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ESP12FPSU

R8bert·esp32-psu

ESP12FPSU PCB layout, top view — open source ESP8266 board by R8bert

About the ESP12FPSU PCB

ESP12FPSU is an open source ESP8266 PCB design by R8bert, published on GitHub. It is a 2-layer board measuring 80 × 100 mm, with 55 components from 29 distinct parts.

Its main chip is the ESP-12F(ESP8266MOD), from the ESP8266 family. Other key parts include the MP2451DT-LF-Z, DS18B20 and XT60. By type, the board carries 20 resistors, 12 capacitors, 8 ICs, 3 connectors, 3 diodes and 2 transistors.

It belongs with the iot & wireless designs in this gallery.

From the project

A smart, programmable lab power supply controlled by an ESP32 microcontroller. This project combines hardware design and firmware development to provide precise, remote control over voltage and current using a custom-designed PCB.

A smart, programmable lab power supply controlled by an ESP32 microcontroller. This project combines hardware design and firmware development to provide precise, remote control over voltage and current using a custom-designed PCB.

This project was created to make a standard lab power supply smarter and easier to use. By adding an ESP32 and a custom interface board, I was able to control voltage, current, and safety features remotely — either through a web dashboard, serial commands, or a mobile app.

ESP12FPSU, from the project README
From the project README

Main components on the ESP12FPSU

ESP-12F(ESP8266MOD)MP2451DT-LF-ZDS18B20XT60

ESP12FPSU bill of materials (BOM)

55 components, 29 distinct parts.

QtyPartRefs
1
ESP-12F(ESP8266MOD)
U1
2
MP2451DT-LF-Z
U2, U5
2
DS18B20
U3, U7
3
XT60
U4, U6, U8
1
AO3400
Q1
1
IRF9540NPBF
Q2
2
24.245.2
CN1, CN2
1
PROGRAMMER
J1
1
YX-YT9042 3V
BUZZER1
1
XF-508P-A-B
FUSE1
1
Button-6x6x9-Right-Angle
SW1
2
WS2812B-4020
LED1, LED2
2
SS24_C908678
D1, D2
1
1N5819
D3
1
0630 2.2uH
L1
1
0630 3.3uH
L2
6
100nF
C1, C5, C6, C10, C11, C12
2
10uF
C2, C8
2
33pF
C3, C7
2
4.7uF
C4, C13
Show 9 more
QtyPartRefs
1
40k
R1
2
124k
R2, R7
4
100k
R3, R5, R10, R11
1
24k
R4
2
4k7
R6, R12
7
10k
R8, R9, R13, R14, R15, R16, R17
1
20k
R18
1
52k
R19
1
100
R21

ESP12FPSU design files

The KiCad project lives in the R8bert/esp32-psu repository on GitHub; these links point at the commit this page was built from.

ESP12FPSU: common questions

What microcontroller does the ESP12FPSU use?

The ESP12FPSU is built around the ESP-12F(ESP8266MOD), from the ESP8266 family.

How big is the ESP12FPSU PCB?

The ESP12FPSU measures 80 × 100 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the ESP12FPSU?

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

Where can I download the ESP12FPSU design files?

From the R8bert/esp32-psu repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the ESP12FPSU design in my own project?

The repository has no license, so all rights stay with R8bert. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the ESP12FPSU 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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