Full Pummer circuit with parts
(YouTube video of the pummer in action)
Breadboarded up the circuit for Solarbotics' pummer kit (see the notes for details). I'm building it without the PCB so I wanted to do a little proof of concept and planning for my free-forming. Surprisingly, it worked the first time I plugged in the batteries!
A pummer is like a nocturnal electronic plant. It absorbs light during the day through a solar cell and then at night, when darkness falls, it flashes an LED. It flashes the LED with a gradual decay, kind of like a charging Powerbook.
I haven't attached the solar cell yet. . .I still want to play around a little with some alternate values for the big capacitor since that's supposed to control the rate of the pumm.
Full Pummer circuit with parts
(YouTube video of the pummer in action)
Breadboarded up the circuit for Solarbotics' pummer kit (see the notes for details). I'm building it without the PCB so I wanted to do a little proof of concept and planning for my free-forming. Surprisingly, it worked the first time I plugged in the batteries!
A pummer is like a nocturnal electronic plant. It absorbs light during the day through a solar cell and then at night, when darkness falls, it flashes an LED. It flashes the LED with a gradual decay, kind of like a charging Powerbook.
I haven't attached the solar cell yet. . .I still want to play around a little with some alternate values for the big capacitor since that's supposed to control the rate of the pumm.