Hing Hon EK-001 Squarewave Keyboard

Circuit Bending & Modifications

An incredible little squarewave synthesizer disguised as a Chinese made toy keyboard. Manufactured en masse under different names, brands & physical designs. Previous builds & commissions are archived in the “Builds and Commissions” page linked below, and there is a page dedicated to my Moog Circuit Bending Challenge build as well. They are prime for circuit bending, and are my most requested commission, having done 20+ over the years - primarily in the late 2000s and early 2010s.

Basic schematics for circuit bending & expanding on this device are available on this website via the pages below & in the schematics section - but keep in mind, there are multiple versions of this device, some that have similar physical appearances but different internal designs, so the bend schematics I have available may not be applicable to your keyboard.

If you ended up here looking for circuit bending info or more general Hing Hon stuff, and any questions aren’t answered by what’s available on my website, I’m happy to try and answer questions if you reach out via the contact page.