HardLabs

Power supply

kuellenberg·7-Segment-RGB-Clock·Power_Supply Rev. A/Power supply.kicad_pcb

Power supply PCB layout, top view — open source AVR/Arduino board by kuellenberg

About the Power supply PCB

Power supply is an open source AVR/Arduino PCB design by kuellenberg, published on GitHub. It is a 2-layer board measuring 180.7 × 180.7 mm, with 48 components from 40 distinct parts.

Its main chip is the ATMEGA328P-AU-AK, from the AVR/Arduino family. Other key parts include the FT232RL and DS3231M. By type, the board carries 14 capacitors, 13 resistors, 7 diodes, 3 ICs, 2 transistors and 2 connectors.

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

Power supply, from the project README
From the project README

Main components on the Power supply

FT232RLATMEGA328P-AU-AKDS3231M

Power supply bill of materials (BOM)

48 components, 40 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
FT232RL
LM1084-12
U1
1
ATMEGA328P-AU-AK
LM1084-5
U2
1
DS3231M
NE555P
U3
1
SI4435FDY
BC548
Q1
1
SI4435FDY
MCR72
Q2
1
CONN_02X04_ODD_EVEN
Screw_Terminal_01x04
J1
1
CONN_01X02
Conn_01x04
J2
1
D_Bridge_+AA-
BR1
1
576-0154004.DRT
6A
F1
1
Heatsink
HS1
1
RY611012
K1
1
5R
TH1
2
LED
LD1, LD2
1
859-LTSTC193TBKT5A
1N5819
D1
1
SS1P3L
12V
D3
1
…
1N4148
D5
1
…
1N5819
D6
1
859-LTST-C190KGKT
1N4148
D7
1
859-LTST-C190KRKT
4V7
D8
1
SS1P3L
1N4148
D9
Show 20 more
QtyPartRefs
2
330UF
4700uF
C1, C2
1
10NF
4700uF
C3
1
100UF
4700uF
C4
1
100UF
10uF
C5
1
10NF
10uF
C6
4
100NF
100nF
C7, C10, C12, C13
1
100NF
10uF
C8
2
4U7
10uF
C9, C11
1
10NF
100nF
C14
2
100R
R1, R5
2
470R
R2, R6
1
330k
R3
1
100k
R4
1
10k
R7
1
4K7
560R
R8
1
4K7
180R
R9
1
LDR07
0R
R10
1
10K
0R
R11
1
10K
DNP
R12
1
330R
DNP
R13

Power supply design files

The KiCad project lives in the kuellenberg/7-Segment-RGB-Clock repository on GitHub; these links point at the commit this page was built from.

Power supply: common questions

What microcontroller does the Power supply use?

The Power supply is built around the ATMEGA328P-AU-AK, from the AVR/Arduino family.

How big is the Power supply PCB?

The Power supply measures 180.7 × 180.7 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Power supply?

48 components, from 40 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 Power supply design files?

From the kuellenberg/7-Segment-RGB-Clock repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.

Can I use the Power supply design in my own project?

The repository has no license, so all rights stay with kuellenberg. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Power supply 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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