#electronics

Hello Mastodon! 👋 I'm Kerem, an electronics technician from Germany interested in technology and science. ⚡ Electronics · Embedded Systems · Programming 🔬 Biology · Molecular Biology · Bioengineering 🧬 Medicine · Cancer Research 🧠 Mathematics · Philosophy I'm here to share projects and ideas, learn, discuss, and connect with people with similar interests. 🇬🇧 English · 🇩🇪 Deutsch #Introduction #Electronics #EmbeddedSystems #MolecularBiology #CancerResearch

I got my #VT100 working again! My replacement EEPROM for the original four 8316Es works, and my board requires no changes to the mainboard (no W2/W3). Super happy! #Electronics

Silly electronics question for people… I'm building a circuit that needs to drive a LED dot matrix panel, which means I need a beefy 5V DC-DC power supply to step down from 12V.

I found a suitable candidate: the Meanwell NID100-5. 5V 11A output. I'll be using it next to radio equipment, so class-B filtering is very desirable. The NID100 can be used without filtering for class-A (industrial) applications, but for class-B you need filters.

Below is the recommended circuit. I'm a little stumped with the inductor. This is not a symbol I'm familiar with. It is taken from the datasheet: https://configurable.meanwell.com/webapp/product/search.aspx?prod=NID100

• https://www.reddit.com/r/ElectricalEngineering/comments/a853u2/what_does_this_inductor_symbol_mean/ suggests it's a "differential mode inductor"
• https://www.eevblog.com/forum/projects/meanwell-nid100-dcdc-module-inductor-selection/ calls it a common-mode choke

The literature I can find says a differential mode inductor has two terminals, this appears to be a four-terminal device with two coils, mutually coupled somehow.

Right now I have a Kicad schematic with a Wurth Electric 7448421016 subbed in there: https://www.we-online.com/components/products/datasheet/7448421016.pdf

Is this the right type of filter here? Should maybe the connections on FL1 be swapped around to invert the phase? (e.g. swap pins 2 & 3, or 1 & 4)

#Electronics #MeanwellNID100

Interesting little circuit... fm transmitter (via strange low priced Chinese websites). Programmed with Arduino or similar to a frequency between 70-108Mhz. (Unfortunately for me, not up to ham radio frequencies, at least not without some fancy mixing circuits added... ) Suitable and legal for piping Halloween music to the front yard, if one wanted. #electronics

Replacing the old battery on rechargeable bike lights https://jvns.ca/blog/2026/09/27/replacing-the-old-battery-on-rechargeable-bike-lights/ #DIY #Biking #Electronics

#NakedDieFriday restarts after operator error! Sorry about that. And I didn't even drink anything yet. :D Today we have a C1034AH-J by Agere. This is apparently a sigma-delta codec sitting in front of a modem DSP. Many thanks to @RueNahcMohr@infosec.exchange for supplying the sample! Full-res map: http://infosecdj.net/map/agere/1034ah-j/infosecdj_mz_nikpa40x/ #electronics #reverseengineering

Hmm, I have not previously heard of this battery technology, ever. Wikipedia: FROG BATTERY "...A frog battery is an electrochemical battery consisting of a number of dead frogs (or sometimes live ones), which form the cells of the battery connected in a series arrangement...." https://en.wikipedia.org/wiki/Frog_battery #battery #electronics #frogs

Reading @lcamtuf@infosec.exchange's book got me back in the lab doing experiments to measure the speed a signal travels through a 100-ft coaxial cable. In this low-quality setup with a 47-ohm resistor on a breadboard, I got 203.2 x 10^6 m/s, or about 68% of the speed of light. In a better setup using a proper 50-ohm BNC impedance adapter, I got 229.2 x 10^6 m/s, or about 76% of the speed of light. #electronics

