Search found 2538 matches

by arnaud
Wed Nov 24, 2021 9:04 am
Forum: Lighthouse positioning system
Topic: Random Flyaways and Flips
Replies: 8
Views: 13249

Re: Random Flyaways and Flips

Hi, We have seen that the FPGA on the lighthouse deck can be pretty sensitive to low power spikes, it is possible that you are putting the fpga in a bad state by using powerful motors and bad batteries. We have a ticket about the issue: https://github.com/bitcraze/crazyflie-firmware/issues/695. Mayb...
by arnaud
Thu Nov 18, 2021 10:36 am
Forum: Developer Discussions
Topic: External power supply
Replies: 2
Views: 1018

Re: External power supply

Do you want to power the Crazyflie while flying or just the electronics? If you do not want to fly, USB power should be good enough to power the Crazyflie forever. If you want to run the motors, you need some battery voltage. The maximum voltage the battery can be at is 4.1 V so as long as you stay ...
by arnaud
Tue Nov 09, 2021 9:42 am
Forum: Support
Topic: CrazyFlie connects to client, but does not communicate.
Replies: 8
Views: 14178

Re: CrazyFlie connects to client, but does not communicate.

Hi, This looks like a problem with the sensor never calibrating. During the startup phase, the RED M1 LED should start to flash slowly and then accelerate (the best way to see both rate is to hold the Crazyflie in your hand while stating it, then put is still on a table, as soon as the Crazyflie is ...
by arnaud
Thu Nov 04, 2021 12:19 pm
Forum: Support
Topic: Firmware "Failed to flash" error
Replies: 7
Views: 12509

Re: Firmware "Failed to flash" error

This is strange, I have seen this error when another Crazyflie was present on channel 0 or 80, so I could imagine it happening if you are not in bootloader mode. Though, it should work if the bootloader is launched on the Crazyflie Are both blue LED blinking when the Crazyflie is in bootloader mode?...
by arnaud
Tue Nov 02, 2021 1:03 pm
Forum: Support
Topic: Firmware "Failed to flash" error
Replies: 7
Views: 12509

Re: Firmware "Failed to flash" error

Have you started your Crazyflie in bootloader mode? This is done by holding the ON/OFF switch until the M2 LED starts blinking, then both M2 and M3 should blink and you should be able to run make cload without problems.
by arnaud
Tue Nov 02, 2021 10:16 am
Forum: Support
Topic: Crazyflie can't communicate with CrazyradioPA
Replies: 2
Views: 1122

Re: Crazyflie can't communicate with CrazyradioPA

Hi, I can answer your questions but from your explaination of the problem I doubt the firmware is in cause there, not if the problem comes from a physical crash. A little bit of context about the Crazyflie first: The Crazyflie has 2 MCUs, the main MCU is the STM32 that has control of the LED on M3, ...
by arnaud
Tue Nov 02, 2021 9:32 am
Forum: Developer Discussions
Topic: Crazyflie Maximum Speed
Replies: 1
Views: 1495

Re: Crazyflie Maximum Speed

The maximum xy velocity the PID controller will accept is 1m/s by default. This is a good limit when using a stock Crazyflie 2.1. You can change this limit with the parameter posCtlPid.xyVelMax . Physically, what your drone can achieve will mostly depend of your specific drone (motor/battery/props)....
by arnaud
Fri Oct 29, 2021 7:43 am
Forum: Developer Discussions
Topic: Where to see OW memory content?
Replies: 3
Views: 1427

Re: Where to see OW memory content?

I am not sure what you are after, what is your goal? This ID is the Crazyflie firmware internal ID for the memory, it is an implementation details: this ID is used in radio packet to select the onewire memory. So this is not data that is part of the memory and you should not touch it (it likely happ...
by arnaud
Wed Oct 27, 2021 7:53 am
Forum: Developer Discussions
Topic: Where to see OW memory content?
Replies: 3
Views: 1427

Re: Where to see OW memory content?

You can read the onewire memory using this example python script: https://github.com/bitcraze/crazyflie-l ... read-ow.py. There is also an example to write memories in the same folder if you want to program your own decks.
by arnaud
Tue Oct 12, 2021 7:36 am
Forum: Support
Topic: USB bootloader doesn't start when try to update the firmware of CrazyradioPA
Replies: 2
Views: 9489

Re: USB bootloader doesn't start when try to update the firmware of CrazyradioPA

Hi, Thanks for the well written question! When launching the bootloader, the radio disconnect itself from USB and another device, the bootloader, connects. Since you are working in a VM it is likely that the bootloader appears on your host system (ie. Windows?). You need to pass the bootloader to th...