HardLabs

PMK Dongle HW01

PumaFPV·PMK·Hardware/PMK_Dongle/PMK_Dongle_HW01/PMK_Dongle_HW01.kicad_pcb

PMK Dongle HW01 PCB layout, top view — open source ESP32 board by PumaFPV

About the PMK Dongle HW01 PCB

PMK Dongle HW01 is an open source ESP32 PCB design by PumaFPV, published on GitHub under the MIT license. It is a 4-layer board measuring 10.4 × 15.4 mm, with 36 components from 20 distinct parts.

Its main chip is the ESP32-S2FH4, from the ESP32 family. Other key parts include the MIC5528-3.3YMT-T5. By type, the board carries 19 capacitors, 6 resistors, 3 inductors, 2 ICs, 2 switches and 1 crystal.

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 Dongle HW01, from the project README
From the project README

Main components on the PMK Dongle HW01

ESP32-S2FH4MIC5528-3.3YMT-T5

PMK Dongle HW01 bill of materials (BOM)

36 components, 20 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
ESP32-S2FH4
IC1
1
MIC5528-3.3YMT-T5
U1
1
CRYSTAL_GND24_SMALL
Crystal_GND24_Small
Y1
1
USB_A
J1
1
2450AT18A100E
ANT1
2
SKRPABE010
S1, S2
1
LED
D1
1
L
L1
1
2.7N
2.7n
L2
1
3.9N
3.9n
L3
2
2U2
2u2
C1, C2
2
15P
15p
C3, C4
9
100N
100n
C5, C6, C7, C8, C13, C14, C16, C17 +1
2
C
C9, C10
1
10U
10u
C11
2
1u
C12, C15
1
1p
C19
1
0
R1
1
2k
R2
4
10K
10k
R3, R4, R5, R6

PMK Dongle HW01 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 Dongle HW01: common questions

What microcontroller does the PMK Dongle HW01 use?

The PMK Dongle HW01 is built around the ESP32-S2FH4, from the ESP32 family.

How big is the PMK Dongle HW01 PCB?

The PMK Dongle HW01 measures 10.4 × 15.4 mm, has 4 copper layers and is 0.8012 mm thick.

How many components are on the PMK Dongle HW01?

36 components, from 20 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 Dongle HW01 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 Dongle HW01 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 Dongle HW01 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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