Full article and specs on my site www.mischianti.org

ESP32-wroom-32, esp32-S: flash, pinout, specs and IDE configuration

I will use esp32-wroom-32, but first I want to prototype my project on breadboard, the IC is not suitable for breadboard, so I go to make a 3D printed adapter and PCB to get a generic programming board.

You can find the esp32-wroom-32 and esp32-s on AliExpress ESP32 Dev Kit v1 - AliExpress selectable - AliExpress TTGO T-Display 1.14 ESP32 - AliExpress NodeMCU V3 V2 ESP8266 Lolin32 - AliExpress WeMos Lolin32 CP2104 CH340 - AliExpress ESP32-CAM - AliExpress ESP32-WROOM-32 - AliExpress ESP32-S

ESP32 programming board Aliexpress adapter esp8266 esp32

3D printed adapter

A good and fast solution is to print one adapeter. Exists a lot of adapter, but I think this is a good choice, you must print with reduced extruder size like 0.31 and reduce the flow to get a good print.

Now you must add the wire, but first probably your printer generate waste and close the little hole, usually I’m going to drill It to clear with 0.9mm bit of my CNC.

CNC drill bits on AliExpressI use a telephone wire that is a single copper wire with 0.6mm of diameter, and I’m going to insert in the adapter.

Insert it into the innermost holes and push it out about 3mm

esp32 wroom 32 socket wiring step 01

esp32 wroom 32 socket wiring step 02

Bend the wire to the external of the adapter.

esp32 wroom 32 socket wiring step 03

esp32 wroom 32 socket wiring step 04

Cut external part of the wire, and extract,

esp32 wroom 32 socket wiring step 05

then reinsert in the internal and external hole.

esp32 wroom 32 socket wiring step 06

Now check if you need to cut more the wire of the internal hole, and bend It.

esp32 wroom 32 socket wiring step 07

Repeat for all pins.

esp32 wroom 32 socket breadboard friendly

esp32 wroom 32 socket breadboard friendly bottom

Now you can use It directly on the breadboard.

esp32-wroom-32 socket programming flash breadboard photo

Programming board PCB

The next step is to do a PCB instead the breadboard to program the device, I’m going to use the adapter only to create/test new circuit.

ESP32 wroom 32 S programming board pcb

Here the list of component:

Shopping List

Based on the tutorial “ESP32-wroom-32: flash, pinout, specs and IDE configuration” I create a PCB.