I had a set of Gerber files (one for each layer) for the PCB layout of piport, from Create_2_Serial_to_33V_Logic.pdf (see Serial comms for Roombas and routers), but my PCB manufacturer doesn’t know how to use Gerber files (he’s a bit slow) and will only accept PDFs.
Continue reading Creating PCB masks as PDFs from Gerber files on OS X
PCB etching, or rather routing, via CNC, as opposed to using Ferric Chloride, is not too different from 3D printing, with respect to the equipment (hardware/software)…
In addition to routing, if you prefer the old fashioned etching, CNC can be used to mark out the traces using a pen, instead of having to print the PCB masks using photosensitive boards…
Continue reading PCB prototyping
A colleague and I have been trying to reverse engineer a few different PCBs recently (a coin operated washing machine’s control board (see Reverse engineering the coin box) and a Bastl Trinity are a few examples) and we have been scanning them or simply photographing them, with the aim of either copying them, coming up with a schematic or coming up with a PCB mask, with mixed or limited results. Like this:
After watching EEVblog #675 – How To Reverse Engineer A Rigol DS1054Z, I saw that Dave explains a pretty good process, using a tripod mounted camera, light box and a back light.
Continue reading How to reverse engineer a PCB
The PCB masks from the amazing book, Sound Synthesis – Analog and Digital Techniques, by Terence Thomas.
Continue reading Sound synthesis: The PCBs – Terence Thomas
Metal Core Printed Circuit Boards (MCPCB) are used to keep high powered LED circuits cool, as the metal substrate helps dissipate heat generated by the LEDs.
However, they can also be used, as an alternative to FR4 PCBs, to create heavy, sturdy and funky PCBs for audio applications, especially if a thick 5-10 mm substrate is used (although 3.2 mm is the common maximum thickness – see below).
I got the idea after seeing this question on StackExchange: Custom/DIY Metal-Core PCB? However, MCPCB is really only useful for SMD components. Standard discrete components would need to be routed via the underside, and there would be a potential for short circuits caused by component legs coming in contact with the metal substrate.
Feature image taken from Metal Core PCB vs standard circuit boards.
Continue reading MCPCB
Following on from 555 Noisemusick kit, and Make two PDFs from Eagle two sided PCB, here’s how to make the PDF from the
.brd file. I used the version 3 EagleCAD files.
Continue reading Making a 555 NoiseMusick PCB
Following on from ArduinoBoys and others, I was having a bit of a job getting the PNG of the ArduinoBoy PCB by Trash80 (with Gameboy Genius’s fix Fixing Gameboy-powered Arduinoboy MIDI glitches) to convert to PDF with the correct scaling, in order to send to Layer Circuit, as mentioned in PCBs in BKK.
Continue reading Scaling PDF for PCB
Need to get some PCBs made, preferably from Eagle
.brd files, but not everyone accepts them and they want PDFs instead.
Continue reading PCBs in BKK