So about 3 months ago, maybe more, I started looking into designing a modular synthesiser. I started off building a simple VCO, and ran into problems straight away with that, which needed a solid power supply with multiple rails. So I looked into building one. It didnt take long for me to design one, based …
PCB Manufacture
UV Light Box Controller – Part 4
So, that took longer than I thought it would… Once I put the whole thing together, with the controller board and power board, it didnt work – the Darlington wouldnt switch the power for the UV Array. Some peculiarity of the ones I have, or just the fact that it wont work like that… Either …
UV Light Box Controller – Part 3
So after a little bit of tinkering with the code, changing round the pin assignments mainly, I built up a permanent version of the board in veroboard/stripboard/whatever you want to call it. And this is what we have! The left hand board has all the controller, lights, and buttons on it, and the right hand …
UV Light Box Controller – Part 2
Now, this is why i love the state of electronics at the moment – especially hobby grade ones. I can go from an idea on a piece of paper, to a working prototype, in… about 3 hours? Something like that. Anyway, in the time its taken since the last post, I have built and coded …
UV Light Box Controller – Part 1
So setting out to improve my home PCB manufacturing, I am going to build a timer controller for my UV light box – using an Arduino and a few LED’s. nothing overly complex, apart from a Darlington Transistor for controlling the UV array. So after laying down the plan, its on to breadboarding and writing …
PCB Manufacture – Part 2
So after a bit of experimentation, turns out its less the strength of the sodium hydroxide that matters, more the temperature. Using a water bath at ‘slightly warm’ (technical term :P) with a 1.5% solution, the board developed perfectly. This is after 8 minutes in the exposure box, but still, thats a 10mil trace its …