Archive for category: Experiments

  • NXT Connector Breadboard Hack

    Experiments July 1, 2008 17:26 no comments

    To the left are the fruits of about an hour’s worth of hack-sawing, soldering and hot gluing.  If you can’t see from the pictures what it is, let me explain.  It’s one of the Mindsensors NXT connectors attached to a cut-to-size prototype copper strip board.  It’s not the prettiest thing […]

     
  • Motor Control with the Mindsensors PCF8574A

    Motor Control with the Mindsensors PCF8574A

    Experiments, Sensors June 30, 2008 09:20 no comments

    The Mindsensors PCF8574A board is not just suitable for making das Blinkenlights but also for controlling other ICs.  I recently thought of how I could use my old 9V motors with my NXT using a dual H-Bridge IC such as the SN754410.  This IC is pin compatible with the very […]

     
  • Thanks Maxim

    Experiments, Ramblings, Sensors June 29, 2008 12:36 no comments

    About a week ago I ordered some product samples from Maxim.  I am not talking about the men’s magazine but the IC manufacturer.  Well, they got here yesterday so that’s pretty damned quick if you ask me.  I was keen to get some hard to obtain ICs for my robot […]

     
  • Expanding the NXT with the PCF8574A

    Experiments, Sensors June 23, 2008 18:09 2 comments

    The Mindstorms NXT is great, no doubt.  However, sometimes you’d like to be able connect non-Lego items to it.  The NXT’s ability to talk I2C, the industry standard protocol for interfacing electronic devices makes this an easy to achieve goal.  Since this was my first time hooking up anything non-Lego […]

     
  • Determining Object Distance with Infrared

    Experiments, Robots, Sensors June 15, 2008 11:25 2 comments

    Next Saturday (21 July 2008 ) I am giving a presentation on the Parallax Propeller microcontroller and I thought it would be a nice idea to demo some things with it.  I have a Propeller Education Kit (PEK) and a Propeller Proto Board (PPB), kindly donated to me by Parallax.  […]