This video shows some new IR distance sensors I have installed on my self balancing robot robot. The IR sensors are short range (5-10 cm) and should prevent the robot from running into things that the main ultrasonic sensors miss. The video also shows two servos I have installed under the robot. They are not connected yet, but they will later be used to raise the robot up again if it falls over.
Here is a video of me testing my latest DIY home built mini quadcopter at a local indoor flying meetup. This quadcopter is built entirely out of wood and cowered using Oracover. It is strong and lightweight, designed for fast and agile LOS flying outdoors.