Hello, I'm soon to work on a led flash flight project. One of the problems I'm facing is finding the smallest micro processor to fit on a tiny pcb board. The smallest one I came up with is the attiny85. The problem is that processor is still to big to fit. Dose anyone know of any tiny Micro processor that is half or quarter the size of an attiny85? I only need 1 or two pins that is all.
Joseph
What is the processor to do? Perhaps the function could be performed by a few small discreet components.
To change the brightness of the led maybe in PWM also to sos flash. I have this old military flash light I thought it be good to do something with it. It was my grandfather flash light.
What is a psb board? And what package type of the Tiny85 did you try? There are very small variants that are only usable if you are making a PCB.
I'm sorry autocorrect did that. I'm on my cellphone. I didn't even see that, I corrected it. yes PCB board. a Friend of mine is helping me to make one . I'm just trying to find the smallest Micro processor I can to fit. I had one that was small a long time ago. For the life of me I can not remember which one it was.
Tiny85 comes in an MLF package that is 4.0mm on a side.
Tiny10 is available in a 3mm SOT-23 package or a 2.0mm UFN package if your code will fit on it.
The physical size of them is to big. There is not enough room on the PCB. Plus the lens takes up a little room as well.
Sorry, I missed the last part of your opening post where you mentioned "that is half or quarter the size of an attiny85".
ATTINY20:
It's all good. I made a lot of mistakes myself. But I think I found one. Searching a lot of google pages and images It looks like the Attiny10 will work.
Take the guts out of a modern flashlight that knows how to do the tricks and mount it in the old housing, A 3D printer would be a help.
I could do that 100% I could. But then again. I don't have access to a 3D printer because I had to sell mine. And No room for any within the flashlight housing for a 3d part unless I remove the batteries and do something in that area with say a Lipo.
I wanted to keep it mostly all Original as I can Even down to it using it's 4D batteries. There is enough room for a single or dual layer PCB but that is all.
Also I could program it to do different patterns or something. Which it pretty cool on it's own. Also it can help me out a lot to know more about programming in tight sketch spaces. Or should I say limited sketch spaces.
3 D-cells will still give 4.5V and a one D cell construction module.
Yes I'm Thinking about that part. Sense I can not 3D print a fake D battery for a pass through. I'm lhinking in what I can do. Maybe using an LDO. One of them I'm looking at is the https://www.mouser.com/ProductDetail/Torex-Semiconductor/XC6221A452MR-G?qs=AsjdqWjXhJ8DJWLF1rwsCw%3D%3D from mouser max input is 6v with a 4.5v output. and a dropout range of 80mV.
Edit: It should be enough for the led and Micro controller.
Open the can (wearing gloves) of the battery and discard (safely) the guts. Use the remainder of the can as a build frame.
That Was the other thing I was thinking of doing. I even got big enough heat shrink to cover it up.
I can like the fake batteries and put sand in it. Just for the fun of it. LOL
Duct tape! Its inside the tube, safe from most hazards.
Now you talking. Thank you, Great idea.
"1 inch" PVC pipe is only slightly larger in diameter than a D battery...
If your flashlight isn't one of those newfangled "batteries are such a tight fit that if they leak you'll never get them out" versions, a piece might fit fine.
