USB OTG FTDI (any other acronyms?)

A good while back, we made some miniature instruments for playing samples on a PC. They worked quite well and we got a bit of interest and sold a few kits online. But how technology marches on!
No sooner had we got them working with a computer, when users started asking when could they plug them into the mobile phones and Android tablets!

And following on from a discussion with Robot Steve the other night, we're thinking that making mobile-friendly versions of our miniature instruments would be a pretty cool intro to USB OTG.

No sooner had our PIC 24F USB development board arrived, than Jason from Stuff and Nonsense suggested a hardware-based USB stack from FTDI. So we got ourselves a debugger/programmer (https://uk.farnell.com/jsp/search/productdetail.jsp?SKU=1825836) and a development module (https://uk.farnell.com/jsp/search/productdetail.jsp?SKU=1825829) off the Farnell website.

That's right - next day, 8am, sure enough there was a thump-thump-thump on the front door and a beaming postie with a parcel covered in Farnell/element14 livery. I guess we really need to do something about fixing that doorbell.