Find learning piano painful? Ion Piano Apprentice may do you a favour. with less than $100.
This mini keyboard/iPad dock has twenty-five keys within which fifteen white, ten black. An USB cable is used to connect it with iPad. There is also companion apps that teach you to learn basics and how to play. So you don’t need to watch videos online. Of course, you can play with it as a toy.
BOM Cost Analysis
1. keys (61) + shell: 5 USD
2. oscillators (12): 5 USD
3. frequency divider (60): 5 USD
4. Amplifier: 6 USD
5. Speaker: 1 USD
6. Volume control + audible control + sound change selector + Bass change selector: 3 USD
7. iPad docking cable: 3 USD
8. Power cable: 1 USD
Total cost is estimated at 29 USD. (All Costs are based on an estimation)