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The Shy Dildo
A personal vibrator that stops when it is touched.
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This is a work in progress: The 5v circuit uses an Azoteq IQS127 Proximity Sensor. It uses capacitance to sense touch or proximity. The output of this is a 0-5v level which is fed into the Reset of a 555 timer chip which runs at about 150Hz, 30% duty. This 30% duty 5v signal is fed to the base of a Darlington transistor, which drives the 1.25v vibrator motor. The Problem:When the motor is disconnected, the sensor works flawlessly. When the motor is connected, the sensor switches on and off intermittently. I've tried looping the power wires through a toroid, and this helps, but the intermittent activity is not acceptable. Any ideas on what I can do to improve it? |
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Stefan Hermann # May 30, 2011, 11:19 a.m.
Hey firesign, this is a great project. We like it a lot! I think, the problem of the sensor switching is caused by electromagnetic interferences produced by the motor. Maybe it helps, if you solder interference suppression capacitors on the motor. Best, Stefan*