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The Dagu mini driver board is a great low cost option for controlling a mobile robot. This is an Arduino compatible board that also includes 2 H bridges capable of driving either 2 DC motors with a stall current of 2.5A, or 1 stepper motor with a peak current of 2.5A per winding. On top of that, it also has pins for driving up to 8 servo motors, and a port to connnect a Bluetooth or Xbee module.
Features
To use this board with Windows you'll need to download and install the drivers here
Tutorial showing how to get started with the Mini Driver
Posted by charles.conway@outlook.com on 6th Mar 2015
Loving this little board, with so many uses! Currently using it to 'robotise' a previously broken hamster toy of my daughter's!
Posted by jim martel on 17th Jun 2014
I bought two of these to be the heart of a 4WD Wifi Robot to be built. One for prototyping code and one in Robot. No need to disassembly to test. Cost is good to have two on hand
Posted by ChrisJ on 7th Feb 2014
It's as close to a 'Plug and Play' robot board as your likely to get, for the small price you get effectively a Nano with an FET H Bridge motor controller, a Blutooth port, power lines alongside the DIO ports, servos and sensors just plug strait in.
A couple of small geared motors and you have all the control sorted for your robot leaving you to concentrate on the mechanics.
Line followers, edge detectors, photovore, wanderer with obstacle avoidance, are all easily implimented, small enough for a micro robot for Sumo. With the built in Bluetooth port and you can add control to your creation with an Android App from your mobile phone or Tablet.
And all for a 'pocket money' price.
Posted by MIchael. on 15th Nov 2013
In the past I used to use a faraduino to connect a couple of servos and motors to a microcontroller - since like the Dagu that was an integrated board. However that was discontinued and I've been looking for a suitable replacement since.
The fact you can power a few servos and a motor using this is really excellent, and while it IS a smaller CPU than the one you'll often find in an Arduino (8K Flash, 1K Ram), it can be programmed cleanly using the normal tools, and it's serial interface works properly over USB too, which is really useful for the sort of things I do.
Rather than think of it as a smaller arduino (which it is), it's perhaps worth comparing it to a servo controller but with more intelligence, more flexible and with the ability to control a couple of "normal" motors too.
For reference, this works correctly with the board setting of "Arduino NG or w/ATmega 8"