Adapter SOIC 28 pin to 25mm DIP

thingiverse

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 techniques. Good results, but using much nasty sometimes expensive toxic chemicals. Look here: (website is less responsive sometimes, probably self-hosted). 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 ICs up to 2x14. In this case, it is the PIC18F2525. It can be put on a breadboard for testing purposes. If you are fine with the 25mm distance between the DIP rows, this could be put on TTH-style PCBs as well. The area covered by the adapter PCB could be used for placing quartz and some otherwise required components. Just put them between 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 greedy cheating fraudulent people 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 shipping. Crazy. No, not acceptable. - I dislike crap made in PRC and I wanted the adapter right now. - This was an exercise to adjust my new Z-axis setup on the old rusty CNC mill. The files: Excellon file, Gerber file for drilling and milling from top side. On the milled and drilled PCBs, I have removed some tiny small and big copper areas using a sharp knife. Before soldering the fine-pitched pins, I have covered the surrounding areas with Kapton tape. TODO: Making those PCBs could be refined by tinning and put on a solder mask screen.