Back in 2017, I built two LED flasher circuits. One is using passive components as per this circuit and the other is using an LM3909N LED flasher chip with a capacitor, the same as used in the Pink Floyd P.U.L.S.E CD packaging.
At the time, I used a AAA battery on one and a AA on the other. I think it's just because those are the holders I had in the junk box.
I've just swapped the AAA holder to an AA holder and put new Energizer batteries in them..
I've only really ever used them with batteries that are too flat for any other devices, and they still flash for months. This is the first time I've used brand new batteries.
How long do you reckon these are going to last? Surely, at least a year? Does anyone care?
I'll keep the thread updated with any news.
At the time, I used a AAA battery on one and a AA on the other. I think it's just because those are the holders I had in the junk box.
I've just swapped the AAA holder to an AA holder and put new Energizer batteries in them..
I've only really ever used them with batteries that are too flat for any other devices, and they still flash for months. This is the first time I've used brand new batteries.
How long do you reckon these are going to last? Surely, at least a year? Does anyone care?

I'll keep the thread updated with any news.