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USB key sized Java Script computer

Usually when you are building microcontroller project (say Arduino), you need to write code first, upload to microcontroller and then run it. And if you need to change something or run different program, you need to flash new program in to it. But these things can be done differently – by using script language like Java Script. Basically this works like this – an interpreter program continuously runs on microcontroller which accepts and runs scripts written by user during run time. This gives less hustle on developing things. You don’t need development tools like compiler or download cables. Scripting language is hig level language, where lots of things are hidden and you need to write less code. Also your programs are executed immediately once typed.

Gordon Williams have started great kickstarter project where he is building an Espruino pico device which is USB memory stick size which runs JavaScript interpreter. All you need is to plug it to USB port and start playing with it. Java script is commnly used scripting language. Probably all websites have JavaSript on it, so there are tons of tutorials and examples to start with. Espruino pico is powered by STM32F401 ARM Cortex-M4 microcontroller which packs 256kb of flash and 64kb of SRAM. Little board have 22 GPIO pins available for used needs. There are also a FET available for driving high-current loads. It looks right tool for many quick projects.

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