How to fix torn flex ribbon cable

Apr 2025 ⋅ ⋅

Kill A Watt Meter

Dec 2024 ⋅

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First attempt at micro soldering

Jun 2023 ⋅

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The D key cap broke in half and fell off my laptop. This was my genius solution

Sep 2024 ⋅

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How to check if these cells are rechargeable or not?

Aug 2023 ⋅

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Free CRTs, motors, and switches

Oct 2022 ⋅

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Where do I find timed on switches like this (mechanical)? I would like to install these on appliances I accidentally leave on.

Jan 2025 ⋅

⋅ ⋅ #mechanical

HDMI video capture card overheating

Jul 2024 ⋅

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What is it?

Nov 2024 ⋅

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Update - My Pack Before Wrapping

May 2022 ⋅

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I built a RFID-Jukebox to easily play Spotify playlists on Spotify Connect devices.

Oct 2021 ⋅

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Name that board

Dec 2024 ⋅

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First time soldering SMD! I'd call that a success.

Mar 2022 ⋅

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I'm working on a Solar Power Converter with a Supercapacitor backup based on the AEM10941 chip from ePeas. My question is - do I need to filter the solar power input? If so, what type of filter should I use?

Mar 2023 ⋅

⋅ ⋅ #M

I have a custom motor shield for Arduino using relays to allow a 12v drill battery supply to flow through and to control the direction of the l drill motor - But when it activates (relay closes) the spark inside the relay melts its elf shut, how do I prevent this? What ohm resistor do I need & where

Sep 2024 ⋅

⋅ ⋅ #relay-closes

I made a current limiter, for plugging in dubious electronics:)

Jul 2021 ⋅

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Reused Vape Battery

May 2025 ⋅

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Got an old vintage radio, how to attach an antenna and what material should it be?

Jan 2025 ⋅

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Found this board outside a courthouse any ideas what it is?

Oct 2023 ⋅

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Portable 9v supply

Apr 2023 ⋅

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Liquid-Cooled Franken-Fridge

Apr 2022 ⋅

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How do I determine which cell(s) have gone bad?

Mar 2023 ⋅

⋅ ⋅ #s

Purchased a 1999 woody doll and upon opening the battery pack had corroded batteries, and after cleaning up the contacts and battery compartments still no luck. I’ve taken the voice box out and taken the back panel off and this is what I’ve found. Does this look familiar to anyone? Goner or hope?

Jan 2025 ⋅

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Buzzer Hack. 12 second time delay before opening

May 2023 ⋅

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got this old beauty for next to nothing and it still works, how would i go about getting it to actually have working channels...?

Nov 2022 ⋅

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New to this all, any good path to making something like this ? More in comments

Feb 2023 ⋅

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3.5mm jack of my headphone broke and wireless earphone's speaker went mute. Fused them together and it works flawlessly!

Jun 2021 ⋅

⋅ ⋅ #5 #3

I have this study light , it's battery capacity is very low , I want to increase its battery capacity , but I'm afraid as I don't what would happen I just add one more battery, also what type of battery I should add and will the circuit support it???

Dec 2024 ⋅

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macOS Cyberdeck with a Mechanical Keyboard

Aug 2022 ⋅

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DIY wearable taser

Apr 2022 ⋅

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One of us, one of us

Mar 2025 ⋅

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Help identifying the chip inside this pill box (COB microcontroller)

Apr 2025 ⋅

⋅ ⋅ #COB-microcontroller

Cubes from broken microcontrollers

Apr 2020 ⋅

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Latest haul from the used book store.

Oct 2021 ⋅

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James Webb's Near Infra-Red Camera.

Feb 2022 ⋅

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Is there any point to attempting to fix a connector like this?

Apr 9 ⋅

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Use a DirecTV Satellite to receive DirecTV signals without a subscription

Jul 22 ⋅

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Is there a big difference between these 2 styles of potentiometer?

Jun 22 ⋅

⋅ ⋅ #2

why does DC plug have 3 terminals?

Mar 25 ⋅

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Advice on soldering...I hate electronics

Jul 24 ⋅

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Diy solar setup for chicken coop door stopped working

Jun 1 ⋅

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Any good ways to amplify the signal from a neon relaxation oscillator?

Apr 16 ⋅

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Does anybody make shorter USB C male plugs?

Jul 30 ⋅

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Discrete op-amp issue

Dec 2025 ⋅

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Anyone interested in this signal amplifier circuit and does anyone have anything they want to add?

Jun 12 ⋅

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How to reduce flickering of the LEDs

Dec 2024 ⋅

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My workspace mid project

Mar 2022 ⋅

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How does a 12V dc motor differ from a 24V dc motor?

Jun 2025 ⋅

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Arduino Radar with Ultrasonic Sensor - see comment for details

Nov 2022 ⋅

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We just tested our DIY untethered deep sea camera for the first time off the coast of LA!

Jul 2023 ⋅

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Should I stop using this?

