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projects:crazyflie:faq [2013-02-01 14:17] tobias [Why not WiFi or Bluetooth] |
projects:crazyflie:faq [2021-06-24 16:48] (current) kimberly |
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+ | This page has deprecated and will be archived. Please go to [[https:// | ||
+ | </ | ||
====== Frequently Asked Questions ====== | ====== Frequently Asked Questions ====== | ||
This is where we try to collect the most frequently asked questions and answers to them. | This is where we try to collect the most frequently asked questions and answers to them. | ||
===== Questions ===== | ===== Questions ===== | ||
- | ==== What radio is used for the Crazyflie | + | ==== For how long can it fly? ==== |
- | The Crazyflie is controlled with the Crazyradio. | + | 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. |
- | ==== Why not WiFi or Bluetooth | + | ==== How is it charged? |
- | When we where investigating what radio to use, three years ago, we compared several technologies. Here are some of our thoughts | + | 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 |
- | * Wifi | + | |
- | * + High bandwidth | + | |
- | * + Wide spread technology | + | |
- | * + Good range (up to 100-150m) | + | |
- | * - Complex hardware and software | + | |
- | * - Power hungry | + | |
- | * - Can be problems with latency | + | |
- | * - Expensive | + | |
- | * Bluetooth 2.0 < | + | |
- | * + Wide spread technology | + | |
- | * - Short range if using Class 2 device with is common in smartphones etc. | + | |
- | * - Complex hardware | + | |
- | * - Can be problems with latency | + | |
- | * Bluetooth 4.0 low energy (which was not availible when 3 years ago) | + | |
- | * + Can be pretty cheap (e.g. nRF8001) | + | |
- | * + Low power | + | |
- | * + Potential | + | |
- | * o Not so sure about hardware | + | |
- | * - Short range if using smartphones etc | + | |
- | * - Can be problems with latency | + | |
- | * - Low bandwidth | + | |
- | * nRF24L01+ | + | |
- | * + Low power and descent range (up to 100m) | + | |
- | * + Simple hardware and software | + | |
- | * + Low latency | + | |
- | * + Descent bandwidth | + | |
- | * + Cheap | + | |
- | * - Not so wide spread technology | + | |
- | The decision fell on the nRF24L01+. There are other comparable radio technology from e.g TI that we also could have used. However there is always the possibility | + | ==== 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 is the radio range ==== | + | ==== What radio is used for the Crazyflie? ==== |
+ | The Crazyflie is controlled with the [[projects: | ||
+ | |||
+ | ==== What is the radio range? ==== | ||
As with all radio communication it depends. It depends on the environment, | As with all radio communication it depends. It depends on the environment, | ||
- | ==== Is a PC required for the Crazyradio ==== | + | ==== Is a PC required for the Crazyradio? ==== |
The Crazyradio has been designed to work as a radio dongle connected to a USB port but has other capabilities. | The Crazyradio has been designed to work as a radio dongle connected to a USB port but has other capabilities. | ||
* We gave it an expansion header and it can work solely from this header, see [[projects: | * We gave it an expansion header and it can work solely from this header, see [[projects: | ||
- | * It can be connected to android | + | |
+ | | ||
+ | * We are currently working on an Android | ||
+ | * [[doc: | ||
- | ==== 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. No firmware support for this yet but it is planned. Also see "Is a PC required for the Crazyradio" | ||
- | ==== How durable is the Crazyflie ==== | + | ==== Can't I use a normal R/C transmitter? |
+ | 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. Firmware support is in beta stage. Also see "Is a PC required for the Crazyradio?" | ||
+ | |||
+ | ==== 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 to, Sci-Fi... | ||
+ | |||
+ | First steps towards a bigger Crazyflie: | ||
+ | * [[http:// | ||
+ | * [[http:// | ||
+ | |||
+ | ==== Can the Crazyflie fly autonomously (aka. autopilot)? ==== | ||
+ | Not yet, but there is ongoing development in this area: | ||
+ | * using onboard sensors (e.g. the barometer in the 10-DOF version) to achieve a "hover mode": http:// | ||
+ | * using extra sensors (e.g. an ultra sonic sensor): http:// | ||
+ | * using external sensors (Camera, Kinect, etc.) | ||
+ | * [[http:// | ||
+ | * [[http:// | ||
+ | * [[http:// | ||
+ | ==== How can I build an autonomous swarm of Crazyflies? ==== | ||
+ | * Before dealing with an autonomous swarm, maybe deal with one autonomous Crazyflie first. ;) | ||
+ | * Not yet a swarm, but at least two Crazyflies flying next to each other -> [[https:// | ||
+ | |||
+ | ==== Can I do FPV (first person view) flying with a Crazyflie? ==== | ||
+ | There is ongoing development in this area: | ||
+ | * [[http:// | ||
+ | * [[http:// |