Every Tuesday we give away two coupons for the free PCB drawer via Twitter. This post was announced on Twitter, and in 24 hours we’ll send coupon codes to two random retweeters. Don’t forget there’s free PCBs three times a every week: Hate Twitter and Facebook? Free PCB Sunday is the classic PCB giveaway. Catch […]
Category Archives: PCBs
Eurorack power supply from Dirty PCBs
ntractiv posted pictures of his Eurorack power supply from Dirty PCBs. Via Flickr.
free PCB drawer: Box of PCBs
Bus Pirate v3.8 PCB and USB IR Toy v3 PCB are available now in the free PCB drawer. Every Friday we give away PCBs via Facebook, via Twitter on Tuesday, and the blog every Sunday. Don’t forget there’s free PCBs three times every week: Free PCB Sunday. The classic. Every week, get free PCBs right here on the […]
Cutting Mylar solder stencils from ExpressPCB and EagleCAD files
Juan Chong has posted a detailed tutorial on how to cut out solder stencils for both ExpressPCB and EagleCAD designs on a laser cutter: In this post I’ll be going over how to cut out solder stencils for both ExpressPCB and EagleCAD designs on a laser cutter. I recently had a need to create some stencils […]
9V to 48V DC-DC converter
Konstantin Dimitrov over at Electronics Lab writes: This project is a 8-12Vdc to +48Vdc DC-DC converter based on MC34063 switching regulator. It’s a simple project of a DC-DC converter to make a phantom power supply for professional microphones. It can deliver 15-20mA at 48VDC. It ‘s based on MC34063 DC-DC step-up, step-down and boost converter. […]
Box of new PCBs from DirtyPCBs: Raspberry Pi add-on boards
TonyD posted pictures of his latest batch of PCB’s from DirtyPCBs: In the box where 4, yes 4 sets of PCB’s. In the photo, the big PCB at the back is RPi-X PIAC. On the photo front row, on the left is MiniPiio LED Breakout, in the centre is MiniPiio BOP4 and to the right is MiniPiio […]
Open source PCB ruler v1.0
An open source PCB ruler by Hemal Chevli, that is available at Github: PCB ruler with different foot prints ,SMD proto-typing area, tables, various AWG size holes and inches and cm scale.
RTCC shield kit with a prototype PCB from Dirty PCB’s
@Velleman_RnD tweeted, “RTCC shield kit. Proto pcb made by the good people from Dirty PCB’s”
Designing a high voltage power supply for Nixie tube projects
A PCB layout for the switch-mode HV PSU by Jan Rychter: I’ve posted a page describing the design of a HV PSU (High-Voltage Power Supply) that generates up to 220V from a 12V input. In addition to that, it also provides 2*Vout (so, up to 440V, for dekatrons), and two outputs for powering digital logic: 5V […]
The deal with Dirty Cheap Dirty Boards PCBs
This sad FACE FRAME! documents the moment Ian found out Dirty PCBs hit Hacker News, Hack a Day, etc. Here’s the story behind our joke PCB site… A few months ago there were some comments in the forum about various PCB services making ‘crap’ $0.90 boards. Later we posted a picture of our own $0.20 […]
Dirty Circuits PCB routing for open hardware designs
At Dangerous Prototypes we have a team of amazing PCB designers. We crank out a lot of boards publicly and privately, but even we can’t keep these hungry routing addicts busy all the time. Now we’re lending our routing skills to you for your open hardware project through a new site: Dirty Circuits. If […]
PCBs made using a laser cutter
Joebell wrote this Instructable detailing the process of making a double-sided PCBs with a laser cutter: With a little practice, you can make excellent double-sided PCBs by combining a laser cutter with chemical etching. The basic idea is: the laser cutter blasts away spray painted etch resist, then chemicals eat away the exposed copper. Once the copper […]
DIY PCB manufacturing tips
Acidbourbon offers some tips on PCB manufacturing at home. I’ve been manufacturing my own PCBs in my basement now for more than two years. In this article I do not want to give yet another explanation of the toner transfer method, but give you an overview of the techniques that proved to be of value […]
DiyouPCB low-cost PCB printer for photoresist
Charlie and Victor from Diyouware write, About a year ago my brother and I engaged on a quixotic project to build from scratch a low-cost PCB printer for photoresist. Finally we did it using a Blue Ray optical pickup (PHR-803T) and his UV laser/electronics to sensitize Dry-film. The optical pickup is used through his own […]
Open source PCB ruler
Hemal Chevli has designed this open source PCB ruler, that is available at Github: PCB ruler with different foot prints , SMD proto-typing area, tables, various AWG size holes and inches and cm scale.
W5500 Adapter v1
eHaJo created a pcb with the new Wiznet W5500 chip (machine translation), SPI to Ethernet, and with the brand new atmel ATXMEGA8E5 chip on the pcb for the unique mac-address.
Microchip TQFP-100 breakout board PCB build
Samual posted picture of his Microchip TQFP-100 breakout board PCB build in the forum.
KiCad: CERN’s contribution to Free/Open PCB design
Bearmos writes, “Looks like more good things are going to be coming to KiCAD, thanks to the folks at CERN. It sounds like they’re committing a programmer full time for one year to the project.” One of the main issues the open hardware community must overcome to reach a maturity level akin to that of […]
Simple component size and silkscreen reference board update
Philip posted an update on his component size and silkscreen reference board we covered previously: After the reference board went over well, I also made a set of smaller boards to show the different soldermask colors. The boards all have a very similar front with exposed pads, traces and silkscreen both on copper and off copper. […]
Razen PCB CAD tool update
rng posted an update on his Razen PCB CAD tool we posted previously: Razen is now in open beta for Windows, Mac and Linux. I received a bunch of useful suggestions from people testing the alpha versions, and have improved Razen significantly since I first posted it. If you’re interested in giving it a try, the latest […]