Archive for February, 2010

25 Feb, 2010

PIC Binary Dice – 12F675

Posted by: Raynerd In: PIC Binary Dice Code 12F675

Simple MikroC code for a binary dice on a 12F675. I was looking for a nice idea for a small project group of students rather than just flashing leds. No embellishment, just a straight forward code! While no button is pressed it is counting 1-6 fast, when the button is pressed it displays the number [...]

18 Feb, 2010

ATX Variable supply circuit.

Posted by: Raynerd In: Converting ATX PC Power Supply

A continuation of the ATX PSU conversion, I wanted to add a fully variable output and followed these notes to build a suitable circuit on breadboard for testing purposes: http://www.wikihow.com/Add-Variable-Voltage-to-Your-ATX-Based-Bench-Power-Supply The main component is the LM317T voltage regulator. Here is the trial circuit: The pot is quite sensitive and I need to sort this out [...]

I was in need of a 5v power supply for my microcontroller circuits as the supply I have was not working with them for some reason and I was not happy keep using batteries. There are many write-ups online so if your interested, do a google and don`t trust this. This is just a log [...]

15 Feb, 2010

Binary Clock – circuit part-1

Posted by: Raynerd In: PIC - Binary Clock

This is Part 1, the start of the circuit for the clock case. Not sure how it will be enclosed yet, infact there are quite a few unknowns as I am also unclear how I`m going to connect the 25 led anode pins to the PIC and make it look “neat”. A work in progres…. [...]

14 Feb, 2010

Binary Clock Aluminium Housing

Posted by: Raynerd In: PIC - Binary Clock

Aluminium housing for the binary clock….

13 Feb, 2010

Binary Clock 16F887 PIC Project

Posted by: Raynerd In: PIC - Binary Clock

I`ve been working on this code on and off for the last few weeks. Finally got it running on breadboard a few hours ago thanks to my good friend who helped me point out my errors in the circuit. This may have some machining now as I have a case to build! Part 1 at [...]

10 Feb, 2010

Bi-colour LED Blinker – 12F675

Posted by: Raynerd In: PIC - LED Blinker

A very simple project but it makes a nice introduction to coding! It is actually just two pins at logic 1 independently and then together so on the development board it is simply two leds flashing but if you put it with a bi-colour led (maplin sell these as tri-colour but they are actually only [...]

I have been building a binary clock lately and although in reverse order, here is the design template for the final case/display build. All will become clear when I post up my PIC design and prototype of the EasyPic dev board. Binary Clock – design templates


  • Steve Richardson: Pretty cool stuff! I work with some real talented machinists and they are gonna dig your website!
  • Mike: Hi.where did you purchase the plate from. Been looking for a good stockist. I love your idea and would like to make one for my boxford. Also, sorry
  • Don bath: Thanks for the reply,currently I am making the escape wheel arbour and back cock plate ready for the next phase of testing .Your comments regarding th

Welcome to Raynerd.co.uk

I`ve always wanted to learn more about engineering and electronics and my list of projects both complete and ongoing has been growing over the past few years. I like to document my progress more for my own understanding as much as anything, it helps keep me on track. I hope you can find something of interest to you, my clock building project is my priority but as you can see, I have many other builds I`m working on. Please leave a comment, it is nice to see people are reading!