Adapter SOIC 28 pin to 25mm DIP
Description
This thing is an adapter pcb. It has an easy to make single sided pcb. Could it be drawn by hand on copper clad top side, he? It can be made using lithographic technics. Godd results, but using much nasty sometimes expansive toxic chemicals. Look here: (website is less responsive sometimes, probably selfhosted). Even etching copper can be done using vinegar from household. https://lowpowerlab.com/2012/12/15/cheap-pcb-etching-with-vinegar/ https://lowpowerlab.com/wp-content/uploads/2012/12/DSC_70191.jpg Let's do it using the CNC PCB mill. NO chemicals please. The adapter thing: It allows holding SOIC IC up to 2x14. In this case it is the PIC18F2525. It can be put on a breadboard for testing purpose. If you are fine with the 25mm distance between the DIP rows, this could be put on TTH style pcb as well. The area covered by the adapter pcb could be used for placing the quartz and some otherwise requiered components.Just put them between the the pin rows. No big deal, no big loss of space on the whole assembly , if there will be any. . Why DIY? . - I hate feeding all the greedy, cheating, fraudulent poeple on Earth by sending them my hard earned money. - In my country for a similar PCB they want me to shell out almost 8 bucks, plus tax, plus S&H.Crazy. No, not acceptable. - I dislike crap made in PRC and I wanted the adapter right now. - This was an excercise to adjust my new z-axis setup on the old rusty cnc mill. The files: Exxellon file, Gerber file for drilling and milling from top side. On the milled and drilled pcb's I have removed some tiny small and some big copper areas using a sharp knife. Before solderig the fine pitched pins I have covered the surrounding areas with Kapton tape. TODO: Making those pcb's could be (Read: they will be) refind by tinning and and put on a solder mask screen.
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