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While waiting to verify the result of my Solar Charger, I starting thinking about ways to use the fully charged CR2 lithium rechargeables I had.
I came up with this 'thing', which just sits there and blinks, so I'm calling it my 'Blinkie Thingie'. Using just an inexpensive 74HC04 Hex Inverter, it provides a Color wheel or maybe a disco light for small pets.
I came up with this 'thing', which just sits there and blinks, so I'm calling it my 'Blinkie Thingie'. Using just an inexpensive 74HC04 Hex Inverter, it provides a Color wheel or maybe a disco light for small pets.
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Apr 24, 2011. 3:47 AMfreethetech
says:
I was looking at the parts list, and I noticed it needed 3 resistors all over 7.5m. Can I substitute these for all 1m? I have about 40 1M resistors, but none higher than that.
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Feb 7, 2011. 10:25 AMrahulhari
says:
Where do you connect the batteries?
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22
Feb 7, 2011. 6:55 PM
qs (author)
says:
qs (author)
says:
The IC chip has a (+) and a (-) connection on pins 7 and 14. That's where the battery connects to.
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Jun 3, 2010. 3:27 AMacmefixer
says:
Hey, that works, too. I've never been able to get glue to stick well to PVC, though. This evening I made a holder from a single AA cell holder (from Radio Shack) and a spacer. The spacer is a 4-40 by 1 inch screw, two washers and three nuts. Works, but it's longer than I'd wanted it to be.
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