I’ve found a nice video from a member of das-labor Hackerspace in which he shows his laser exposer for photoreactive PCB’s A very nice way to make the PCB development more easy. The video is sadly commented in german but the wiki page is partially in english.

In 2010 I’ve bought a vending machine for our hackerspace . After we used it for a while with the built-in coin changer device , we noted that we need another way to pay the drinks. So i decided to build a not yet defined type of cashless payment device. After a little research we found out that the machine controller communicates with the coin changer over the MDB protocol .

The laser unit 🔗A few days ago, i opened a broken laser printer to get its laser unit. The printer was a Brother HL2030. I totally forgot to take pictures of the disassembling. The picture shows the laser unit with already dismounted top cover, laser diode (the laser beam of a laser printer is invisible and extremely dangerous for the human eye!) and controller PCB for the diode.

The first test 🔗Today i’ve made the first attempt to create a PCB with the press-n-peel foil. This is the printed press-n-peel foil:

The reason behind 🔗Yesterday i got my ordered press-n-peel foils! The reason why i want to try press-n-peel foil is that i want to do my PCBs in our hackerspace with as less steps and costs as possible. I’ve tried the toner transfer method a few times but with lousy results. The toner seems to grip to the copper as well as to the paper, no matter what sort of paper i’ve tried. Reichelt catalog pages, waxed paper, baking paper, etc.

Hello and welcome to my newly setup blog! I try to post technical post in english to give a wider audiance a chance to benefit of them, but there will be german posts from time to time. Thats it for now.

Hi, I’m Bouni and I like to tinker with all sort of stuff. I try to document here what I do so that others can profit from it as well. If you need anything, send me an e-mail to bouni-blog at owee dot de