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OpenPEMF

openPEMF·openPEMF

OpenPEMF PCB layout, top view — open source RP2040/RP2350 board by openPEMF

About the OpenPEMF PCB

OpenPEMF is an open source RP2040/RP2350 PCB design by openPEMF, published on GitHub under the MIT license. It is a 4-layer board measuring 49.7 × 99.8 mm, with 113 components from 39 distinct parts.

Its main chip is the C2040, from the RP2040/RP2350 family. Other key parts include the C6961, C32565, C97521, C6186 and C87080. By type, the board carries 46 capacitors, 25 resistors, 18 diodes, 8 ICs, 8 connectors and 5 transistors.

From the project

Open Source PEMF Hardware and Firmware

Open source PEMF project that includes the hardware and firmware for anyone looking to build their own PEMF device

- Aren't there already some open source PEMF projects? Yes, but many of them do not create the same fields used in the majority of published PEMF parameters. Most of them also have switching characteristics that cause spurious spike and oscillations that could be considered "dirty electricity"

Main components on the OpenPEMF

C6961C32565C2040C97521C6186C87080C7593

OpenPEMF bill of materials (BOM)

113 components, 39 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
C6961
TL072
U2
2
C32565
EL3H7BTA-VG
U3, U5
1
C2040
RP2040
U6
1
C97521
W25Q128JVS
U7
1
C6186
AMS1117-3.3
U8
1
C87080
LMR16006
U9
1
C7593
NE555DR
U10
4
C538034
Q_NMOS_GDS
Q1, Q2, Q3, Q4
1
C2585
Q_PMOS_GDS
Q5
1
C9002
12Mhz
Y1
1
C430601
Screw_Terminal_01x02
J2
1
Conn_01x04_Pin
J3
1
Conn_01x08_Pin
J4
2
Conn_01x03_Pin
J5, J7
1
C132563
USB_B_Micro
J8
1
Conn_01x02_Pin
J9
1
C720558
Barrel_Jack_Switch
J10
1
C206917
0154005.DRT
F1
6
C83152
BAT46W-7-F
D1, D2, D16, D17, D21, D22
6
C2982194
5.6
D3, D4, D14, D15, D18, D19
Show 19 more
QtyPartRefs
4
C2693410
D_AAK
D5, D6, D7, D23
1
C173507
SMAJ54CA
D8
1
C14996
D_Schottky
D20
1
C341070
100u
L1
9
C915351
1n_250V
C1, C4, C5, C11, C12, C14, C34, C39 +1
17
C307331
100n
C2, C3, C15, C16, C17, C18, C19, C20 +9
6
C577211
2.2u
C6, C26, C28, C29, C43, C44
5
C340709
470u_100V
C7, C8, C9, C10, C13
6
C29823
4.7u
C27, C30, C31, C32, C37, C38
1
C28233
100n
C33
2
C541436
36pf
C45, C46
6
C21190
1k
R1, R2, R7, R8, R14, R18
3
C17471
150
R3, R12, R13
3
C25076
100
R4, R11, R25
4
C172043
27.4
R5, R9, R15, R16
4
C25803
100k
R6, R10, R19, R23
3
C25804
10k
R17, R21, R22
1
C22935
1Meg
R20
1
C23212
6.8k
R24

OpenPEMF design files

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

OpenPEMF: common questions

What microcontroller does the OpenPEMF use?

The OpenPEMF is built around the C2040, from the RP2040/RP2350 family.

How big is the OpenPEMF PCB?

The OpenPEMF measures 49.7 × 99.8 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the OpenPEMF?

113 components, from 39 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 OpenPEMF design files?

From the openPEMF/openPEMF 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 OpenPEMF design in my own project?

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

Can I test firmware for the OpenPEMF 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.

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