HardLabs

Motherboard23-24

RoanTractor·Tractor-Team-EL·2023-2024 Main Board/Motherboard23-24/Motherboard23-24.kicad_pcb

Motherboard23-24 PCB layout, top view — open source AVR/Arduino board by RoanTractor

About the Motherboard23-24 PCB

Motherboard23-24 is an open source AVR/Arduino PCB design by RoanTractor, published on GitHub. It is a 2-layer board measuring 230 × 125 mm, with 78 components from 24 distinct parts.

Its main chip is the ARDUINO_PRO_MINI, from the AVR/Arduino family. Other key parts include the CD4081BE and CD4069UBE. By type, the board carries 33 resistors, 22 connectors, 7 diodes, 5 ICs, 5 fuses and 3 capacitors.

From the project

Tractor team electrical , experts in killing electrical gremlins and using black powder.

Things Staying the same Safety Circuit - Not Touching That Safety Start - Not Touching That

Minor adjustments to Throttle Control Steering Control

Layout Changes Bigger Board (more height, same length)

5V goes through diode to prevent the 5v and GND being swapped and messing things up goes through thermistor to prevent spikes of current Zener Diode prevents overvoltage (over 5.1V)

Main components on the Motherboard23-24

ARDUINO_PRO_MINICD4081BECD4069UBE

Motherboard23-24 bill of materials (BOM)

78 components, 24 distinct parts — part numbers from the project's BOM.

QtyPartRefs
3
ARDUINO_PRO_MINI
U1, U2, U5
1
CD4081BE
U3
1
CD4069UBE
U4
2
Q_NMOS_GDS
Q1, Q2
2
Conn_01x06_Pin
J1, J19
7
Conn_01x02_Male
J2, J3, J5, J6, J9, J17, J21
2
Conn_01x03_Male
J4, J14
2
Conn_01x03_Pin
J7, J23
1
Conn_01x08_Male
J8
1
Conn_01x04_Male
J10
1
Conn_01x06_Male
J11
4
VCF4-1000
J12, J13, J15, J16
2
Conn_01x02_Pin
J18, J24
5
3568
F1, F2, F3, F4, F5
1
Thermistor
TH2
5
LED
D1, D2, D3, D4, D5
1
DIODE
D8
1
D_Zener
D9
3
0.1µF
C1, C2, C3
18
1k
R1, R2, R3, R4, R5, R6, R7, R8 +10
Show 4 more
QtyPartRefs
12
10k
R12, R13, R14, R15, R16, R17, R18, R26 +4
1
330
R25
1
100k
R29
1
4.7k
R30

Motherboard23-24 design files

The KiCad project lives in the RoanTractor/Tractor-Team-EL repository on GitHub; these links point at the commit this page was built from.

Motherboard23-24: common questions

What microcontroller does the Motherboard23-24 use?

The Motherboard23-24 is built around the ARDUINO_PRO_MINI, from the AVR/Arduino family.

How big is the Motherboard23-24 PCB?

The Motherboard23-24 measures 230 × 125 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Motherboard23-24?

78 components, from 24 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 Motherboard23-24 design files?

From the RoanTractor/Tractor-Team-EL repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the Motherboard23-24 design in my own project?

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

Can I test firmware for the Motherboard23-24 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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