u/Xythyr

About 3 days ago I made a post here about a constant current driver to see if it was fine to use. Apparently I made alot of mistakes so I went ahead and did the research and tooks y'alls advice (thanks btw). Hopefully this revision should manage properly.

Here's what I did:
- Swapped the 1V2 zener for a LM4040 2V5 shunt regulator.
- Swapped the N-MOSFET for a 200 hfe BJT.
- Made sure the sense resistor is seeing ~250mV at ~140mA (maximum).
- Removed any components I deemed not needed.

So far the difference between the non-inverting and inverting inputs of the op amp is 18uV ~ 22uV

If you wanna mess with the circuit, here's the link to it.

Also here is the link to the original post.

Hello! I'm currently working on a laser project and was wondering if this circuit was perfectly fine to use, or if I should tweak a few things. The circuit in question is based off of this driver's schematic.

I was looking at the data sheet for the Sony SLD3236VF diode. Is the photodiode pin a required connection in a constant currrent circuit, or is it not really required? (If it is not required then should I leave if floating or connect it to ground?)

I'm fairly new to this sort of stuff so any advice on how I should set this up would also be appreciated :)

So I encountered this Samus player earlier on unranked and it seems like they were hitting super wavedashes consistenly (they managed to most if not all without a problem). I then checked the stats of the game and nothing looks abnormal there either.

I'm wondering if its normal to hit multiple super wavedashes or if this player is just using a macro

Now that I've added a base fill color, should I keep the main horn as-is, or should I continue with the adjusted version?

Left: Adjusted top horn

Right: Original top horn

Managed to recover a piece I had lost back in 2024. Wanted to get y'alls opinion on how the eye and other stuff looks so far.

I was originally looking at a listing for the HDR-PJ760V but it was already bought before I pulled the trigger, so I got this beauty instead. Now I just have to get storage, a step-up ring, and a few filters / lenses

I've been wanting to turn this pen into an EMR stylus but was wondering if there was going to be issues, *especially with the Supernote refill fitting inside.

Will the Supernote refill just be an easy drop-in, or will I need to mod the Zebra bLen to allow for a Supernote refill?

*Edit: fixed grammatical error (escpecially -> especially)

Did a TMR installation for my dualsense. Are the solder joints fine or are they gonna cause issues later on?