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• Post #2978938

  Well, i've bitten the bullet. I ordered supplies for etching my own PCBs. I think my process will be as follows: The design will be printed on regular paper using a toner printer. I will use 100x150mm PCB blanks which come with a photosensitive layer already bonded. Using mineral oil, i can make the paper (mostly) transparent while the toner blocks the light. Then i will use an array of slightly UV leds to expose the board. Unexposed photoresist will be removed using a solution of sod...

• Post #2978937

  Sidenote, i swear to actual fucking god, if this printer throws a tantrum because it is not connected to the internet i will fucking gut it. Like, i'll bring an actual sledgehammer to its ass. Its a shame of the wasted money but it wasn't that expensive to begin with. I'll get over it. Fucking HP. I thought their office printers werent full of this bullshit but i guess i was wrong. This shit drives me up the fucking wall. If i ever get a new printer I'll make su...

• Post #2978936

  This will be the rough idea for exposing the boards. 12 UV LEDs (mostly UV-A) will be running at fair power, approximately 1W each. Now that I think about it, it might be a bit overkill. Or maybe not. I have no idea! Because of the high power I have bonden the LEDs to a small heat spreader plate, which are thermally coupled to an aluminium L-profile. This also mounts them in place. I got a small 330mA buck current driver for powerig them in series. In the future i'll probably add a con...

• Post #2978935

  I have just finished etching my first board. What an adventure. I discovered that my printer prints in higher resolution when printing from Windows, even though there aren't really any resolution settings to be found. I printed a test pattern on transparent paper and immediately forgot to flip it. I'm not too thrilled with the printing quality (imo its a bit smudgy sometimes) but the fine features are definitely there. I exposed the 4 different sections in 10 second intervals,...

• Post #2978934

  At this pace i'll soon be doing photolithography and making my own silicon

• Post #2978933

  So! I adjusted the parameters a bit and made sure i got good contact between the design and the board. That last one helped immensely! I can now get a crisp clear transfer of the design into the photoresist. .. And thats where a problem lies. My printer isn't the best, and it especially doesn't play well with transparent paper. Even on the darkest setting, the design just doesn't look dark enough. And it smudges a bit, even after running the cleaning program. In some pla...

• Post #2978932

  Its calibration time! My P1S 3D printer has got an XY skew somewhere, and the bed leveling compensation is moving quite a bit when traveling along the bed. So I have just performed a manual bed leveling using the adjustment screws and am now running the automatic calibration. After that I will perform the skew calibration

• Post #2978931

  Wow! This thing just quieted the fuck down after running the full calibration. I think they added noise suppression in a firmware update and i never performed it