ESP8266-01/12 - Upgrader / Flasher

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Simple PCB Widget to Upgrade/flash latest firmware SDK into ESP-01 ESP-12. Single PCB, with integrated ESP - 01/12 connectivity.

Amar Potdar

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Files 5
Components 6
logs 2
Instructions0
Discussion0

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Schematics - 3.3V Version
02/25/2016 at 20:32 • 0 comments

Well, After drafting 5V version of the tool, it wasn't hard to draw for 3.3V Version. All i done was, just made the extra copy of the schema.
ESP8266 and ESP-01/12 are 3.3V-only chips. That's how they start.
All I have to do was to, just remove MOSFETs, LDO and couple of R's & C's and done.
Just check it out.
Sorry for the empty space.
DOWNLOAD FILES HERE.
Schematics - 5V version
02/25/2016 at 20:24 • 0 comments
Schematics Designing ESP01/12 flash tool is quit straight forward. Before starting, you first need to understand the How-to process of flashing latest firmware into ESP8266 chip.
You can find it here.
This is the best & detailed article i found which help me, How-to upgrade the firmware and also give me an idea to build PCB widget around it.
For 5V version I have added
- LM1117-3.3V LDO
- MOSFET (BS1338) as a logic level translators on RX & TX lines.
- Two Push Buttons
  - RESET
  - FLASH
DOWNLOAD FILES HERE.