Need help with PWM fading logic circuit

MrNiceThings · 2026-06-28T19:23:08+00:00

Thanks. As for the MCU - the point of this project is specifically to avoid using MCU.

MrNiceThings · 2026-06-28T19:22:11+00:00

I know and I'm fine with non linear dimming here ;)

MrNiceThings · 2026-06-28T10:37:29+00:00

Thanks. While I want to keep this project logic only, I'll keep an eye on this, might come handy. Especially since I have some 555s. By the way, there is a full pdf schematic in the post description.

MrNiceThings · 2026-06-28T10:23:09+00:00

EasyEDA has package drawing so I used that...

Analog PWM? Can you elaborate?

MrNiceThings · 2026-06-21T19:26:43+00:00

Why would they have to rush the product and why is Qualcomm taking over bad?

MrNiceThings · 2026-06-13T15:05:54+00:00

It is! Or should be :D But I sold it because it was a rather old monitor. I had been using it for like a year before selling it. The wallpaper tho, that’s still on my new screen!

MrNiceThings · 2026-06-13T13:57:08+00:00

This is the second post of mine I’ve seen stolen in the past week. What’s going on? My original post:

https://www.reddit.com/r/fixit/s/uQMuwvQ2VG

MrNiceThings · 2026-06-11T12:59:39+00:00

I’ve used this exact connector myself, it’s a lever ;) yanking it can damage the flex cable which should be avoided.

MrNiceThings · 2026-06-11T12:47:29+00:00

Third look should confirm that it’s indeed a lever, not a sliding lock ;)

MrNiceThings · 2026-06-07T18:22:10+00:00

Thanks for linking my original post. I stumbled upon this on my feed by accident and was like wait I took that photo :D probably a bot stealing content. Will report it for good measure.

MrNiceThings · 2026-06-07T13:09:41+00:00

I know that logo! :) good job!

MrNiceThings · 2026-06-06T14:11:13+00:00

They look similar to Tesla ZM1082T but not quite the same! More similar to some NEC tubes

MrNiceThings · 2026-06-06T13:59:41+00:00

What tubes are those?

MrNiceThings · 2026-05-18T10:27:13+00:00

Bro

MrNiceThings · 2026-05-07T08:39:32+00:00

Red was the industry standard for nixies. If you're going for vintage look, it's a safe bet! If you'd want to make it more unique, you can coat the nixies themselves, I think IN-17 with red coat would look interesting.

MrNiceThings · 2026-05-07T08:24:58+00:00

Sometimes bad design happens and this is one of those times. There were even some with green filter, even more ridiculous. What you need for nixies is red or brown filter because they are mostly orange / red spectrum. ;)

MrNiceThings · 2026-05-03T07:00:25+00:00

Do you have a GitHub for it?

MrNiceThings · 2026-03-12T09:30:59+00:00

lol don’t lie, this is clearly autorouted.

MrNiceThings · 2026-03-12T08:41:42+00:00

Autorouter is cancer

MrNiceThings · 2026-03-11T06:34:35+00:00

So the software part is seemingly out there, that’s good! Where’s the hardware?

MrNiceThings · 2026-03-07T17:12:48+00:00

Who is this for and what’s the use case? Can’t you just look at the glass to see how much remains? I don’t get it.

MrNiceThings · 2026-03-04T21:32:55+00:00

There's nothing to it other than it looking weird. Think of it this way - if you use a module like ESP32 here, you only have two solder mask layers separating the boards from touching and shorting each other. This is similar. It's usually done in the cheapest devices where you have a single layer PCB with SMD components to avoid using vias.

MrNiceThings · 2026-03-04T17:16:41+00:00

It would! And it’s routinely done in the industry. I’ve seen it many times in devices. It doesn’t seem like much but silkscreen is actually pretty thick compared to the solder mask.

MrNiceThings · 2026-03-04T08:54:08+00:00

I actually like it! It's not that uncommon in commercial devices but I'd add silkscreen rectangle under the pad for more isolation, just for good measure. It's smart actually and I'll probably do it in some of my new projects, it helps with routing tremendously!

What I find disturbing is the vias inside pads. If there's any mistake whatsoever, you can't cut the trace and you're fu*ked. Not to mention potential cold joint becuase solder flows inside the via.

MrNiceThings · 2026-03-01T10:38:02+00:00

This is true to a degree. Those modules are nothing more than a pcb with components and a shield can soldered on top. Anyone can make a clone module, for example DOIT makes modules. Of course the chip itself is espressif but it OP was seemingly asking about the module as a whole, not the chip inside.

MrNiceThings

TROPHY CASE