A very compact dual channel H-bridge motor driver module. The module incorporates two L9110S H-bridge driver IC's to allow either one stepper or two DC motors to be independently controlled. The module can accept a supply voltage between 2.5 to 12V allowing for motors within this supply range to be controlled safely from a standard microcontroller. Maximum drive current is 800mA. 0.1" pitch header pins allow for direct connection to a microcontoller such as an Arduino requiring just two digital pins per DC motor for control in both directions. Screw terminal blocks provide convenient connection to the motors(s).





- Dual L9110S chipset motor driver
- Input voltage: 2.5V~12V
- Current: 800mA
- Can drive two DC motors, and a 4-wire 2-phase stepper motor

Can anyone tell me why I cannot get this stepper motor to step in both directions. I have wired it up to Arduino as per description in the Arduino Project Book and used the example sketches in the Stepper library Module. I can only get the motor to step in one direction. Anyone suggest what I may have overlooked. ? The description in the store entry definitely states it is capable of both direction movements.

The L9110S is capable of driving a motor in both directions but the way you use it is dependent on the type of motor you have connected to it. Do you know what type of motor you are using? Is it a DC motor or a stepper motor? If you're not sure do you have a model name or part number for it? Also what Arduino code are you using to drive the module?

Hi Andrew. Many thanks for quick reply, but you obviously did not look at the title of my post. I was referring to the HCARDU0035 which you sell. I posted my query in this forum as I could find a forum dealing with this module. Reading the description of it in your sales pages it distinctly says it can rotate forward and backward, but using the example sketches from the Arduino libraries when using the programming software downloaded from Arduino software I could not get the stepper motor to run in reverse. If you know of any other suitable software sites I would be grateful.

The correct product thread for that motor is under Robotics / Mechanical -> Motors & Servos

Here is a direct link to get to it:

viewtopic.php?f=93&t=1323

In the first post you will find an example sketch which shows how to correctly control it. It's simply a case of pulsing each of the 4 controllers pins in turn. The direction in which you pulse the pins determines the direction in which the motor turns. The Arduino stepper motor example will not work with that item as it was written for a different type of controller.

Just for future reference, if you have trouble finding the correct forum thread just use the forum search feature and do a search using the product code. Most of our items have a product thread associated with them but there may be one or two we have missed so if you still can't find the correct thread just post in the general discussion area. Nothing is off topic there

Many thanks Andrew I will look at that forum that have mentioned.