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TolDish – a DIY Omnidirectional Treadmill
Make a Swimming Robo-Snake
Approximately how long does 1 gallon of oil last?
For measuring the powder, I would use both the auger and the scale, but use the scale to weigh the powder container you are dispensing from, not dispensing to. When you are about to dispense, tare the weight of the container with the powder, and run the auger until the container has lost the weight you are trying to dispense. I would also use a PID loop to control the auger.
Make Your Own Biodiesel Processor
Cheap cyclone-based vacuum cleaner made from scratch
Peanut Butter Brownie in a Mug!
Digispark DIY: The smallest USB Arduino
Making a 28 inch wide Sander/Planer
Arduino Controlled CNC / 3D Printer Hybrid
Arduino True Battery Capacity Tester (Li-Ion/NiMH/NiCD/Pb)