In this project we will design and build an add-on upgrade module to improve the DROK DC to DC Converter Module by improving the accuracy of the output voltage reading, adding output current monitoring and a solid state on/off switch at the output. Below are the links to download the schematic, PCB artwork and component […]
DROK DC to DC Step Down Buck Converter Module
In this review I will take a close look at the DROK DC to DC Step Down Buck Converter Module which uses a LM2596 Buck Converter IC The module also includes a digital voltmeter which can display either the input or output voltage. The output voltage is set by two push buttons. After fully testing […]
Build a Function Generator Part 3
This is an update to the Function Generator project in which I discuss some modifications/enhancements following feedback from my viewers. The latest version of the schematic which includes these changes can be downloaded from the link below along with a full parts list: Latest Schematic Updated parts list Updated parts list
Build a PCB UV Exposure Unit
In this video I show you how to make a UV Exposure Unit which can be used to produce printed circuit boards. We will use a cheap UV insect killer unit and modify it to do the job. For this project I used a 20W High Powered Insect Killer from Maplin (Product Code N98GR) cost […]
Build a Function Generator Part 2
This is part 2 of the building a function generator. We cover the output stage and discuss some changes to the original design. Finally, we build the project in to a case and test. Below are the links to the latest main schematic diagram and a second file for the Display and Arduino schematic. Also […]
Build a Function Generator – Part 1
This is the first part of a project in which we will design an build a function generator capable of providing a sine, triangle, square, pulse and ramp wave-forms. We will be using the XR2206 function generator I.C. A 8 digit 7 segment display will be used to display the frequency. The software for the […]
Upgrade to 5 Volt Precision Reference Standard – Part 2
This is Part 2 of the upgrade project to allow the 5 volt Precision Reference standard covered in my previous video to be switched to give 100mV, 1V, 5V and 10V outputs. In this final part I will cover the final build on a custom PCB, calibrate and box the unit. The link to Part […]
Making your own PCB the easy way
In this tutorial I show you from start to finish how to make your own custom printed circuit board using Photo Etch PCB. Materials used: Jetstar Standard (Ver. II) A4 Inkjet clear film – specially formulated inkjet film for the production of artwork. Photo Etch PCB (Single-Sided Epoxy Glass) Ferric Chloride Etchant (granules of ready […]
5 Volt Precision Reference Standard Upgrade – Part 1
This project will be in two parts. This first part here covers the circuit upgrade to allow the 5 volt Precision Reference standard covered in my previous video to be switched to give 100mV, 1V, 5V and 10V outputs. We will test the upgrade circuit on a breadboard and show how it can be simply […]
Design & Build 5 Volt Reference Standard
This project is for the hobbyist to design and build a 5 volt precision voltage reference standard that requires no adjustment but still has an accuracy of ±0.01% or better and a temperature coefficient of ±3 ppm/ºC. Also incorporating an auto switch-off and battery monitor feature. PARTS LIST: 1 x Intersil ISL21009BFB850Z, Precision 5V Voltage […]