HardLabs

PMK 180mm

PumaFPV·PMK·Hardware/PMK_Keyboard/PMK_Keyboard_HW00/PMK_Keyboard.kicad_pcb

PMK 180mm PCB layout, top view — open source ESP32 board by PumaFPV

About the PMK 180mm PCB

PMK 180mm is an open source ESP32 PCB design by PumaFPV, published on GitHub under the MIT license. It is a 2-layer board measuring 181.7 × 172.3 mm, with 147 components from 37 distinct parts.

Its main chip is the ESP32-S2FH4, from the ESP32 family. Other key parts include the BQ24075RGTR, MIC5528-3.3YMT-T5 and SN74HC165PWR. By type, the board carries 43 diodes, 42 switches, 23 capacitors, 23 resistors, 9 ICs and 3 connectors.

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

From the project

PMK - Full wireless split keyboard

The goal is to make a suit of wireless devices such as "smart keyboard" (combined mouse and keyboard), gamepad, LEDs, knobs, display, etc The first step is to make a wireless split keyboard, and then we will see later...

Currently, you can connect up to 8 (software limited) devices per dongle, each of them having up to 8 (software limited) layers. Layers only affect keyboards and LED.

PMK 180mm, from the project README
From the project README

Main components on the PMK 180mm

BQ24075RGTRMIC5528-3.3YMT-T5ESP32-S2FH4SN74HC165PWR

PMK 180mm bill of materials (BOM)

147 components, 37 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
BQ24075RGTR
U201
2
MIC5528-3.3YMT-T5
U301, U302
1
ESP32-S2FH4
U401
5
SN74HC165PWR
U501, U502, U503, U504, U505
1
CRYSTAL_GND24_SMALL
Crystal_GND24_Small
Y601
1
USB4510-03-1-A
J101
1
CONN_01X08_FEMALE
Conn_01x08_Female
J401
1
CONN_01X03_SOCKET
Conn_01x03_Socket
J402
1
2450AT18A100E
ANT401
1
Battery_Cell
BT101
2
SKRPABE010
S401, S402
1
SW_Push
SW501
39
SW_Push
SW502, SW503, SW504, SW505, SW506, SW507, SW508, SW509 +31
3
LED
D201, D202, D401
40
YF923_2020_WS2812_LED
D601, D602, D603, D604, D605, D606, D607, D608 +32
1
L
L401
2
4U7
4u7
C201, C203
1
1u
C202
4
2U2
2u2
C301, C302, C303, C304
2
15P
15p
C401, C402
Show 17 more
QtyPartRefs
9
100N
100n
C403, C404, C405, C408, C411, C412, C414, C415 +1
2
C
C406, C407
1
10U
10u
C409
2
1u
C410, C413
2
5.1K
5.1k
R101, R102
1
0
R201
1
36K5
36k5
R202
1
590
R203
1
1K1
1k1
R204
2
1K5
1k5
R205, R206
1
100K
100k
R207
1
0k
R301
1
0
R401
1
2k
R402
2
10K
10k
R403, R404
4
nu
R405, R406, R407, R408
5
EXB-2HV103JV
RN501, RN502, RN503, RN504, RN505

PMK 180mm design files

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

PMK 180mm: common questions

What microcontroller does the PMK 180mm use?

The PMK 180mm is built around the ESP32-S2FH4, from the ESP32 family.

How big is the PMK 180mm PCB?

The PMK 180mm measures 181.7 × 172.3 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the PMK 180mm?

147 components, from 37 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the PMK 180mm design files?

From the PumaFPV/PMK repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the PMK 180mm design in my own project?

Yes, under the terms of its MIT license, which PumaFPV chose for the repository.

Can I test firmware for the PMK 180mm 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.

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