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Step 2HOW IT WORKS
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This Socbot takes advantage of one of the most useful characteristics of the PICAXE -08M - its ability to send and receive all 127 Sony 38KHz infrared television control codes. This feature allows the 08M to communicate with a remote control, a television, or even another 08M. Here the 08M watches for a valid code from the universal remote control and responds to button presses on the remote by sending a current pulse to one or both pager motors.
The 08M outputs can handle around 20mA each so I hooked the outputs up in pairs in order to feed 40mA to each motor. An 82 ohm resistor in series with each motor limits the current to the 40mA maximum. A fast acting signal diode in parallel with each motor helps sink the induced voltages created by the motors. Capacitors would greatly improve the protection, but would also add to the size of the bot so I just left them off with no apparent short term ill effects.
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This Socbot takes advantage of one of the most useful characteristics of the PICAXE -08M - its ability to send and receive all 127 Sony 38KHz infrared television control codes. This feature allows the 08M to communicate with a remote control, a television, or even another 08M. Here the 08M watches for a valid code from the universal remote control and responds to button presses on the remote by sending a current pulse to one or both pager motors.
The 08M outputs can handle around 20mA each so I hooked the outputs up in pairs in order to feed 40mA to each motor. An 82 ohm resistor in series with each motor limits the current to the 40mA maximum. A fast acting signal diode in parallel with each motor helps sink the induced voltages created by the motors. Capacitors would greatly improve the protection, but would also add to the size of the bot so I just left them off with no apparent short term ill effects.
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