Hi all,
I'm thinking in a design for an universal programmer, controlled by a PIC.
I'm a bit tired to search for a programmer for every device I plan to use, so I would want to build one able to program all devices.
My thought is that it will be "open hardware" (i.e. you will be allowed to use, build, and improve it at your own, like open-source software) with an open source
software.
I will make the software to program the devices I'm using, but other people working with other devices can do the same... so in some time we could have a free
universal programmer.
I have one design in mind, with 50 pins to interface with the device. Each pin is able to handle several sources:
  - Digital output.
  - Analog output (from two analog sources) (from 0 to 25V, digital controlled).
  - Digital input (for reading data from the device).
There will be two analog sources in the design, one will act as supply voltage, and the other could be the programming voltage.
I don't know if two only analog sources will be enough so I wanted to ask you if you know any device needing more than one programming voltage (or greater than
25V).

Please apologize me, because I know this mail is not about precisely about PICs, but I also know most of you have worked with many devices...

Regards,

Carlos

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