OpenFPGAduino is a open source hardware project.
The live demo
http://v.youku.com/v_show/id_XOTQ3MjkxNzU2.html?from=y1.7-1.2
http://v.youku.com/v_show/id_XMTU3MTUzNTM4OA==.html?spm=a2hzp.8253869.0.0
http://v.youku.com/v_show/id_XMTg4MjgyMDU4MA==.html?spm=a2hzp.8253869.0.0
https://www.youtube.com/watch?v=jsjrgsI-3QM
https://www.youtube.com/watch?v=g4E1hoc72DY
It includes a open source hardware platform with one core pcb, one motherbroad and sevial extention broad. It also includes linux, broad driver, FPGA project, and IDE based on nodejs. All of them are open source.
Official web site
http://openfpgaduino.github.io
Online ide demo
http://openfpgaduino.github.io/blocklyide/index.html
Official source code site
https://github.com/OpenFPGAduino/OpenFPGAduino
Training video in Chinese