help with building the no can dew buster controlle

Has anyone built one of these? I have been trying unsuccessfully for a couple of weeks..I must be missing something....

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When you say unsucessful, does it not eliminate dew formation? These devices are Not hand warmers. Your pic is unclear on my pc with some connections & print unreadable plus I cannot discern heater element conection, so I cannot comment on the schematic. You do know that the circut Common return is to be connected to power Negative? Suggested contruction methods would be to use a socket for the IC rather than soldering direct to IC; some IC's are static sensitive & require special handling procedures with a Ground lead attached to the handlers' wrist. If you have hand soldered direct to IC, it is probably dead. Leave transistor & diode leads long & apply heat sinks when soldering to them (arrange sinks so that heat is drawn Away from device rather than towards it). Leave all part leads long & Do Not snip leads short until After soldering.