Booster circuits require power to operate, which would drastically lower the ‘effective’ efficiency of the solar cell. I was going for a charging system which practically pipes power directly from the cell to the battery. However, the project was pretty much a complete failure. Haha. I don’t have pictures.
I found myself creating a DD Roche F6 driver. I didn’t really intend to, just happened. :~
I’m hoping my board gives clearance for a attiny programing clip. Anyone know what the minimum clearance would be? I don’t actually use those clips myself.
Probably won’t use this DD Roche F6 driver myself. I haven’t got into pure DD myself yet. Also don’t even have an Roche F6 yet.
I currently have a pads for a Alps SKSC Series switch on my board. Mouser SKSCLAE010 But I don’t want to force people to make a mouser or digikey order just to build my board. H) Shipping is expensive for people not in the usa. I’ve added extra vias to accommodate common switches from ebay. Something like this Tactile Switch, 2 Pins, 3*6*5mm
That switch looks VERY interesting. Nice tight package for hosts that do not have a lot of wiggle room. Nice find. I might need some to go with the eleventy-seven-billion tactile switches MRsDNF just sent me lol.
There are a few right angle switches which are smaller.
I just picked that one because it provides versions with different operating force while still one of the least expensive.
Can someone more experienced with the BLF17DD help me, please?
I'm pulling my gray hair out trying to figure out why low voltage mon. is way off on the BLF17DD board I built up. When the cell falls below maybe 4.10v, the firmware starts cranking down output, using the 130 and 120 values as JC uses. So it thinks the battery is much lower than it really is -- pretty much useless. I've double/triple checked the circuit and it match's a Nanjg driver perfectly (diode configured in correct position, R1 and R2 are all good, etc.).
This is a straight FET build, not a zener mod build, just one battery - it's in a Convoy L4 host. This is my 3rd BLF17DD build (pre v2.0 ), and first time I noticed this, though I didn't do much at all in low voltage monitoring testing on the others.
Should this work ok? Maybe a bad chip or something?
I’ve got more than a dozen of em running and haven’t encountered that. I don’t tend to run cells down so far as to have the driver shut it down, but I’ve had em down to 3.8V or a bit less with no issues.
Edit: Could one of the voltage monitor resistors have bridged, causing a mis-read? (I’d suspect the 1920)