- How to make Line Follower Robot (video tutorial)
- How to make Line follower robot (Detailed Tutorial)
- How to breadboard a DIY USB power supply.
- How to make a cheap multi-touch pad like in the MacBook Air.
- How to make a multitouch table computer pad.
- How to make a full functioning A_C and Heater.
- How to build USB power chargers.
- how to build a portable personal heater.