Hey people,
maybe someone's got a good idea.
I've got one of these Fluke laser levels but it behaves weird.
https://www.fluke.com/en-us/product/building-infrastructure/laser-levels/fluke-180lr-fluke-180lgMine shuts off after about 20 or 30 seconds. I think I know why it does that: It's an ex demo unit from a shop, never intended to be sold. To preserve the batteries I suppose they made special demo units that shut off. Now, I'd like to use it anyway it's quite handy to have. But in this demo mode it's a pain when you're up a ladder marking stuff up and constantly need to climb down to switch te laser back on.
I thought maybe there's just a jumper or resistor inside to put it in this mode, so I've opened it to have a look. I can't find anything that looks like it was hand soldered. I've even drawn out the schematic to make sure. There's not much happening in there.
Just an unmarked micro a dual mosfet and a low power reset circuit. So I suppose they used a special version of the micro with a special firmware on it. Or maybe I'm missing something. Haven't done any measuring yet.
I suppose the micro turns on MOSFET 1 to switch on the horizontal laser beam and MOSFET 2 for the vertical beam. When both are required both MOSFETS get turned on. Then there's the fourth pin on J2 that I assume activates the tilt mode - the laser level is not a level anymore in tilt mode. As I said have not checked if any of that is true yet.
As I see it there are two options now:
1. Find a µC with same pin out, write code for it and replace the original.
2. Complete re-design of my own.
Maybe I'm missing something obvious?
PS:
Sorry, only had that red piece of paper
.