Project Start

Included our photos of my easily accessible stash I have lots more but as far as chips and whatnot is it in the second and last photo the last photo is a I don't know a lot of pens one two three 4 5 6 so it's a 16-pin I believe programmable

17882902375854721492845684631198.jpg

17882903147857049259824791578297.jpg

17882903484007472426209910916270.jpg

1788290389392548240259036676205.jpg

17882903994029096784698950330994.jpg

Thought for 12 sec

flux

The 16-pin chip appears to be a 74HC595 shift register, not a programmable microcontroller, so it cannot control the fan by itself. The fan label confirms 12 V, 0.30 A.

For the compact PCB, I recommend sourcing an ATtiny85-20SU (SOIC-8) plus a small 5 V regulator; your K3919 can switch the fan. The board will also need a few small support resistors/capacitors beyond the originally listed parts.

jimmyhustle

Well could you provide me with a bare minimum design for what I currently possess and then the upgraded more marketable version and are there any parts available on the board photo included I might be able to purpose

Thought for 13 sec

flux

I’ll create two versions: a minimal analog controller using your existing parts, and a compact ATtiny PWM version suitable for a manufactured product. I’ll also identify which photographed salvage parts are reusable and clearly flag the limitations of the analog version.

Thought for 10 sec

Created 4 tasks.

1/4 Document requirements and identify reusable photographed parts

Document requirements and identify reusable photographed parts

Create bare-minimum analog fan-control schematic

Create upgraded ATtiny PWM fan-controller schematic

Verify both designs and summarize manufacturing path

Thought for 6 sec

Referenced guidance.

No schematic yet

Talk to Flux to get started.