Search found 1707 matches

by arnaud
Mon Sep 24, 2018 12:01 pm
Forum: General discussions
Topic: Won't be able to find the high data rate (2Mb/s) channel
Replies: 2
Views: 61

Re: Won't be able to find the high data rate (2Mb/s) channel

Increasing datarate to 2M will most likely help. You can setup the Crazyflie radio from the client "connect/configure 2.0" menu. First you should connect your Crazyflie 2.0 with the client and then click on "connect/configure 2.0". Once you have written the new configuration, you should restart your...
by arnaud
Fri Sep 14, 2018 9:56 am
Forum: Support
Topic: Setting up Virtual Machine on Windows
Replies: 4
Views: 85

Re: Setting up Virtual Machine on Windows

What version of the VM and of Virtualbox are you using?
by arnaud
Thu Sep 13, 2018 8:15 am
Forum: Developer Discussions
Topic: [SOLVED] EEPROM: I2C connection [FAIL]
Replies: 10
Views: 226

Re: EEPROM: I2C connection [FAIL]

One thing that could be happening is that the bus speed is configured too fast. It is currently configured at 400KHz: https://github.com/bitcraze/crazyflie-firmware/blob/master/src/drivers/src/i2c_drv.c#L60 If your sensor does not support 400KHz I2C you can change the code above to set the bus at 10...
by arnaud
Thu Sep 13, 2018 8:04 am
Forum: Developer Discussions
Topic: Packet loss while logging at high frequencies
Replies: 2
Views: 82

Re: Packet loss while logging at high frequencies

Hi, One added comment: By default Crazyflie 2.0 has bluetooth low energy enabled and this is stealing some time from the radio to send BLE advertisement, this is limiting the max bandwidth you can achieve. You can disable bluetooth by building the crazyflie2-nrf-firmware project with the flag BLE=0....
by arnaud
Mon Sep 10, 2018 9:37 am
Forum: Support
Topic: Bootloader Stage Cannot find Crazyradio Dongle
Replies: 3
Views: 139

Re: Bootloader Stage Cannot find Crazyradio Dongle

Lets fix the button and the bootloader at the same time then :).
by arnaud
Mon Sep 10, 2018 9:35 am
Forum: Loco Positioning System
Topic: Example code autonomous Sequence not working properly
Replies: 10
Views: 488

Re: Example code autonomous Sequence not working properly

@albussimba No the orientation of the anchor do not need to be toward X. Since this seems to be a new issue, can you please create a new forum thread about it. The first things is to make sure the tracking is working properly by connecting with the Crazyflie client and flying in position hold mode a...
by arnaud
Mon Sep 10, 2018 9:20 am
Forum: Loco Positioning System
Topic: LPS and z-ranger
Replies: 2
Views: 92

Re: LPS and z-ranger

The current implementation of the kalman filter is supposed to use the z-ranger reading when the Crazyflie is close to the floor and gradually start using more LPS when the altitude grows. So there should be a good match between the z-ranger measured height and the LPS height at this transition, the...
by arnaud
Mon Sep 10, 2018 9:15 am
Forum: General discussions
Topic: Problem in logging z ranger data
Replies: 2
Views: 172

Re: Problem in logging z ranger data

There has been a log-related bug recently that could cause this to happen, are you using the very latest version of the Crazyflie firmware from git?
by arnaud
Wed Sep 05, 2018 7:44 am
Forum: Developer discussions
Topic: Log multiple variables using python client
Replies: 1
Views: 123

Re: Log multiple variables using python client

You need to create and start and add a new log configuration. Each log config corresponds to a log block and a log block is sent in a single radio packets. Radio packets are limited to a size of 32bytes maximum which limits the number of log variables in a block. The limit depends of the size of the...
by arnaud
Mon Sep 03, 2018 11:09 am
Forum: Support
Topic: crazyflie motors do not run using ramp.py
Replies: 1
Views: 59

Re: crazyflie motors do not run using ramp.py

Are you running in a virtual machine? I installed an Ubuntu 18.04 VM to test and I got the same problem a couple of time, then it started working. My assumption is that the first setpoint command sometime get lost: https://github.com/bitcraze/crazyflie-lib-python/blob/master/examples/ramp.py#L89. If...