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Standard

1.Easy to use and quick to get started

2.The process supports design scales of 300 devices or 1000 pads

3.Supports simple circuit simulation

4.For students, teachers, creators

Profession

1.Brand new interactions and interfaces

2.Smooth support for design sizes of over 30,000 devices or 100,000 pads

3.More rigorous design constraints, more standardized processes

4.For enterprises, more professional users

Std EditionESP8266 Programmer

License: CC-BY-SA 3.0

Published Time:2018-12-01 20:11:48
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Description

ESP8266 Programmer is a breakout board to upload firmware on ESP8266. It benefits of USB-C connector, the new de-facto standard on the market. It is designed to be attached to Lolin/Wemos D1 mini shield. If you are not going to use this form factor, you can break the external frame, gaining some mm^2 (video). Despite the name, it can be also used to program ESP32 and ESP32-S2.

New version here.

Main components

  • Serial-USB converter CH340C
  • A low dropout voltage regulator ME6211 (max 500mA)
  • 2 NPN digital transistors to control output pins embedded in UMH3N
  • USB-C connector for power supply and data

Assembling

This board is entirely solderable by hand, no need of stencil. You will need the hot air gun for the USB-C connector and UMH3N.

Usage

You just need to install the driver for the CH340C.

Changelog

  • 1.0.0 ⚠: First version
  • 1.1.0 ❌: Resistor on RX 470 ohm to protect the line; modular form-factor Wemos D1 Mini; used 0805 package instead of 1206); micro USB -> USB-C; B5819W --> B5817W (lower forward threshold)
  • 1.2.0 ✅: fix Pd resistor on USB-C connector required to sink energy; LED red to indicate power on; Breakable PCB split in 2 parts, to ease breakability
  • 1.2.1 ✅: circles around pins to identify the one used in Lolin D1 mini form factor; minimum track width 0.2mm
  • 1.2.2 ❔: improved readability of schematic and PCB; removed 0603 -> 0805 package for resistors, capacitors and LEDS; minimum 0.8mm NPTH cut to match JLCPCB capabilities

Versioning conventions

Each printed board has a version in the format x.y.z.

To quickly indentify the status of each version, I use emojis. The following list explains their meaning:

  • A White Heavy Check Mark (✅) means that it is successfully tested;
  • A Negative Squared Cross Mark (❎) means that it was almost successfully tested (the main functionalities are fine), but there are bugs affecting minor funcionalities;
  • A Warning Sign (⚠) means that the board is not usable out of the box but the bugs are fixable in DIY (decent) fashion;
  • A Cross Mark (❌) means that there are some problems that makes it unusable;
  • A White Question Mark Ornament (❔) means not tested.

small esp programmer.jpg

Documents

ESP8266 Programmer

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ESP8266 Programmer

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ID Name Designator Footprint Quantity
1 CH340C U1 SOP-16_150MIL 1
2 UMH3NTN UMH3N SOT-363 1
3 Serial Header SERIAL HDR-6X1/2.54 1
4 1uF C1,C2 0805 2
5 100nF C3 0805 1
6 10uF C4 0805 1
7 470 R1 0805 1
8 5.1k R3,R2 0805 2
9 1k R4 0805 1
10 nSMD050 F1 1206 1
11 LED-Red(0603) LED1 LED-0805 1
12 ME6211C33R5G ME6211 SOT-353 1
13 Wemos D1 Shield U2 WEMOS_D1_MINI 1
14 USB-310F USB3 USB-TYPE-S-C8.64X7.25 1
15 B5817W D1 SOD-123 1

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