DIY Tutorial – How to Build an Arduino-Based USB Expression Pedal for Efektor WF3607

When talking about Wah-Wah pedal effect emulation, it won’t be complete if you don’t have an expression pedal controller to rock your feet up and down so you can Wacka-Wawa. Luckily, you can build one by yourself for cheap and easy. Here it is, but be careful and have fun!!

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