Nov 2024 ⋅

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Dead pottery wheel lcd screen

Jul 2024 ⋅

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Help! Cable + electrical issue

Feb 2024 ⋅

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Repair gone wrong -got burned

May 2025 ⋅

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New parts drawer labels

May 2022 ⋅

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My latest project

Jun 2022 ⋅

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Spice vs Prototype. Why can't it be easy? OTOH, what fun would that be?

Jan 2023 ⋅

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Learning Logic; why are the circled resistors there in this AND gate? The circuit works without them. Thanks!

Jan 2023 ⋅

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Home made zinc oxide tunnel diode. (How are superconductors so easy?)

Apr 1 ⋅

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Year 1986: My first (big) original project for self-learning purposes - digital drawing on TV using a joystick. No CPU/MCU was used, and thus it wasn't running any software. Also no software was used to make it. All wok was done on mind and paper.

Aug 2022 ⋅

⋅ ⋅ #U-MCU #big

Found mini board inside disposable vape - is this a basic charging board for the lithium cell?

Jan 2023 ⋅

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Automatic plants watering system based on a opamp :)

Jul 2022 ⋅

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This was the project that you all helped me with last year. It was super easy, but started me into a hobby I have really began to enjoy. Laser turns off street light and makes fireworks much better.

Jul 2023 ⋅

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Added banana plugs to my 4-20 signal genny

Feb 2024 ⋅

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Soldering iron bite after 6 weeks. Looks like I’m gonna have a permanent battle scar.

Dec 2021 ⋅

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found this cool little thing, ideas?

Jan 2024 ⋅

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Why is there copper wire (and weird colored wire) around the cables?

Mar 2025 ⋅

⋅ ⋅ #and-weird-colored-wire

I built three Jacob's Ladders for Halloween displays

Oct 2023 ⋅

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Hey, any tips for getting rid of/stopping these forsaken solder bulbs from forming on the other end of perfboards while connecting pads with solder? Already ruined a circuit for me and don't wanna mess up anyother. Anything at all is much appreciated, thank you!

Jan 2025 ⋅

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What size fuse to put this on? Amazon description said 36 watts but I don’t know if that means per port or total. If there are devices plugged into all 3, will the total output be 3A or 9A? Thanks

Jan 2024 ⋅

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So to find the data sheet on this ic, I should just type nothing into my browser, right? Is that how this works?

Jul 2022 ⋅

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Hello everyone! This is my DIY IR/RF remote based on the ESP32. More in the comments

Mar 2023 ⋅

⋅ ⋅ #R/RF

How do remove accidentally gooped solder

Apr 2025 ⋅

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RB quicky.

Apr 2024 ⋅

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Dyson vacuum charger chewed by a rabbit

Oct 2024 ⋅

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My DIY electronic project.

Jul 2021 ⋅

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Constant high pitch noise

Sep 2024 ⋅

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Please help me fix my wife’s vibrator for Christmas. Details in comments.

Dec 2021 ⋅

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What sort of plug do we use here?

Jan 2023 ⋅

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Learning about inductors and flyback voltages. Couldn't help but make this.

Mar 2023 ⋅

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Educational workbench

Jun 2023 ⋅

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Stun gun reverse engineering

Mar 2025 ⋅

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Bought a Toshiba ty-cdl5 from Japan and accidentally plugged it into a non-Japanese AC source that absolutely fried it. Details below.

Jan 2024 ⋅

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Do you think this inverter is pure sine? I saved it from trash, want to use it as inverter in my van for camping if needed (I have aux batteries, separate from car battery system) I'm thinking this should be a quality inverter since it was meant for computers. I don't have a oscilloscope. TIA!

Feb 2024 ⋅

⋅ ⋅ #I-have-aux-batteries,-separate-from-car-battery-system #separate-from-car-battery-system #I-have-aux-batteries

Is this safe to leave plugged in, I was shocked.

Apr 2025 ⋅

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Needed to power a project for testing. Had an old laptop power supply and some LM2596's. Whipped up a quick mount in fusion and printed it out. Now I have an adjustable power supply.

Nov 2023 ⋅

⋅ ⋅ #M

Is this safely correct?

Jan 2024 ⋅

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Old telephone as a microphone (help 🥺)

Jun 2025 ⋅

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Home solar power project with web interface.

Oct 2022 ⋅

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Given as non-working. Did not turn on. Pretty obvious why.

May 2023 ⋅

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Look at this quite exotic old probe, a 40-kV rated Tektronix P6015

Jul 2022 ⋅

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Tiniest solder work I've ever done. Prototyping can be difficult. Bet it works? 😅

Oct 2022 ⋅

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Where are the pentiometers

Apr 2024 ⋅

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Is it safe to control a 220V 1.4A dehydrator using a 220V 2A solid state relay?

Feb 2025 ⋅

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Using a hot glue stick to create a lens for recessed LEDs inside an enclosure

Jul 2021 ⋅

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Homemade QFN board

Mar 2023 ⋅

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What is this part from a small space heater? Any help is appreciated.

