Wayan Sumardana, welder known as 'Tawan', created a self-made bionic arm in his workshop in the village on Bali. The 31-year-old Indonesian suffered a stroke six months ago, which left his left arm paralyzed. Sumardana developed a bionic arm from scrap and used metal parts, to help him keep working as a welder. The bionic arm functions by using signals from electrodes connected to Sumardana's scalp. The welder managed to create it using knowledge acquired during studies at a vocational school as well as searching on the Internet.

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