View attachment 360539
Been working on this today to hopefully simplify this install for people
It has the 47 ohm resistors integrated as well as the glitch timing reset jumper, but most importantly all the thick components are on a section that breaks off after programming. A set of 1.27mm jumpers are provided to reconnect the usb, vreg and button section for updates. The concept is that the jumpers are only soldered into the usb board and is held on the contacts on the lower board for the duration of the update.
As it stands the thickest component is the (optional) flat flex connector for the HWFLY flex cable, the current connector is 2mm tall because that's one i've got in the parts drawers. I've been eyeing up thinner ones too. Fortunately the important pins on the HWFLY cpu flex is symmetrical so the pinout should be correct no matter what.
Total dimensions are ~18mm x ~21mm after the usb section has been detatched, This can also be ordered on a thin pcb to keep overall thickness as slim as possible, I tried to make this board as compact as feasible without making it difficult to install
This uses 0402 components making hand assembly a challenge but not impossible for someone experienced with electronics.
This is still being worked on, i havent got the routing done yet, only placement. Once it's complete (and tested) I'll release the kicad files and gerbers onto GitHub for everyone to use, build and improve upon. I dont have the bandwidth or will to sell these myself TBH. I'm busy enough as is haha.
Keen to take feedback from people, I know my work cant be perfect but i'd like to make this as good as possible