If I do this again I’ll definitely try one of those bare coils, I didn’t even know such a thing existed (I’m such a newb in this space). It looks like I could have saved myself about $35 had I used a coil like that. Live and learn.
For me this project has been so fun. Learning about a tech space I previously knew less than zero about has been more exciting than anything else. What started as me looking at https://clonemykey.com/ as a way to copy a proxkey II keyfob ended in me learning about various chipsets, owning a Proxmark 3, disassembling a legit proxkey II and converting it into a programmable T5577 fob… and learning about the implant culture!
And everyone on this forum has been so kind.