H-BRIDGE
About the H-BRIDGE PCB
H-BRIDGE is an open source PCB design by Ondrak-123, published on GitHub. It is a 2-layer board measuring 57.8 × 39 mm, with 26 components from 12 distinct parts.
By type, the board carries 8 resistors, 6 transistors, 5 capacitors, 4 diodes, 2 connectors and 1 module.
From the project
H Bridge is a type of circuit that can be used to control speed and rotation of a DC motor, the speed is controlled with PWM (Pulse With Modulation), therefore it can be connected to a microcontroller like Arduino or ESP, if not the direction can be controlled for example by a bu
H Bridge is a type of circuit that can be used to control speed and rotation of a DC motor, the speed is controlled with PWM (Pulse With Modulation), therefore it can be connected to a microcontroller like Arduino or ESP, if not the direction can be controlled for example by a button. (Essentially, you use the H-bridge to choose the direction (forward/reverse) and the PWM signal to set the speed). What use does an H Bridge have?
H-BRIDGE bill of materials (BOM)
26 components, 12 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | Motor_DC | JST_NV_B02P-NV_1x02_P5.00mm_Vertical | M1 |
| 2 | IRFR9024N | TO-252-2 | Q1, Q5 |
| 2 | BC847 | SOT-23 | Q2, Q4 |
| 2 | IRLZ44N | TO-252-2 | Q3, Q6 |
| 1 | PWR_IN | JST_NV_B02P-NV_1x02_P5.00mm_Vertical | J1 |
| 1 | LOGIC_IN | PinHeader_1x04_P2.54mm_Vertical | J2 |
| 4 | SS34 | D_SMA | D1, D2, D3, D4 |
| 1 | 470uF | CP_Elec_10x10 | C1 |
| 4 | 100nF | C_0805_2012Metric | C2, C3, C4, C5 |
| 2 | 1K | R_0805_2012Metric | R1, R5 |
| 4 | 10K | R_0805_2012Metric | R2, R3, R7, R8 |
| 2 | 100R | R_0805_2012Metric | R4, R6 |
H-BRIDGE design files
The KiCad project lives in the Ondrak-123/H-BRIDGE repository on GitHub; these links point at the commit this page was built from.
- LayoutKiCad files/H Bridge.kicad_pcb
- SchematicKiCad files/H Bridge.kicad_sch
- BOMBOM/BOM.xlsx
H-BRIDGE: common questions
How big is the H-BRIDGE PCB?
The H-BRIDGE measures 57.8 × 39 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the H-BRIDGE?
26 components, from 12 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 H-BRIDGE design files?
From the Ondrak-123/H-BRIDGE 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 H-BRIDGE design in my own project?
The repository has no license, so all rights stay with Ondrak-123. Use it as a reference, and ask the author before reusing the design.