Does this count as duplicating a generic:
I designed ( don't laugh ) an entire fake fire bed in a fake electric fire, one of those that used a small motor to turn a rotary reflector, got fed up with replacement motors buzzing so designed a log effect bed that's lit by LED's, those are in four rows fade up and down, I planed to use one of my remaining ATMEGA328P.
Come the 'great reset' and I decided I should keep my few ATMEGA328P for better things, yeah I know, there is some knock off ones about but I don't touch knock off.
So after scratching my grey beard I decided to go ol skool and redesign using 2 quad op amps, a few k30 FET's ( have a pile of them from years ago) 4 lm555 ( because I use those in almost everything ) a few tip31a's and a simple linear psu. the 555's provide pmw to the tip31 led drivers that are configured to provide a simple CC supply, the op amps generate a slow triangle that controls the 555 pwm via a fet stage. It works but not as good as planned due to the fact there is not as much randomness as there would be with a ATMEGA328P, best I could do was mix the LED's up a little.
Next, though not really due entirely to the 'great reset', I was asked to repair an old bench power supply that used a LM723 as a voltage reference that was a dead duck, knowing the LM723 is almost unobtainable I took the repair on as a fun project, once I had found out what the actual reference voltage was, no diagrams or service info so did the big sums going by the circuit around the LM723, I then created a small pcb with a tl431 ref and a few transistors, the pcb fits there the LM723 was, the psu sprang back to life, only needs a to twiddle a few presets so the output matched the V/A printed on the back plate.
There's a ton of other stuff I've had to either scrap till the 'great reset' is over or redesign using whats available, its becoming rather tiresome.
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