HardLabs

Main PS Board

zachrjt·digital-voltages-ps·main_board/main_board.kicad_pcb

Main PS Board layout, top view — open source AVR/Arduino board by zachrjt

About the Main PS Board

Main PS Board is an open source AVR/Arduino PCB design by zachrjt, published on GitHub. It is a 2-layer board measuring 85 × 94.5 mm, with 73 components from 53 distinct parts.

Its main chip is the ATtiny826-S, from the AVR/Arduino family. Other key parts include the 25LC640, INA180A1, MCP1501-12xSN, 74VHC1G14 and NCP164ASNADJT1G. By type, the board carries 22 capacitors, 12 resistors, 8 ICs, 8 diodes, 7 connectors and 3 inductors.

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

From the project

Fixed 3.3V and 5V voltage power supply with voltage and current readout

Main components on the Main PS Board

25LC640ATtiny826-SINA180A1MCP1501-12xSN74VHC1G14NCP164ASNADJT1GMAX809LTRG

Main PS Board bill of materials (BOM)

73 components, 53 distinct parts.

QtyPartRefs
1
25LC640
U1
1
ATtiny826-S
U2
2
INA180A1
U3, U4
1
MCP1501-12xSN
U5
1
74VHC1G14
U6
1
NCP164ASNADJT1G
U7
1
MAX809LTRG
U8
1
Screw_Terminal_01x03
J1
1
Conn
J2
2
Screw_Terminal_01x02
J3, J4
1
SPI
J5
1
UPDI
J6
1
EARTH JUMPER
J7
2
5A Slow
F2, F3
1
22MH
FL1
1
300V 1KA
GD1
1
~{WP}
JP1
1
IRQ_EN
JP2
1
LD05-23B03R2
PS1
1
LD05-23B05R2
PS2
Show 33 more
QtyPartRefs
2
30m
RShunt1, RShunt2
1
RESET
SW1
1
DISP. MODE
SW2
1
14D561KTR
VR1
2
M4
D1, D2
1
CDSOT23-T03
D3
2
CDSOT23-T05
D4, D5
2
SMBJ7.0A
D7, D9
1
Green LED
D8
2
MFBM1V3216-600-R
FB1, FB2
1
AIUR-06-122K
L1
5
100nF
C1, C3, C7, C9, C14
2
100nF
C2, C13
1
100pF
C4
2
1uF
C5, C6
2
0.33uF
C8, C12
1
2.2uF
C10
1
2.2nF
C11
1
10uF
C15
1
0.33uF
C16
2
1uF
C17, C18
2
0.1uF
C19, C20
2
220uF
C21, C22
2
1.6k
R1, R2
1
330
R3
1
10k
R4
2
1k
R5, R9
1
316k
R6
1
97.6k
R7
1
33
R8
1
1.5M
R10
1
2K
RN1
1
33
RN2

Main PS Board design files

The KiCad project lives in the zachrjt/digital-voltages-ps repository on GitHub; these links point at the commit this page was built from.

Main PS Board: common questions

What microcontroller does the Main PS Board use?

The Main PS Board is built around the ATtiny826-S, from the AVR/Arduino family.

How big is the Main PS Board?

The Main PS Board measures 85 × 94.5 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Main PS Board?

73 components, from 53 distinct parts. The full bill of materials is listed on this page.

Where can I download the Main PS Board design files?

From the zachrjt/digital-voltages-ps repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Main PS Board design in my own project?

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

Can I test firmware for the Main PS Board 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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