I received the v.05 PCBs a couple weeks ago and performed the usual series of tests and burn-in. So far I am extremely satisfied with the way they work - perfectly - but I'm concerned about a some heat dissipation and potentially high current draw.

I'm not yet sure if it's caused by the blue LED which I fitted onto the board, or the low-value biasing resistors...

I'll perform some more tests this coming week and then publish my results, pictures, etc.

I'm aiming to place them online for sale on Tindie within the next 2 weeks, so stay tuned for that.