Saturday, June 14, 2008

Build Day 2

Well we bought a few right angle clamps to keep the frame square, but after attaching the first one to the frame and then checking the other side with a tri square we bought.... things were not aligning. It turns out the expensive tri square we bought is not quite square....

We then cut the the 4 strengthening bars, drilled the holes for them and attached them to the frame.

We were going to rivet the bars to the frame but thought it would be best to bolt them on as we might want to use the same bolts for the landing gear or camera mount at a later stage.

Well now with the frame pretty much done and only weighing 296g things are looking good in the weight department. We hoping for a weight of not too much more that 1kg as we would like to hover at about half throttle. We have done some testing and it seems with the 4 motors we should get about 2.4kgs of thrust.

Mock up with right angle clamps.

Mock up of strengthening bars.

Mock up with holes drilled.

Final outcome after it had all been bolted together.

Just a pic to for us to keep track of weights...

Well now that most of the frame is done, we need to start working on some of the electronics. First thing we will be doing is getting the electronic speed controlers that power the 3 phaze motors, to run off our microcontrolers (Atmel Mega8's) we will be generating a PWM signal that will tell the speed controler at what speed to run the motor at...

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