HardLabs

H-THING

Arrakark·H-THING

H-THING PCB layout, top view — open source board by Arrakark

About the H-THING PCB

H-THING is an open source PCB design by Arrakark, published on GitHub under the MIT license. It is a 2-layer board measuring 44.6 × 31 mm, with 18 components from 11 distinct parts.

By type, the board carries 6 transistors, 5 resistors, 4 connectors and 3 capacitors.

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

From the project

An h-bridge circuit for ENPH 253 robot lab

An H-Bridge circuit for controlling a single robot motor.

5V - 17V motor voltage range To be used with <1000Hz switching freqnuency (500Hz is preferred) Supports 3.3v and 5.0v logic level inputs Capable of driving up to 3A Requires only one PWM pin for speed, one digial I/O for direction Can be used as a half-bridge if direction pin is disconnected Has space for a current-sensing resistor (R6) Cannot be used to coast the motor

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

H-THING bill of materials (BOM)

18 components, 11 distinct parts — part numbers from the project's BOM.

QtyPartRefs
2
2N3904
Q1, Q6
2
IRF5305
Q2, Q4
2
HUF75321
Q3, Q5
1
MOTOR_CON
J1
1
PWR_PASSTHRU
J2
1
MAIN_PWR
J3
1
SIG_CON
J4
2
100nF
C1, C3
1
470uF
C2
4
1k00
R1, R2, R4, R5
1
0R20
R6

H-THING design files

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

H-THING: common questions

How big is the H-THING PCB?

The H-THING measures 44.6 × 31 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the H-THING?

18 components, from 11 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-THING design files?

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

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

Yes, under the terms of its MIT license, which Arrakark chose for the repository.

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