There are several GP3 versions:
· The GP3 has been available since 2003. GP3EZ can drive the original
GP3 but this type of
board can't accept compiled scripts. GP3EZ detects this type of board and produces an error
if you try to download a script to a GP3A. The chips in these devices are marked 16F873 or
· The GP3A1 is an interim device that uses the 16F873A. These can accept
(40 or 50 steps). In addition, GP3A1s shipped on January 8, 2008 or later have the ability to
compile scripts with analog conditions that compare two analog channels.
· The GP3A2 is the same as a GP3A1 but it has more program storage (hundreds
and twice the EEPROM of the GP3A1.