HardLabs

ESP-32-ruler

rapha-tech·ESP-32-ruler·Kicad files/ruller_battery_v1/ruller_battery_v1.kicad_pcb

ESP-32-ruler PCB layout, top view — open source ESP32 board by rapha-tech

About the ESP-32-ruler PCB

ESP-32-ruler is an open source ESP32 PCB design by rapha-tech, published on GitHub. It is a 2-layer board measuring 38 × 151.9 mm, with 58 components from 32 distinct parts.

Its main chip is the ESP32-WROOM-32, from the ESP32 family. Other key parts include the CH340C, TP4057, NCP167BMX330TBG, FS312F-G and FS8205. By type, the board carries 14 resistors, 13 capacitors, 12 switches, 7 diodes, 6 ICs and 3 transistors.

It belongs with the displays & leds, power & battery and retro computing designs in this gallery, and the repository also holds 1 earlier revision of it.

From the project

PCB ruler featuring an ESP-32 module, push-buttons and an OLED screen

ESP-32-ruler, from the project README
From the project README

Main components on the ESP-32-ruler

CH340CTP4057ESP32-WROOM-32NCP167BMX330TBGFS312F-GFS8205

ESP-32-ruler bill of materials (BOM)

58 components, 32 distinct parts.

QtyPartRefs
1
CH340C
U1
1
TP4057
U2
1
ESP32-WROOM-32
U3
1
NCP167BMX330TBG
U4
1
FS312F-G
U5
1
FS8205
U6
2
NPN_S9013
Q1, Q2
1
NTA4151PT1G
Q3
1
MICRO_USB
J1
1
battery_3.7v
B1
1
SW_Push_boot
SW1
1
SW_Push_reset
SW2
1
ALPS SSSS811101
SW3
9
SW_Push
SW4, SW5, SW6, SW7, SW8, SW9, SW10, SW11 +1
1
OLED-128O064D
DS1
1
RLED
D1
2
LESD5D5.0CT1G
D2, D4
1
GLED
D3
1
1N4148W
D5
1
BAT760-7
D6
Show 12 more
QtyPartRefs
1
LED
D7
2
100nF
C1, C10
3
100nF/50V
C2, C5, C16
2
2.2uF
C3, C11
4
1uF
C4, C7, C8, C9
1
10uF
C6
1
22uF/10V
C14
6
10K
R1, R2, R4, R5, R8, R10
3
4K7
R3, R11, R12
1
390K
R6
3
1k
R7, R13, R14
1
100R
R9

ESP-32-ruler design files

The KiCad project lives in the rapha-tech/ESP-32-ruler repository on GitHub; these links point at the commit this page was built from.

ESP-32-ruler: common questions

What microcontroller does the ESP-32-ruler use?

The ESP-32-ruler is built around the ESP32-WROOM-32, from the ESP32 family.

How big is the ESP-32-ruler PCB?

The ESP-32-ruler measures 38 × 151.9 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the ESP-32-ruler?

58 components, from 32 distinct parts. The full bill of materials is listed on this page.

Where can I download the ESP-32-ruler design files?

From the rapha-tech/ESP-32-ruler repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the ESP-32-ruler design in my own project?

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

Can I test firmware for the ESP-32-ruler without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug ESP32 firmware against it before you order a PCB.

Earlier revisions in the repo: ruller_battery

Similar boards