HardLabs

PiSupply

enwi·PiSupply·pcb/PiSupply.kicad_pcb

PiSupply PCB layout, top view — open source AVR/Arduino board by enwi

About the PiSupply PCB

PiSupply is an open source AVR/Arduino PCB design by enwi, published on GitHub under the LGPL-3.0 license. It is a 2-layer board measuring 65 × 56.5 mm, with 67 components from 43 distinct parts.

Its main chip is the ATTINY45-20SU, from the AVR/Arduino family. Other key parts include the MT3608, CEG8205A, TP4056, DW01-P and MP1584. By type, the board carries 20 resistors, 15 capacitors, 8 connectors, 8 diodes, 6 ICs and 4 transistors.

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

From the project

Uninterruptable power supply for Raspberry Pi's, which can also power external HDDs

Main components on the PiSupply

ATTINY45-20SUMT3608CEG8205ATP4056DW01-PMP1584

PiSupply bill of materials (BOM)

67 components, 43 distinct parts.

QtyPartRefs
1
ATTINY45-20SU
U1
1
MT3608
U2
1
CEG8205A
U3
1
TP4056
U4
1
DW01-P
U5
1
MP1584
U6
3
SI3443DDV
Q1, Q2, Q3
1
Q_NPN_BEC
Q4
1
USB_OTG
J1
1
Barrel_Jack
J2
3
CONN_01X02
J3, J4, J5
1
USB_A
J7
1
Raspberry_Pi_2_3
J8
1
Raspberry_Pi_2_3
J9
1
Battery_Cell_THT
BT1
1
Battery_Cell_THT
BT2
1
NANOSMD400LR-C-2
F1
1
10 k pot TC33X-2-103E
RV1
1
LED Red
D1
3
SS34
D2, D4, D5
Show 23 more
QtyPartRefs
2
LED Green
D3, D7
1
LED Blue
D6
1
SS34 DO214AC 1N5822
D8
1
4.7µH - CDRH104R
L1
1
4.7µH
L2
5
10µF
C1, C2, C6, C7, C11
4
100µF
C3, C4, C5, C15
3
0.1µF
C8, C9, C10
1
150pF
C12
1
100nF
C13
1
22µF
C14
1
1k5
R1
5
10k
R2, R3, R4, R18, R19
3
1k
R5, R10, R20
1
47k
R6
1
6.2k
R7
1
1k2
R8
1
100
R9
2
1.5k
R11, R12
2
100k
R13, R14
1
40.2k
R15
1
221k
R16
1
5.6k
R17

PiSupply design files

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

PiSupply: common questions

What microcontroller does the PiSupply use?

The PiSupply is built around the ATTINY45-20SU, from the AVR/Arduino family.

How big is the PiSupply PCB?

The PiSupply measures 65 × 56.5 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the PiSupply?

67 components, from 43 distinct parts. The full bill of materials is listed on this page.

Where can I download the PiSupply design files?

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

Can I use the PiSupply design in my own project?

Yes, under the terms of its LGPL-3.0 license, which enwi chose for the repository.

Can I test firmware for the PiSupply without the hardware?

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

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