has a diameter of 1.0mm and the shaft of 1.36mm.
- You need 7x for flashing to connect: VCC, GND, RX, TX, CH_PD/EN, GPIO0, GPIO15
- Obviously the more GPIOs you want to connect the more you need.
- Optionally you need another pogo pin to install for GPIO13 to put the same amount of pressure on both sides of the chip.
- 2x pin headers 7x1 with a pin pitch of 2.54mm
- Small wire, I used 0.4mm enameled wire
- 3x 10k resistor to pull up CH_PD/Chip enable, GPIO0; pull down GPIO15
Printing
- Material: I used PETG to be a bit more heat resistant while soldering
- Nozzle: 0.25mm, I tried using a 0.4mm but the holes for the pogo pins are printed a lot better with the smaller nozzle
- Layer height: 0.12mm
- Infill: Unimportant, I used 15%, Gyroid
- Perimeters: Unimportant, I used 3, the default for the 0.12mm profile
Assembly
- It's easiest to push in the pogo pins from the outside first.
- You can also install more pogo pins after you soldered already by inserting them from the center outwards.
- Push them in until the shaft hits the elevated section where the ESP will be placed.
- When the ESP is installed the pogo pins should be compressed by 1.85mm, from orginal 8.35mm down to 6.5mm.
- My tested version used 3.35mm compression which is too much force. Please leave a comment with your experience
- Next step is to install the pin headers
- Solder wires from the pogo pins to the pin headers.
- Solder wires with resistors to pull down/up the other required pins.
- I forgot I need 3 resistors, would've made the design differently if I remembered that, put it worked out in the end.
Modifications
I should be able to modify my model for other ESP modules, leave a comment if I should create one for different layouts.