![]() ![]() ![]() It didnt have to be a black box that stares at you blankly. The DreamSky Compact Digital is an easy-to-use, push-button, large text alarm clock featuring dual USB ports that can be used to charge a phone while powering the clock. Gauri Nanda is the creator of an innovative new product: an alarm clock named Clocky that, in addition to ringing, rolls around the room in order to f. I have used this technique for aTyco N-Sect, several small remote control helicopters, a remote control drinks cooler and a line-following robot from Jaycar, which I recommend highly as a good, cheap, tracked robot base. Laying in bed one morning, Nanda realized that the alarm clock was long overdue for a makeover. All of the devices I have seen so far have a resistor before the transistor to reduce the power to a level where it won't kill the transistor. Take Note! Never put the output directly onto the transistor. By taking the lead from the Arduino's output, usually D9 for Fade, and putting it on the right point in the circuit, I can check which transistors control which motor and which direction. NANDA CLOCKY - THE ALARM CLOCK THAT RUNS AWAY TO GET YOU OUT OF BED Quite simply, the Clocky is the alarm clock for people who have trouble getting out of. For example, I load the Fade sketch, connect the ground to the negative battery terminal, put some batteries in the device and power up the Arduino. Usually when I see a PCB laid out like this it means I can, by trial and error, ascertain which transistors do what and then control it with one of my favourite devices, an Arduino! The Arduino is an excellent diagnostic tool for devices like this as it can give a logic signal out in a controlled manner. After dissecting a bunch of toys and gadgets I learned that many of them are controlled the same way, with similar electronic layouts. ![]()
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