electronics Archives - Page 4 of 4

DIY Solder Paste Dispenser

TslaFebruary 5, 2022March 2, 20243

In this post, I’ll show my DIY solder paste dispenser. It’s powered by a 12V adapter and can be operated by a footswitch(connected via banana connectors). It uses a small membrane air pump/compressor to dispense the solder paste/flux. Additionally, there is a solenoid air valve connected to the airline so the pressure can be released after you let go of the footswitch which prevents the solder paste or flux from oozing out. The pump and valve timing is controlled through a relay module by an attiny45 microcontroller.

DIY Power Supply From An Old Computer PSU

TslaFebruary 2, 2022March 18, 20240

In this post, I’ll show a DIY power supply I made from an old computer PSU. This is a great way to get a fairly powerful lab power supply with a range of different voltages for cheap. I used a breakout board I bought online as it’s much quicker and simpler than drilling holes for all the connectors into the case and then soldering all the wires.

How To Revive A Dead GPU

TslaJanuary 26, 2022August 17, 20240

In this post, I’ll show you how I fixed my dead GPU by simply heating it up. Some time ago the GPU in my old computer died(black screen). I managed to repair it by simply slowly heating it up, keeping up the heat for some time and then slowly lowering the temperature back down again. As my previous PC was quite old when this happened I got myself a new one and haven’t used the old PC very much since then. So I don’t know how much longer the fixed GPU might have lasted after that.

9V Battery Power Supply

TslaJanuary 24, 2022August 20, 20220

In this post, I’ll show a 9V battery portable power supply I made quite a few years ago by originally following this tutorial. This particular power supply uses a voltage regulator(LM317) to drop down the voltage and dissipate the energy as heat. This means it becomes inefficient at higher currents. So it is most useful to power things that don’t require a lot of power.

DPS3003 DIY Portable Lab Power Supply

TslaNovember 23, 2019March 2, 20240

In this post, I will show my DIY portable power supply. The PSU uses the DPS3003 module. This module is rated for voltages from 0-32V and currents from 0-3A. You can get other models with higher or lower voltage/current ratings. The input voltage, however, must be in the range of 6-40V and your maximum output voltage is limited to your input voltage. In my case, the battery provides around 16V to the input so the output voltage can’t go higher than that.