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esp32-wrover-breakout's Introduction

Objective

The goal of this project is to make a lower cost esp32 module than the TinyPICO for my other projects.

The TinyPICO is great. It is small and uses low current in deep sleep but it costs me about 40$ CAD once it reaches me. I'd prefer if I could have something at around 10$ CAD which is the goal of this project.

Breadboard Version

On Breadboard

Price

The bare PCB costs 2.67$ CAD from OSH Park. Digikey BOM cost for 1 unit is 8.09$ CAD.

Total is 10.76$ CAD (worst case)

PCB

OSH Park

BOM

Digikey BOM

Programming

The programming is done through the JST connector using the Adafruit 3309 along with the following adapter:

Firmware

The GENERIC-SPIRAM firmware can be downloaded from the following page:

https://micropython.org/download/esp32/

The module has been validated to work with:

esp32spiram-idf4-20210202-v1.14.bin

M.2 Version

With Breadboard Adapter

Price

Bare PCB (OSH Park): 3.47$ CAD BOM (Digikey, 1 unit): 7.84$ CAD

Total: 11.31$ CAD (worst case)

BOM

Digikey BOM

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