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H-bridge

Mohamed-U3·H-bridge-PCB

H-bridge PCB layout, top view — open source AVR/Arduino board by Mohamed-U3

About the H-bridge PCB

H-bridge is an open source AVR/Arduino PCB design by Mohamed-U3, published on GitHub under the MIT license. It is a 2-layer board measuring 97 × 50 mm, with 47 components from 28 distinct parts.

Its main chip is the ATmega328P-A, from the AVR/Arduino family. Other key parts include the IR2110, LM7815_TO220 and LM7805_TO220. By type, the board carries 12 diodes, 9 capacitors, 7 connectors, 7 resistors, 5 ICs and 4 transistors.

From the project

H-bridge with MOSFETs and IR2110 designed with KiCAD

A professional H-bridge motor driver PCB designed for bidirectional DC motor control with 24V power supply and microcontroller-based control interface.

This H-bridge circuit board enables bidirectional control of DC motors with overcurrent protection, isolated gate drivers, and integrated power regulation. The design features high-current MOSFETs capable of handling significant motor loads with proper heat dissipation.

H-bridge, from the project README
From the project README

Main components on the H-bridge

IR2110LM7815_TO220ATmega328P-ALM7805_TO220

H-bridge bill of materials (BOM)

47 components, 28 distinct parts.

QtyPartRefs
2
IR2110
U1, U2
1
LM7815_TO220
U3
1
ATmega328P-A
U4
1
LM7805_TO220
U5
4
IRLZ44N
Q1, Q2, Q3, Q4
1
16MHz
Y1
1
Fan
J1
2
5v Output
J2, J6
1
Motor Terminal
J3
1
24v Power Input
J4
1
Control
J5
1
ICSP
J7
1
Heatsink
HS1
1
SW_SPST
SW1
2
1N4007
D1, D10
4
1N4148
D2, D3, D8, D9
4
1N5245A
D4, D5, D6, D7
2
LED
D11, D12
3
1uF
C1, C2, C7
1
2200uF
C3
Show 8 more
QtyPartRefs
1
10uF
C4
1
0.1uF
C5
1
100nF
C6
2
22pF
C8, C9
4
10
R1, R2, R3, R4
1
1k
R5
1
10k
R6
1
330
R7

H-bridge design files

The KiCad project lives in the Mohamed-U3/H-bridge-PCB repository on GitHub; these links point at the commit this page was built from.

H-bridge: common questions

What microcontroller does the H-bridge use?

The H-bridge is built around the ATmega328P-A, from the AVR/Arduino family.

How big is the H-bridge PCB?

The H-bridge measures 97 × 50 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the H-bridge?

47 components, from 28 distinct parts. The full bill of materials is listed on this page.

Where can I download the H-bridge design files?

From the Mohamed-U3/H-bridge-PCB repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the H-bridge design in my own project?

Yes, under the terms of its MIT license, which Mohamed-U3 chose for the repository.

Can I test firmware for the H-bridge 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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