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Discussion and news about component-level electronic circuits.Electronic circuits at the component-level
Updated: 2 hours 14 min ago

Marconi SWB-11 WW2 era

Wed, 02/12/2025 - 04:04
Marconi SWB-11 WW2 era

This is my grandfather during WW2 inspecting what I believe is a Marconi SWB-11. Grandpa was an Australian based radtech for the Army. I am curious in anyone knows what the designation of KURE II is for.

submitted by /u/AcceptableSwim8334
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Not sure if this is the right subreddit but I think you'd like this.

Sun, 02/09/2025 - 02:51
Not sure if this is the right subreddit but I think you'd like this.

Spent a couple hours today getting the silicon die out from one of these epoxied on chips. Using a small alcohol lamp. Sadly, I got some of the super glue I was using to mount it to a slide on it.

submitted by /u/holllow_world
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Weekly discussion, complaint, and rant thread

Sat, 02/08/2025 - 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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Inside a 7 pin Micro USB connector from Samsung devices (+ pinout)

Sat, 02/08/2025 - 17:26
Inside a 7 pin Micro USB connector from Samsung devices (+ pinout)

I was interested to know why a usually 5pin connector plugged to a 5 wires cable had 7 pins. So I took an old connector and opened it up !

I discovered that it was a standard 5 pin connector with 2 unused pins that I labelled "Shield". You can see on picture 4 that when connected to any standard cable, the "shield" pins are just unused and don't connect to anything.

Knowing this, It will be quite easier to repair Samsung devices (where I found this kind of connector mostly) : this is almost 100% compatible (except the anchor points) and a standard generic 5 pin microUSB does the same job really well. Maybe less sturdy but still functional.

This was a quite nice discovery for me ! I just wanted to share, since I didn't find a lot of talk about 7 pin microUSB connectors on the Internet

submitted by /u/FrenchBelgianFries
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Inside a siemens softstarter

Fri, 02/07/2025 - 13:09
Inside a siemens softstarter

I really like the flexible section instead of using a connector or soldering it in place.

submitted by /u/Rockroxx
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Interesting screen connection method

Thu, 02/06/2025 - 01:54
Interesting screen connection method

I disassembled this "recalibrateable" Caliper and I was wondering why the LCD came off like this with no clear way for the signals to travel to it, I can only assume this is a very interesting way for them to recalibrate it without having to add more pins/pads.

submitted by /u/holllow_world
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Soldering cobot

Wed, 02/05/2025 - 23:54
Soldering cobot

Soldering cobot I've made few months ago. It's based on UR5-e cobot with a JBC soldering tip. All is automated.

submitted by /u/Open_Translator_7237
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