This shows you the differences between two versions of the page.
Both sides previous revision Previous revision Next revision | Previous revision Next revision Both sides next revision | ||
projects:crazyflie:faq [2013-02-01 15:03] tobias [Why not WiFi or Bluetooth] |
projects:crazyflie:faq [2013-05-21 09:52] tobias [Can't I use a normal R/C transmitter] |
||
---|---|---|---|
Line 3: | Line 3: | ||
===== Questions ===== | ===== Questions ===== | ||
+ | ==== For how long can it fly ==== | ||
+ | It can fly up to 7min and depending on how you fly it the time will decrease. In a hover test we got it to fly almost 8min but during active flying it flies for about 5-6min. | ||
+ | |||
+ | ==== How is it charged ==== | ||
+ | It is charged using a standard micro-USB connector commonly used by smartphones. You probably have one of these cables at home. You can charge it from any USB unit that can supply 500mA, most computers and adapters do. It takes about 20min to charge and the green LED will tell you roughly how charged it is by how long it is lit. When it is fully lit it is fully charged. | ||
+ | |||
+ | ==== Can I hot swap batteries === | ||
+ | Yes you can hot swap batteries but you will have to come up with a different fastening then the double sided tape we use. Also you will have to charge them with a stand-alone single cell capable LiPo charger for it to be any idea. | ||
+ | |||
==== What radio is used for the Crazyflie ==== | ==== What radio is used for the Crazyflie ==== | ||
The Crazyflie is controlled with the Crazyradio. It uses the [[http:// | The Crazyflie is controlled with the Crazyradio. It uses the [[http:// | ||
- | |||
- | ==== Why not WiFi or Bluetooth ==== | ||
- | When we where investigating what radio to use, three years ago, we compared several technologies. The decision fell on the nRF24L01+ because of its low latency, low power, small PCB area/weight and low price. There are other comparable radio technologies from e.g TI that we also could have used. However there is always the possibility to experiment with another radio technology connected to the expansion header on the Crazyflie. | ||
==== What is the radio range ==== | ==== What is the radio range ==== | ||
Line 18: | Line 24: | ||
==== Can't I use a normal R/C transmitter ==== | ==== Can't I use a normal R/C transmitter ==== | ||
- | The e-sky R/C transmitters use the nRF24L01 chip, compatible with ours, so it would be possible to control the Crazyflie using the e-sky transmitters. | + | The e-sky R/C transmitters use the nRF24L01 chip, compatible with ours, so it is possible to control the Crazyflie using the e-sky transmitters. |
==== How durable is the Crazyflie ==== | ==== How durable is the Crazyflie ==== | ||
The Crazyflie is using the PCB itself as the frame. The PCB is made of [[http:// | The Crazyflie is using the PCB itself as the frame. The PCB is made of [[http:// | ||
+ | |||
+ | ==== Can the Crazyflie be used to control a bigger quadcopter ==== | ||
+ | Yes it could. All the key components are there to control a quadcopter of any size. There is yet no firmware support for this though. However imagine having it dockable into a big frame which could carry it a long way and then just release it so it can enter a small area where the big frame can't get, Sci-Fi... | ||