Original link: http://wwj718.github.io/post/%E7%BC%96%E7%A8%8B/microblocks-dotpack/
I also find it fun work in the constrained world of microcontrollers. 
– John Maloney Foreword dotPack is a programmable pixel schoolbag that Yingli Education will release soon. I mentioned earlier in the programmable school bag: The programmable school bag (led matrix screen) brings a completely different
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