askelectronics

Hi,...

I got my hands on an old e-ink price tag and want to repurpose this display....

Hi everyone! Recently I have gotten interested in communication protocols and have been looking for one (with little success, hence my question) which would satisfy the following requirements (in prioritized order):...

I just came across this and thought I’d share. I’ve struggled to get headers and IC’s off boards after soldering them on backwards/upside down. This video shows a cool trick with a piece of copper wire that makes them very easy and quick to get off without expensive tooling. I was thoroughly impressed. Hope someone else...

I purchased an e-bike which was advertised as just needing the batteries replaced. The li-ion batteries had been sitting dead for months. Once I got the battery removed it was clear that was not the case. You can see the hole where the plastic melted from this component overheating on the board. The burnt one is the same as...

I replaced my laptop’s battery after it was swollen. I found out that services like call2recycle do not take swollen batteries since they are potentially hazardous material. How can I get rid of that damned spicy pillow? In Dallas. Thanks....

Hello, I have a circuit that will need to return connected hardware to a default state if power is lost. The hardware can handle continuous voltage, so I’m thinking a simple solution would be to use a battery to provide that fallback power source. To avoid draining the battery, I’d like to connect it through a relay on the...

Hey everyone,...

I’m trying to use an LIS2MDL ic with an Arduino nano on a custom PCB designed in KiCad. I tried the Arduino example compass script for the ic and it didn’t work. It just prints “Magnetometer Test” and nothing else happens

//Edit: It’s a SAS drive. thanks for the help :))...

https://lemmy.world/pictrs/image/24d865e4-966e-416c-937d-321e4ffa3b39.pnghttps://lemmy.world/pictrs/image/d4e99546-a304-439a-b5d9-ebf6b9676eb8.pnghttps://lemmy.world/pictrs/image/d5cec647-3fb6-456b-b1fd-7b7d2059358d.png

Do any of you have experienced good products for tinkering together with a 3 year old?...

Pretty basic question but I am struggling to find the words to get the correct search result. The soldering iron I bought came with very narrow tips that I think are supposed to be used for circuit boards and components....

I’m curious and am playing around with a new EDA tool and am looking at practicing by designing a PCB which should be roughly 28x26mm footprint (give or take a few mm…)....

As the title says, I’m looking for a Linux/macOS-compatible EPROM programmer. I’d like to be able to program parallel (E)EPROMs in the 27xxx range. The newer XGecu programmers seem to not be compatible with Linux/macOS, and the selection of TL866(II) clones is too overwhelming for me to be able to choose one....

I have a whole bunch of them. They are possibly a bit older (70s, 80s) judging by other contents of the junk box they are from....

First of all, I apologize for the lack of a “formal” schematic… I tried to draw one out, but got buried in the nuances of it :)...

Hello! Someone suggested this "If the MOSFET is put into diode connection mode (connect the gate to the drain), you can force a small current (I recommend 1 uA–10 uA; 1 mA would probably be OK; 100 mA would result in significant power dissipation and could influence the results) and record Vds (which is equal to Vgs in this...

This photo shows the power conversion side of two versions of the same board. Input is up to 60V DC, board converts to 5V and then down to 3.3V....

Is there a reason why the banner and logo of this community are just the reddit logo?...

Hello, we are making a thesis where we use MOSFETs as an alternative radiation detector. So to explain it, it works when the mosfet is irradiated with an external radiation source; its voltage threshold increases, which will be used to determine the radiation dose. I'm currently asking for help on how we measure the voltage...

What I've done is take a large 2n3055 BJT NPN power transistor, and decap it (it is a large metal-can type). Then I carefully removed any coating from the exposed silicon (it typically has a dab of silicone potting compound on it)....

Circuit is for controlling the fan on a Raspberry Pi, just on/off according to temp, no PWM. Not sure about the diode as it has a .7V drop and it’s a tiny brushless DC motor. No markings on the fan so I measured the current with a multimeter when hooking it up to a USB charger. Circuit was adapted from here using what I have...

Since I never understood op-amps from reading or practicing problems I wanted to build a circuit to probe around and use different resistor values to set the amplification....

I’m trying to replace the jet engine fan inside the PSU of a Nu 1.1 with a Noctua equivalent and am having trouble identifying the connector. The PSU is a Delta Electronics Model EDPS-250AB A, Part Number 400-5494-91....