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Discussion and news about component-level electronic circuits.Electronic systems and circuits
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Weekly discussion, complaint, and rant thread

Sat, 12/30/2023 - 18:00

Open to anything, including discussions, complaints, and rants.

Sub rules do not apply, so don't bother reporting incivility, off-topic, or spam.

Reddit-wide rules do apply.

To see the newest posts, sort the comments by "new" (instead of "best" or "top").

submitted by /u/AutoModerator
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Russian missile sensor teardown.

Sat, 12/30/2023 - 13:05

This popped up in my YouTube feed, thought you would enjoy.

A teardown of an Russian 'Iskander' missile sensor, recovered in Ukraine :

submitted by /u/Geoff_PR
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I made a Bluetooth display

Sat, 12/30/2023 - 12:49
I made a Bluetooth display

I was just messing around with Sparkfun’s alphanumeric display. Took a bit of fiddling but it’s coming out great. Just need to 3D print a case for it. Since I can only attach 1 photo or video to the post, I’ll link a video of a failed case that I made and the text scrolling.

submitted by /u/Bizarre_Bread
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Project Log of My First Real PCB

Sat, 12/30/2023 - 00:40
Project Log of My First Real PCB

Hey, here’s my project log of making my first real PCB for a product im trying to design. Plz don’t roast me too hard, I’m not an electrical engineer.

submitted by /u/noam_aiz
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Vintage (to me) radar detector

Fri, 12/29/2023 - 01:23
Vintage (to me) radar detector

Nostalgia got the best of me and I picked this thing up on eBay in an unknown state. Powering it up it seems to be in a continuous state of alarm. Unless I have a K band source in my basement I'm pretty sure this thing is on the Fritz.

My favorite part is that the big red light indicator is an incandescent light because it's from the 1980's and LEDs were not what they are now.

For what it's worth, it's pulling about 280mA at 12.5v. That seems reasonable for this thing but I'm not sure what to expect or how to go about debugging the alarm. Not that I'm going to get any practical use from the device.

submitted by /u/iamnotatigwelder
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