HardLabs

Robust io.before j20silk

lusher00·Robust-IO·_claude_scratch/robust-io.before-j20silk.kicad_pcb

Robust io.before j20silk PCB layout, top view — open source AVR/Arduino board by lusher00

About the Robust io.before j20silk PCB

Robust io.before j20silk is an open source AVR/Arduino PCB design by lusher00, published on GitHub under the Custom license license. It is a 4-layer board measuring 160 × 100 mm, with 259 components from 66 distinct parts.

Its main chip is the ATMEGA1284P-A, from the AVR/Arduino family. Other key parts include the DRV8876, MCP2515, TPS5604, MCP2562-E-MF and MC33978. By type, the board carries 97 resistors, 73 capacitors, 48 diodes, 13 connectors, 12 ICs and 7 fuses.

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

From the project

Rugged industrial I/O board in KiCad — ATmega1284P, CAN, isolated I/O, high-side switches, and motor drivers. Schematic complete, PCB routing in progress.

A rugged industrial I/O board designed in KiCad 10.

- Rev A: released to fabrication on 2026-10-05 (JLCPCB, 5 bare boards, 2 assembled). Not yet powered or tested. - Schematic: complete across four hierarchical sheets. ERC clean. - PCB layout: fully routed. DRC reports 0 errors and 4 library-mismatch warnings (J20, U1, U14, U7), which are intentional local footprint edits.

Robust io.before j20silk, from the project README
From the project README

Main components on the Robust io.before j20silk

DRV8876ATMEGA1284P-AMCP2515TPS5604MCP2562-E-MFMC33978BTS7008

Robust io.before j20silk bill of materials (BOM)

259 components, 66 distinct parts — part numbers from the project's BOM.

QtyPartRefs
2
DRV8876
TI(德州仪器)
U1, U14
1
ATMEGA1284P-A
ATmega1284P-A
U2
1
MCP2515
U3
2
TPS5604
U4, U5
1
MCP2562-E-MF
U6
1
MC33978
NXP(恩智浦)
U7
4
BTS7008
Infineon(英飞凌)
U8, U9, U10, U11
2
2N7002
Q3, Q4
1
16MHZ
16MHz
Y1
1
12MHZ
12MHz
Y2
1
AVR-ISP-6
J1
3
Screw_Terminal_01x06
J3, J5, J6
2
Screw_Terminal_01x04
J4, J15
5
Screw_Terminal_01x06
J9, J10, J16, J18, J19
1
Screw_Terminal_01x04
J14
1
UART
J20
1
10-20A
F1
6
Polyfuse
F2, F3, F4, F6, F7, F8
1
CHS-01TB
SW1
1
B3U-1000P
SW2
Show 46 more
QtyPartRefs
2
BAT54C
D1, D3
8
B560C
D2, D4, D8, D9, D10, D11, D12, D13
1
BZX384C6V8
D5
1
SMDJ24A
D6
1
B340
D7
32
LED
D14, D15, D16, D17, D18, D19, D20, D21 +24
2
1N4148W
D44, D46
1
SP0502BAHT
D48
1
CB2016T6R8M
6.8uH
L1
1
18UH
18uH
L2
1
10UH
10uH
L3
4
22PF
22pF
C1, C2, C11, C12
2
C377773
2.2uF
C3, C6
17
C14663
.1uF
C4, C7, C48, C49, C51, C57, C58, C59 +9
2
22UF
22uF
C5, C8
33
C14663
.1uF
C9, C10, C13, C14, C15, C18, C20, C21 +25
1
1NF
1nF
C16
1
C440198
10uF 50V
C17
1
1NF
1n
C19
2
100uF 50V
C44, C45
1
C377773
2.2uF 50V
C46
1
.1uF 50V
C47
2
22NF
22nF
C50, C53
2
C14663
100nF 16V
C52, C54
2
C14663
100nF 50V
C55, C56
2
10NF
10nF
C69, C70
5
10K
10k
R1, R7, R28, R29, R53
1
120
R2
1
51K
51k
R3
2
22.1K
22.1k
R4, R6
1
88.7K
88.7k
R5
3
330
R8, R93, R97
17
4.7K
4.7k
R9, R10, R11, R12, R13, R14, R15, R16 +9
1
750
R25
1
4.7K
4.7k
R27
1
1k
R30
22
100
R31, R32, R33, R34, R35, R36, R37, R38 +14
1
16.2k 1%
R54
1
10k 1%
R55
2
1.5k 1%
R56, R57
2
NP
R58, R60
2
0
R59, R61
22
2.2K
2.2k
R62, R63, R64, R65, R66, R67, R68, R69 +14
8
2.2K
10k
R84, R85, R86, R87, R88, R89, R90, R91
2
100K
100k
R92, R95
2
1k
R98, R99

Robust io.before j20silk design files

The KiCad project lives in the lusher00/Robust-IO repository on GitHub; these links point at the commit this page was built from.

Robust io.before j20silk: common questions

What microcontroller does the Robust io.before j20silk use?

The Robust io.before j20silk is built around the ATMEGA1284P-A, from the AVR/Arduino family.

How big is the Robust io.before j20silk PCB?

The Robust io.before j20silk measures 160 × 100 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the Robust io.before j20silk?

259 components, from 66 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 Robust io.before j20silk design files?

From the lusher00/Robust-IO repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.

Can I use the Robust io.before j20silk 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 Robust io.before j20silk 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.

More boards in Robust-IO

Similar boards