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ESP8266-WiFi-Dev-Board

Abhi90808·ESP8266-WiFi-Dev-Board

ESP8266-WiFi-Dev-Board layout, top view — open source ESP8266 board by Abhi90808

About the ESP8266-WiFi-Dev-Board

ESP8266-WiFi-Dev-Board is an open source ESP8266 PCB design by Abhi90808, published on GitHub. It is a 2-layer board measuring 74.6 × 61.2 mm, with 57 components from 29 distinct parts.

Its main chip is the ESP-12E, from the ESP8266 family. Other key parts include the AMS1117-3.3 and CH340G. By type, the board carries 21 capacitors, 15 resistors, 7 connectors, 6 diodes, 3 ICs and 2 transistors.

It belongs with the dev boards & breakouts, iot & wireless and usb & debug tools designs in this gallery.

From the project

Custom ESP8266-based WiFi development board with onboard USB-to-serial, 3.3V regulator, and breadboard-friendly pinout for IoT prototyping

A custom ESP8266-based WiFi development board designed in KiCad 8, featuring onboard USB-to-serial, 3.3V regulation, and a breadboard-friendly pinout — perfect for IoT prototyping.

The CH340G converts USB to UART for programming. The auto-reset circuit uses transistors on the DTR/RTS lines to automatically pull GPIO0 LOW and reset the ESP8266 before flashing — no manual button pressing needed.

Main components on the ESP8266-WiFi-Dev-Board

AMS1117-3.3ESP-12ECH340G

ESP8266-WiFi-Dev-Board bill of materials (BOM)

57 components, 29 distinct parts.

QtyPartRefs
1
AMS1117-3.3
U1
1
ESP-12E
U2
1
CH340G
U3
2
BC817
Q1, Q2
1
12MHZ
Y1
1
USB_B_Micro
J1
1
GPIO_LEFT
J2
1
GPIO_RIGHT
J3
1
ANALOG
J4
1
ADC_INPUT
J5
1
POWER_HEADER
J6
1
BOOT_SEL
J7
1
RESET
SW1
1
FLASH
SW2
1
D1N5819
D1
5
PWR_LED
D2, D3, D4, D5, D6
3
10uf
C1, C3, C5
9
100nf
C2, C4, C9, C10, C11, C12, C15, C16 +1
2
100uF
C6, C21
2
22PF
C7, C8
Show 9 more
QtyPartRefs
2
100uF
C13, C20
1
47uF
C14
2
10nf
C18, C19
8
10k
R1, R2, R3, R4, R5, R6, R7, R8
1
220k
R9
1
R
R10
3
1k
R11, R12, R15
1
470R
R13
1
470ohm
R14

ESP8266-WiFi-Dev-Board design files

The KiCad project lives in the Abhi90808/ESP8266-WiFi-Dev-Board repository on GitHub; these links point at the commit this page was built from.

ESP8266-WiFi-Dev-Board: common questions

What microcontroller does the ESP8266-WiFi-Dev-Board use?

The ESP8266-WiFi-Dev-Board is built around the ESP-12E, from the ESP8266 family.

How big is the ESP8266-WiFi-Dev-Board?

The ESP8266-WiFi-Dev-Board measures 74.6 × 61.2 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the ESP8266-WiFi-Dev-Board?

57 components, from 29 distinct parts. The full bill of materials is listed on this page.

Where can I download the ESP8266-WiFi-Dev-Board design files?

From the Abhi90808/ESP8266-WiFi-Dev-Board repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the ESP8266-WiFi-Dev-Board design in my own project?

The repository has no license, so all rights stay with Abhi90808. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the ESP8266-WiFi-Dev-Board without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug ESP8266 firmware against it before you order a PCB.

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