HardLabs

ESPesh

Charlio99·ESPesh·Hardware/ESPesh.kicad_pcb

ESPesh PCB layout, top view — open source RP2040/RP2350 board by Charlio99
Simulate this board

About the ESPesh PCB

ESPesh is an open source RP2040/RP2350 PCB design by Charlio99, published on GitHub under the CC-BY-NC-4.0 license. It is a 2-layer board measuring 25.4 × 25.4 mm, with 36 components from 26 distinct parts.

Its main chip is the ESP32-PICO-D4, from the RP2040/RP2350 family. Other key parts include the FDN340P, SPX3819M5-L-3-3, SL4054ST25P, XB6566H0 and HDC1080. By type, the board carries 10 resistors, 8 capacitors, 6 ICs, 6 diodes, 1 antenna and 1 inductor.

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

From the project

One inch ESP32 PCB designed for low power IoT applications.

ESPesh is a super tiny board designed for IoT applications. My plan is to use it as a BLE Mesh for IoT sensors and switches, because with BLE the power consumption is less than 1mA.

- ESP32-PICO-D4 - Low power design (LDO, removed unnecessary components) - Only one inch PCB - USB C (only for power, not programming) - LiPO battery (with charger and voltage protections) - Some GPIOs exposed (I2C included)

ESPesh, from the project README
From the project README

Main components on the ESPesh

ESP32-PICO-D4FDN340PSPX3819M5-L-3-3SL4054ST25PXB6566H0HDC1080

ESPesh bill of materials (BOM)

36 components, 26 distinct parts.

QtyPartRefs
1
ESP32-PICO-D4
IC1
1
FDN340P
IC3
1
SPX3819M5-L-3-3
U1
1
SL4054ST25P
U2
1
XB6566H0
U3
1
HDC1080
U4
2
Conn_01x01
3V3, IO1
1
PRO-OB-440
ANT1
1
LIR2450
BATT1
1
HRO-TYPE-C-31-M-12
USB1
1
LED
D1
1
MBR0520
D3
4
Conn_01x01
D18, D21, D22, D25
1
1.6nH
L1
3
0.1uF
C1, C4, C8
1
2.7pF
C2
1
4.7pF
C3
2
10uF
C5, C6
1
10uF
C7
2
10K
R1, R2
Show 6 more
QtyPartRefs
2
6.8K
R3, R4
1
2K
R5
2
5K1
R6, R7
1
43K
R8
1
100
R9
1
100K
R10

ESPesh design files

The KiCad project lives in the Charlio99/ESPesh repository on GitHub; these links point at the commit this page was built from.

ESPesh: common questions

What microcontroller does the ESPesh use?

The ESPesh is built around the ESP32-PICO-D4, from the RP2040/RP2350 family.

How big is the ESPesh PCB?

The ESPesh measures 25.4 × 25.4 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the ESPesh?

36 components, from 26 distinct parts. The full bill of materials is listed on this page.

Where can I download the ESPesh design files?

From the Charlio99/ESPesh repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the ESPesh design in my own project?

It is published under CC-BY-NC-4.0, which limits how it may be reused; read the license before building on it.

Can I test firmware for the ESPesh without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug RP2040/RP2350 firmware against it before you order a PCB.

Similar boards