Update:
The more I use this board, the more I love it. It's been resilient to my own wiring errors, responsive across the PWM range, and tolerant of varied input voltages. I haven't yet had any functional issues that weren't of my own making! Bumped from 4 to 5 stars.
Original review:
This little board is fantastic for driving motors from microcontrollers. I'm using it to drive several Lego "power functions" motors (~500ma max current) from an Arduino, using a 9V power brick to supply the driver, and it performs beautifully, consuming only ~20 microamps (NOT milliamps) from the 5V signal pin. Voltage at the output is ~2V less than supply, as is common w/ H-Bridge drivers, so you may need to compensate by using a higher supply voltage, or just plan for reduced maximum power.
Connection-wise, the ground pin is a common ground. The 12V pin can accept a wide range (7-30V) input. The 5V pin is powered by the voltage regulator on-board, and can supply power (I measured 5.06V) to other devices, or be used to tie an input high. In each input pin pair, pull one high, one low to drive the motor.
The screw connectors were a little tight, but worked well once I got them moving. The connections and heatsinks all seemed solidly connected, and the board has through holes for affixing it to a base.
These are a great deal the hobby robotics / electronics experimentation, and are very forgiving with respect to power supply.
| Manufacturer | AITRIP |
|---|---|
| Item Weight | 3.52 ounces |
| Package Dimensions | 6.1 x 4.61 x 1.5 inches |
| Color | 4PACK |
| Voltage | 24 Volts |
| Batteries Included? | No |
| Batteries Required? | No |
