### Designing a quadcopter from the scratch.

Does anyone know how to validate a quad which you have designed it from the scratch.(Starting from all the math equations and writing the algorithms)

#### Replies

• I'm not aware of any real-time software approach to this matter.

However, a multi-rotor can be suspended in the air (see the Youtube video here: http://diydrones.com/forum/topics/arducopter-tuning-guide?page=9&am...) - or mounted on a camera tripod with a loose swivel, to make tests and measurements.

I've seen videos of test-halls (U.S. and German universities), where they have a sort of cage with soft nettings around. I bet that keeps the cost down for a lot of crashes.

If you'd like to physically measure the static thrust of a given motor/propeller/voltage arrangement, using an L-shaped device (a torsion balance) and a kitchen scale can take you a long way.

I fear that I don't understand your question quite right; you might have to elaborate a bit.

• If you mean to calculate if a creation will take off/hover/fly from its weight, (number of) motors, propellers, ESCs, and battery, the answer is eCalc.

It lets you fill in your values from scratch, or select among already known equipment. I love it to death, but I don't know (all) the equations and calculations behind it.

There's even a nice help page, which you should probably start reading.

### Activity

May 13
RT @f1tenth: Say hi to our newest #F1TENTH creation for @ieee_ras_icra next week in Philly. It’s going to be huge! 😎 🔥 @AutowareFdn @PennEn…
May 13
May 8
RT @SmallpixelCar: Noticed my car zigzagged in last run. It turned out to be the grass stuck in the wheel and made the odometry less accura…
May 8
RT @SmallpixelCar: Test my car. RTK GPS worked great. Thanks @emlid for their support. https://t.co/EkQ6qmjmWR
May 8
RT @chr1sa: @kane That's @diydrones circa 2009. Still have a box of those Canon cameras that we used to strap into planes, just like this.…
May 3
RT @chr1sa: Our next @diyrobocars race is going to be outside at a real RC racetrack in Fremont on May 28. Fully autonomous racing, head-to…
Apr 30
RT @f1tenth: Our Spring 2022 F1TENTH course @PennEngineers is coming to an end with a head-to-head race as a big finale. So proud of our st…
Apr 26