ESP32 Replacement for Lighting Display Controller https://hackaday.com/2026/09/22/esp32-replacement-for-lighting-display-controller/ #Hardware #DIY #Electronics

edit: it has found a new home! Does anyone here need or want an old 12”ish Philips TP200 amber CRT monitor that has a broken power supply? It’s yours if you pick it up or cover shipping from Berlin. #retrocomputing #electronics

Wire gauge numbers run backwards: 12 AWG is thicker than 24 AWG. The American Wire Gauge scale (Brown and Sharpe, 1857) numbers a wire by how many times it was drawn through a smaller die. More draws, thinner wire, higher number -- it counts manufacturing steps, not size. Six gauges up doubles the diameter; three doubles the area. Area sets resistance, hence voltage drop and heat -- which is why a 26-28 AWG jumper browns out an ESP32 mid transmit. #IoT #Electronics #TechHistory #Engineering

my #electronics experiment this sunday didn't work just connecting a 16x02 LCD to arduino very frustrating as it took some amount of time to solder I tried checking connections and jumpers with multimeter powering arduino from USB, from 4xAA, and from 9V battery changing Arduino pins

#Electronics question. Imagine you’re building a small guitar amp, like the Ruby or Noisy Cricket, and want to power it using a LiIon or similar battery instead of a 9V block. Would it be better to use a 1S configuration with a step-up converter (simpler charging circuit, but potentially more noise during operation) or a 3S configuration without the DCDC converter between battery and amp (hopefully no extra noise introduced, but more complex charging circuitry)?

Hi everyone, it's time for an #introduction on this instance. 👋 I'm Lu (he/him), I live in Leipzig, Germany and you might know me from my other account (@lu_leipzig@troet.cafe). I like to move slow, fix things, hand-write assembly and play synths. On this account, I'll toot about my electronics projects, criticism of AI and the state of FOSS. I might also participate in some AuDHD-related discussions. #electronics #synth #synthesizer #assembly #ActuallyAuDHD

Random ham radio builder tip: old CB radios are a good source for "unobtanium" finals. Usually have a good 5 watt capable final stage for a DIY transmitter.... (and typically can be found for free or less than the cost of attempting to find a working 5watt capable final online) #electronics #hamradio

This is a design I did a few days ago for @fafo@social.fa-fo.de, an I/V curve tracer for semiconductor testing. The idea here is to create a voltage ramp/sine across a potential semiconductor and trace the current flowing, against the voltage. If there are non-linear characteristics, you will see it in the resulting curve, it becomes curved or kinked. The board is basically just a specialized AFE for #analog-toolkit, an analog IO dev-board of mine. It's already with the manufacturer, lets see how it will turn out #electronics #kicad

Hey everyone! We have received some more stock in the German store and the following products are back in stock:

• iCEBreaker https://1bitsquared.de/products/icebreaker
• Tigard https://1bitsquared.de/products/tigard

#electronics #embedded #fpga #opensource

I am working on a little prototype board for my #robot. I've finished the power distribution parts of the circuit and I will start in on the signals tomorrow. The breadboard version worked, but I want to test it in a rolling robot before I send off to get some #pcb printing done. If it works, I'll publish the code, schematic, and PCB layout. There is something quite satisfying about handcrafting #electronics; even if you are a little rusty like I am!

This is the big LG television surveillance documentary story GN have been working on for a couple of months, and that they previewed a few days ago. The complete pervasiveness of spying upon not just you and what you watch but _every person and every device around every set_ is genuinely staggering. And it gets worse if you use their apps, particularly the LG TV "network": https://www.youtube.com/watch?v=6IFVTcM28KA Having an old set DOES NOT HELP YOU; they've been adding these spying functions in firmware updates. So DO NOT BUY ANYTHING LG. Certainly not anything "smart." #LG #surveillance #spying #evesdropping #CorporateSurveillance #SmartTV #DoNotBuy #television #electronics #HomeElectronics #journalism #news #GamersNexus

know the difference #electronics