Dec 2022 ⋅

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Since Apple didn't make one I built an iPad Mini Magic Keyboard myself

Apr 2022 ⋅

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Every time

Jul 2020 ⋅

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Any suggestions

May 2025 ⋅

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Got sick of connecting stranded wire from power supplies to breadboards so I made some adapters that double as jumpers between the left and right side power rails for split breadboards.

Nov 2020 ⋅

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Screens from old vapes

Apr 2024 ⋅

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What is this

Oct 2022 ⋅

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As a beginner in electronics, I don't know what to solve this, any recommendations?

Dec 2022 ⋅

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Please tell me what's wrong with my my electronics. (Pardon my bad image)

May 2024 ⋅

⋅ ⋅ #Pardon-my-bad-image

Anyone know what this component is?

Aug 2024 ⋅

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Treasure or trash?

Apr 2025 ⋅

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this feels like a noob question, but what's the best way to disable this speaker without damaging the gadget?

Oct 2022 ⋅

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Is it possible to figure out what voltage this would need ?

Apr 2025 ⋅

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Mercedes Key Died

Aug 11 ⋅

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Trouble shooting with my DVD player

Jul 31 ⋅

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Dual 24W Buck Converter

Nov 2025 ⋅

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What amperage should I use for my diy drill(Dremel ish..?)

Jun 19 ⋅

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Converting a USB powered device to battery powered, looking for advice

May 13 ⋅

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A simple proyect?

May 21 ⋅

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Need help modifying a small USB rechargeable fan to use AA batteries or direct power

May 19 ⋅

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6.35mm trs stereo to dual 3.5mm stereo cable

Dec 2025 ⋅

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Wire thickness

Mar 5 ⋅

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question: how to built quiz buttons? the one that is hit first, lights up/makes a sound and blocks the other

Aug 4 ⋅

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Is this extension cord well built?

Aug 2024 ⋅

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My DIY six channels Sprinkler Controller with WiFi

Jan 2022 ⋅

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Desk-side Stock Ticker.

Apr 2022 ⋅

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Ultimate Beginner Bluetooth Speaker

Apr 2023 ⋅

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I made PCB boards into a photo frame and hung on my wall, what do you think of this? Any suggestions?

Nov 2023 ⋅

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My grandmother bought me some upgrades to my cheap $20 RadioShack tools that I got 5 years ago. I will take very good care of these tools and they should last me a lifetime.

Oct 2020 ⋅

⋅ ⋅ #20 #5

Did a little mod

Mar 2023 ⋅

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Market for a DIY Electronics Kit?

Jan 2025 ⋅

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Neat way of selecting voltages in this old transformer

Apr 2021 ⋅

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My Apple-TV remote did the thing.

May 2025 ⋅

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How can I make this mini fridge cooler?

Nov 2023 ⋅

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Is it possible to use Sandisk's usb bridge for other SSD sticks?

Dec 2024 ⋅

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Had a (somewhat) successful attempt here at fabricating a wooden circuit board! Trying to combat e-waste in my project by introducing eco-friendly materials.

Dec 2020 ⋅

⋅ ⋅ #somewhat

Has anyone thoght about using usb ports and cables for i2c?

Mar 2025 ⋅

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I want to build a pocket-sized rotary tool that runs on a standard 18650 battery. Details in comments.

Sep 2023 ⋅

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A little led strip dimmer I built

Nov 2022 ⋅

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just one of those days

Mar 2025 ⋅

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gotta love it when the the PCB diagram is found under the hood. Anyways the amp is broken, speakers buzz but no keys ring out, any advice is welcome. Wurlitzer 206a electric piano.

Nov 2022 ⋅

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Any idea what this meter is ?

May 2024 ⋅

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What is this heat resistant material?

Sep 2022 ⋅

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finally finished my 8-BIT CPU! link to it running programs below

Jul 2020 ⋅

⋅ ⋅ #8

Flight simulator autopilot input PCB I made.

Feb 2021 ⋅

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Would like to make crude oscilloscope less crude

Jan 2025 ⋅

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4-bit adder from discrete components. Let's you see the outcome of each logic gate along the way. Core idea stolen from the internet, but I designed the circuit boards myself (as a project to learn how to do that).

Apr 2021 ⋅

⋅ ⋅ #as-a-project-to-learn-how-to-do-that #4

Can I connect this 1940s phone to a regular POTS line?

Oct 2023 ⋅

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So my girlfriend got hold of one of my soldering sponges...

Apr 2020 ⋅

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My last project: RC Transmitter designed using modeling clay and photogrammetry

Jul 2021 ⋅

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52V 13.2Ah E-Bike Battery - 3rd Ever Build

May 2022 ⋅

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Just sharing a previous project of mine: Akruvia Una, a small USB keyboard/mouse combo for cyberdeck builds.

Jan 2024 ⋅

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DIY thermal imager advice

Dec 2024 ⋅

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Made a macOS Big Sur handheld

Jun 2021 ⋅

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