pummer 1
today Roger and I started to build pummer. the circuit is quiet complex. we had to double check the wires and make sure the connection on each section. here is the progress!!
* we try to build 4.7M with 4 1M and 7 100k resistors.
the masurement is 1585 for the risistance from 7 100k.
we don't know why?! it's a little confusing.
*try to figure out if the battery is fully charge or not.
*complete the circuit !
*close up.
Questions ?????
one thing we don't quiet understand is that the circuit wasn't working until Tom switch the capacitor on the opsite side. it lights up, but it does not like the diagram. also when we change the capastor from 1000 uF to 3300uF, the 3300 one works more effective and supply more energy.
*the led is flicking..
* parts/ by Jeff
*diagram/ from Make Magazine
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next step:
1. masure how much voltage and amps we got from the solar cell
2. make it more efficent
a. pallarl the solar cell = gives more amps : 3v 20amps *2= 3v 40amps
b. extent the solar cell to the sun light.
3. make the 555 timer.
4. make the display design.