Search found 1692 matches

by tobias
Fri Jul 06, 2018 12:48 pm
Forum: General discussions
Topic: Replace motors with brushed
Replies: 4
Views: 117

Re: Replace motors with brushed

The Crazyflie 2.0 uses brushed motors and can be exchanged but you probably have to upgrade the battery as well. Also make sure the motors spin in the correct direction. If not you can change the cables in the connector.
by tobias
Wed Jul 04, 2018 7:34 am
Forum: Support
Topic: Crazyflie 2.0 Problem - I2C Connection FAIL (Red LED blinks 4 times)
Replies: 4
Views: 87

Re: Crazyflie 2.0 Problem - I2C Connection FAIL (Red LED blinks 4 times)

The resistor is a pull-up for the I2C port that goes to the EEPROM and the deck port. If you will hard code and not use the EEPROM you don't need the resistor however if you get a deck that uses the I2C buss this must be soldered back.
by tobias
Mon Jul 02, 2018 8:51 am
Forum: Support
Topic: Crazyflie 2.0 Problem - I2C Connection FAIL (Red LED blinks 4 times)
Replies: 4
Views: 87

Re: Crazyflie 2.0 Problem - I2C Connection FAIL (Red LED blinks 4 times)

That is an unlucky crash. If you have soldering skills, soldering a new EEPROM and resistor should solve the problem. You could also change the firmware and return true in the EEPROM test. The CF2 will then default to hard coded settings which you could hard code yourself.
by tobias
Mon Jul 02, 2018 8:40 am
Forum: Bitcraze
Topic: debug configuration
Replies: 2
Views: 45

Re: debug configuration

You entered the Hard fault handler before reaching main. Probably because you flashed a bad FW.
by tobias
Mon Jul 02, 2018 8:38 am
Forum: Quadcopters
Topic: How to get the quadcopter avoid obstacle with a sensor?
Replies: 5
Views: 1467

Re: How to get the quadcopter avoid obstacle with a sensor?

Soon we will release the multi-ranger deck that would be able to do just this.
by tobias
Mon Jul 02, 2018 8:33 am
Forum: Support
Topic: Crazyflie 2.0 - Power Button Fell Off - Two Blue Lights Stuck on (M3 and M2)
Replies: 6
Views: 103

Re: Crazyflie 2.0 - Power Button Fell Off - Two Blue Lights Stuck on (M3 and M2)

It sounds like the ground pad as you say. The question is why it doesn't boot correctly, even if the button was shorted this is not the normal behavior. As the signal pad is still intact it should be possible to try and activate bootloader mode by shorting it to GND. Have you tired this and what is ...
by tobias
Wed Jun 20, 2018 9:50 am
Forum: Developer Discussions
Topic: How to utilize zranger with different sonar
Replies: 1
Views: 48

Re: How to utilize zranger with different sonar

The architecture needs some love but basically you need to fill in the height value as called from here in the sensors_cf2.c. The fill in the height estimation as in zranger.c
by tobias
Thu Jun 07, 2018 10:02 am
Forum: Loco Positioning System
Topic: The drone drifts when flying using position hold mode
Replies: 3
Views: 99

Re: The drone drifts when flying using position hold mode

Hi Sun and welcome! I'm not the expert but I think I know what the problem is. When using a joystick to control in position hold the Crazyflie 2.0 is actually controlled in velocity mode and if the input from the joystick is not exactly 0 it drifts away. You could try to control it from one of the e...
by tobias
Tue Jun 05, 2018 7:44 am
Forum: Developer Discussions
Topic: Optical Flow Sensor - How is it Assembled?
Replies: 2
Views: 87

Re: Optical Flow Sensor - How is it Assembled?

You probably have to contact Pixart to get the details for production. It probably requires you to sign an NDA with them as well. If you only will be making some prototypes we have successfully soldered the sensors using hot-air and by heating the board from underneath (not blowing on top of the sen...
by tobias
Tue Jun 05, 2018 7:05 am
Forum: General discussions
Topic: crazyradio disconnect over 1 meter away
Replies: 4
Views: 169

Re: crazyradio disconnect over 1 meter away

Try to change the channel en rate to e.g. channel 90 and 2Mbit datarate.