HardLabs

PSU

ThomasVDD·SmartSupplyMini·PCB/PSU_PCB.kicad_pcb

PSU PCB layout, top view — open source AVR/Arduino board by ThomasVDD

About the PSU PCB

PSU is an open source AVR/Arduino PCB design by ThomasVDD, published on GitHub under the Custom license license. It is a 2-layer board measuring 50 × 100 mm, with 116 components from 60 distinct parts.

Its main chip is the ATMEGA32U4RC-A, from the AVR/Arduino family. Other key parts include the OPA2170, USB_TYPE_C, MCP41010, LT1370 and MAX6610. By type, the board carries 56 resistors, 28 capacitors, 11 ICs, 11 diodes, 4 connectors and 2 transistors.

Main components on the PSU

OPA2170USB_TYPE_CATMEGA32U4RC-AMCP41010LT1370MAX6610OPA4170INA219MCP1252LT3080LM334M

PSU bill of materials (BOM)

116 components, 60 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
OPA2170
U1
1
USB_TYPE_C
U2
1
ATMEGA32U4RC-A
U3
1
MCP41010
U4
1
LT1370
U5
1
MAX6610
U6
1
OPA4170
U7
1
INA219
U8
1
MCP1252
U9
1
LT3080
U10
1
LM334M
U11
1
IRLML0030TRPBF
Q1
1
IRLML0030TRPBF
Q2
1
16MHZ
16Mhz
Y1
1
Bluetooth HM-10
P1
1
ISP
P2
1
V+
P3
1
V-
P4
1
FUSE 3A
F1
1
SW_PUSH_SMALL_H
SW1
Show 40 more
QtyPartRefs
1
SS34
D1
1
1N4148
D2
3
1N4148
D3, D10, D11
1
SM4007PL-TP
D4
1
LED_X2
Led_x2
D5
1
Led_x2
D6
1
DZ2W27000L
D7
2
LED
D8, D9
1
47U
47u
L1
1
22P
22p
C1
1
22p
C2
13
100n
C4, C5, C6, C8, C11, C13, C15, C16 +5
1
100U
220u
C7
1
47N
47n
C9
1
22U
22u
C10
1
220u
C12
1
22u
C14
2
22u
C17, C27
1
100u
C18
1
1u
C21
1
22U
22u
C22
2
22u
C25, C26
1
4.7N
4.7n
C28
1
620R
R1
6
620R
R2, R3, R4, R18, R44, R45
8
12k 0.1%
R5, R6, R30, R34, R36, R42, R47, R48
10
3k 0.1%
R7, R8, R27, R28, R29, R31, R35, R43 +2
1
22R
R9
1
22R
R10
1
10K
10k
R11
1
5K1
5k1
R12
6
5k1
R13, R16, R17, R53, R54, R55
11
10k
R14, R19, R23, R25, R26, R32, R37, R38 +3
4
1k
R15, R33, R39, R40
1
2.2K
2.2k
R20
1
10R
R21
1
0R5 1W
R22
1
10R
R24
1
100R
R41
1
100R
R46

PSU design files

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

PSU: common questions

What microcontroller does the PSU use?

The PSU is built around the ATMEGA32U4RC-A, from the AVR/Arduino family.

How big is the PSU PCB?

The PSU measures 50 × 100 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the PSU?

116 components, from 60 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 PSU design files?

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

Can I use the PSU design in my own project?

It is published under Custom license, which limits how it may be reused; read the license before building on it.

Can I test firmware for the PSU 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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