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projects:crazyflie:mechanics:assembly [2013-04-24 21:32] tobias [Maximizing performance] |
projects:crazyflie:mechanics:assembly [2013-06-03 23:26] foosel [What do you need to do] |
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* Scissors | * Scissors | ||
* Tweezers and a clamp or third-hand can come in handy | * Tweezers and a clamp or third-hand can come in handy | ||
+ | |||
+ | ====== Check the electronics ====== | ||
+ | Before you go ahead and assemble the Crazyflie check the Crazyflie control board and the Crazyradio electronics: | ||
+ | {{: | ||
+ | |||
+ | 1. Attach a powered micro-USB cable to the Crazyflie control board. It should power up and blink 5 times with the green LED. After that the green LED should be fully on and the red LED should blink. | ||
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+ | 2. Attach the Crazyradio to a computer and follow the [[http:// | ||
+ | |||
+ | 3. When the cf-client is installed and the Crazyradio is working it should be possible to connect to the Crazyflie using the connect button in cf-client. Test that you can connect. It is also a good time to update the firmware now using the [[http:// | ||
+ | |||
+ | When all these tests passed go ahead and start the assembly. If they did not pass visit the forum and open a support thread if you can't already find one describing the problem. | ||
====== What do you need to do ====== | ====== What do you need to do ====== | ||
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- | 2. Twist the two motor wires together so they are easier to handle | + | 2. Twist the two motor wires together so they are easier to handle |
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- | 3. Thread the twisted motor wires through the motor mount arm section. | + | 3. Thread the twisted motor wires through the motor mount arm section. |
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- | 8. Repeat step 2-7 for the rest of the arms M2, M3 and M4. | + | 8. Repeat step 2-7 for the rest of the arms M2, M3 and M4 and remember to alternate the white and black wires according to the [[http:// |
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- | 9. Attach the propellers (see drawings below for mapping). We recommend you sorting out the best propellers. [[projects: | + | 9. Attach the propellers (see drawings below for mapping). |
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- | 11. Before you power it on visually inspect your soldering for shorts. After that power on and check that all motors spin during start-up and in the right direction. | + | 11. Before you power it on **visually inspect your soldering for shorts**. Make sure any copper from the wires are not sticking out so they could short to **either of the two resistors next to M3 or to anything else**. You can also use a ohmmeter to check for a resistance of about 2 ohms between each pair of pads. After that power on (carefully push in the button with your fingernail - it is **not** a slide switch) |
+ | {{: | ||
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====== Video ====== | ====== Video ====== | ||
+ | Assembly video using new motor mounts | ||
+ | {{youtube> | ||
+ | \\ | ||
+ | \\ | ||
+ | Old assembly video using 3D printed motor mounts | ||
{{youtube> | {{youtube> | ||
+ | |||
====== Motors and propellers ====== | ====== Motors and propellers ====== | ||
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- | ====== Maximizing performance ====== | ||
- | To get the best performance out of the Crazyflie we recommend you to optimize it. Below you will find some tips | ||
- | === Balancing propellers === | ||
- | {{: | ||
- | Vibration is one of the biggest reasons the Crazyflie performance is degraded. Vibration effect the gyro and accelerometer measurements making them more noisy and inaccurate. Vibration is mainly caused by unbalanced propellers but can be caused by a bent motor axis as well. Balancing these small propellers is extremely hard and we are still searching for a good way to do it. An easier way to get balanced propellers are to sort them and categorize them according to their vibration. This can easily be done by using the spare motor and a normal 1.5V AA battery to power it while testing each propeller. After this has been done use the propellers with the least vibrations. | ||
- | === Centre the battery weight === | ||
- | Getting the [[http:// | ||