joulian Posted September 23, 2009 Report Share Posted September 23, 2009 I want to build a device that i can more or less mount in a hat or something like a belt that will alert me to something approaching. Something that works off heat perhaps. I work outside sometimes on projects and it gets dark on me and I would like to know if someone is sneaking up on me. I think the problem would be excluding myself from being detected. I was thinking i could use a cell phone vibrator to alert me if someone is approaching. Any ideas on circuits that might assist in the making of this project? Quote Link to comment Share on other sites More sharing options...
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