Picaxe development system picaxe axe091u the picaxe axe091u development board is compatible with any size or revision of picaxe chip and allows circuits to be quickly tested using its prototyping breadboard a picaxe 18m2 chip is supplied which operates at 32mhz and has 2048bytes of program memory 512bytes ram 512bytes of table memory 2 pwm channels i2c spi and an internal temperature sensor the development board provides connectors for computer downloads and power as well as simple i