Questions tagged [diy]
Do It Yourself. Build, modify, repair something without the aid of trained professionals.
363 questions
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Is my PSU design safe, what should I change?
Normally I would just go and breadboard the design out, but since this is using mains power, I would rather ask experienced people first.
I want to build a desktop 170V DC power supply to fiddle ...
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4
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Why did my homemade PCB turn out like this?
I did a first experiment with the UV-lamp + Transparency + Presensitized-Board method.
Using a randomly drawn pattern, this was my (promising but unsatisfactory) result:
What could typically be the ...
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wiring leds for car brake lights without throwing warning lights [closed]
Im working on led tail lights for my vehicle. the standard bulb is a 21w 12v bulb. what i need to try and figure out is whether or not i am able to recreate this same load using leds without a load ...
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What kind of equipment would I need to apply nonpermanent extension wires to test points of a PCB so I can access them via a microcontroller?
This is a DIY project. The title question is the first problem I'm considering, but the entire project is the goal I'm not an expert in hardware, but neither am I uninitiated. Put me at around an ...
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What's wrong with my voltage multiplier segment?
The moment I learned about voltage multipliers I was really excited. What an awesome way to kill yourself!
I found a high voltage multiplier guide and using the image below, I created my first ...
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DIY passive RFID? [closed]
I'm interested in building my own "DIY" RFID scanner and tags. For the scanner, I think I would just need:
Transceiver
Some kind of hardware polling mechanism to have the scanner scan, say, every 2 ...
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Is it possible to run 230V LED - or flourecent "spiral-tube" - lightbulb with a 9V battery?
I would like to power a 230V LED lightbulb with a 9V battery. I assume I'll have to dissect it... Surely there must be some sort of power-converter and rectifier from 230V-AC to something a lot ...
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Google Glass 3.5mm jack with battery neck strap
I'm thinking of improving my Google Glass by DIY building a micro usb to 3.5mm headphone jack with a battery connected to a neck strap out of parts from the internet.
I've already built the neck ...
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How do I get 12V 260mAh from 4x 6V 130mAh solar cell panels?
I'm trying to figure out how to build a DIY micro irrigation system for my small greenhouse. A part of that task is to figure out how I can charge 8 AA batteries using solar panels.
I've found a set ...
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How to switch a transistor when a radio signal is received?
I have a circuit which switches on by sending current to the base of one of its transistors. I'm trying to make receiver which can receive signals from a AM transmitter and send current to base of ...
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How to cheaply switch between two sets of 7-input-wires?
I am trying to make a water level sensor.
I want to use a single circuit for two water tanks. For this I need to be able to switch between two sets of 7-wire-inputs to the circuit (the 7 wires that ...
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DIY headphone preamp [closed]
I would like to make an amplifier with following specs:
input from TV RCA jack
output 1-2 3.5mm jacks
powered by USB
volume control (if possible make it somehow wireless)
As i am new to electrical ...
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How to apply solder paste with stencil in a 2 sided PCB?
I have seen lots of tutorials about how to apply solder paste using a stencil, but all of them only show how to apply the stencil to one side of the PCB. My current project is 2 sided and I would like ...
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