Hi PICLIST [pre-history] I know this may sound as not PIC topic but I think somebody on the PICLIST asked me for this thing, and I lost his address, so I am posting to the list in the hope that the persion who wanted this is still subscribed. BlowIT is the simplest possible programmer for AT89C2051 devices using only 2 transistors and 5 resistors. Can be buildt in an hour if really needed. Documentation http://sistudio.com/sistudio/pdf/download.html and program exe with source http://sistudio.com/sistudio/download.html If some one says [this mail] shouldnt be on the PICLIST please blame me in direct e-mail. BTW I could call AT89C2051 as dirt cheap 20 Pin UART with 2K flash so it could be considered as add-on UART for PIC projects, why not? There is a special 20pin UART from SMC, but I think it costs more than 2051 (which can be below 2 USD). antti@sistudio.com