Atmega16u2 virtual serial example using LUFA Library

Shane of Wattnotions has published a new build, an Atmega16u2 virtual serial LUFA board: What I wanted the LUFA library to do was pretty specific – the atmega16u2 should show up as a virtual serial port so that the computer can connect and read data from it like any other serial port. All of the other […]

Making PCB vias with conductive ink

Here’s an alternative method for making PCB vias using conductive ink from Diyouware: We developed an alternative method for making PCB vias through-hole using our robot. As you probably know the traditional DIY method consists in threading a wire through the holes and then soldering it and then cutting it off. For example, if we have 100 vias in […]

Making a PCB business card

Ilia Baranov has designed a reference business card: Back of card includes: Ruler in both 1/10″ and mm. AWG Hole size gauge (not super accurate due to plating, but that is unavoidable) Resistor/capacitor/inductor/diode sizes Common surface mount component sizes Common electrical symbols and shortcuts/equations Common conversions Trace size comparison Quote from Dune! Project info at Mr.Robot […]

Homemade x-ray inspector reveals PCB secrets

John McMaster has written an article detailing his homemade x-ray scanner: In some previous posts I talked about getting an x-ray head working, reverse engineering an x-ray sensor, and working with LinuxCNC.  In this post I put them all together so that I can take a bunch of x-ray snapshots across an entire PCB.  This […]

Pro mini shield

Albert blogged about his mini pro shield project: Just finished my little mini pro shield which makes it a little easier to use the mini pro with projects and it now also makes the mini pro easier to use with test and trial projects. The shield has a 3.3V and 5v power supply on board […]

SoHa SMART first logo PCB design & manufacture

‏ @josephpcrabtree tweeted, “New learn-to-solder badges for @SoHaSMARTMaker. PCBs from @dangerousproto DirtyPCBs” This is a big day for any maker space when you learn to design and manufacture your own PCB. We are very proud of our circuit design and end result. We will use these in all of our Learn To Solder Classes going […]

DirtyPCB’s based project: TDR pulse generator for testing coax

Marcus Jenkins blogged about his TDR pulse generator build: I saw an excellent YouTube video from Alan W2AEW and thought I’d have a go at making a prettier version of the tool myself. After all, checking 50 Ohm coax cables is a pretty common need for an amateur radio enthusiast. Alan’s video says it all, but here’s […]

Systematic PCB verification approach

From the comments on our previous PCB Checklist post, George Hadley shared this helpful checklist for submitting a PCB to a fab house: Systematic PCB Verification Approach (PDF!): 1. Parts completion check: 1. All major components included? Microcontroller/FPGA/SoC/Microprocessor/CPLD? Power supply/regulation? Sensors? User interface elements? (LCDs, buttons, switches, etc.) Actuator drivers and control? (Motor control? LED constant current drivers? […]

DipTrace export settings for Dirty PCB

As a follow up to the PCB layout design with DipTrace post, KF5OBS blogged about on  how to set-up DipTrace to export a PCB layout correctly for Dirty PCB: Dirty PCB offers – as the name implies – dirt cheap PCB manufacturing. The trick is a very low profile and a straight-forward system that needs minimum […]

PCB layout design with DipTrace – An overview

KF5OBS writes: DipTrace is a sophisticated schematic and PCB layout software. I had it installed on my computer for over a year but have never really used it. Since I needed a super simple PCB for some 78XX / 79XX type linear regulators, I decided to use this opportunity for my first steps with DipTrace. […]

PCB Checklist – What to check before you submit

Baldengineer’s checklist for submitting a PCB to a fab house: Recently I’ve been expanding my retro game collection to include game cartridges imported from Japan. The problem is that I don’t have Japanese game systems (yet). So I’m creating an open source adapter to convert Famicom carts to the NES. Before I submit the PCB to […]

Free PCBs massive fail, now shipping

Late last year I spun off the Dirty____ source code into a free PCB fulfillment system (Filthy Hole). The system is modeled after Amazon.com – print packing lists and prepaid shipping/address/customs form on 10x15cm labels. It is way easier for the back office to pick and pack, and follows the same workflow as Dirty PCBs. […]