First test outdoor and first breakage !


Yesterday morning, I did my first flight test out.
2 problems:

  • My phone LG3 loses the wifi hotspotan then I can no longer control the raspberry
  • Some propellers randomly do not start or not at the same speed as the others


This morning, try again
To correct my previous problems, I tested with my wife's Honor 5C phone. No more loss of wifi ;-)
Instead of plugging the raspberry on the beak of an ESC, I plugged the raspberry on an external battery. No more problem starting the propellers.

But the tests were not very conclusive ...

The QuadCopter has indeed raised too much on one side. The other side did not stand up. So he tipped over and flipped over. This resulted in the breakage of 2 propellers.
I still struggled to interpret the results of the logs because I do not know which side it rocked. In the future, I will have to film the flight so that I can analyze it later

Here are some graphs of my simulations

First test : I lean the quadcopter forward by 30 degrees


Angle of inclination (leaning forward)


Horizontal axis is the time in ms


Values for the calculation of the pitch

Motors pulses

PS: add +1000 to the vertical axis. (600 = pulse of 1600 ms)


By leaning the quadcopter forward, we see that the quadcopter wants to compensate by increasing the speed of the 2 front engines and decreasing the 2 rear engines

Second test : I lean the quadcopter on the left 20 degrees


Angle of inclination (leaning to the left)


Horizontal axis is the time in ms

Values for the calculation of the roll

Motors pulses
PS: add +1000 to the vertical axis. (600 = pulse of 1600 ms)



By leaning the quadrupt forward, it is clear that the quadcopter wants to compensate by increasing the speed of the 2 left engines and decreasing the 2 motors on the right

Last test : I lean the quadcopter on the front and right 20 degrees


Angles of inclination


Values for the calculation of the roll

Values for the calculation of the pitch


Motors pulses
PS: add +1000 to the vertical axis. (600 = pulse of 1600 ms)

By leaning the quadcopter towards the front right, it is clear that the quadcopter wants to compensate by decreasing the speed of the left rear engine and increasing the front right engine


So the algorithm seems to work ... yet when the actual test it was not the case ....
For the next tests, it will be necessary to wait for the order of new propellers ...

Commentaires

Enregistrer un commentaire

Posts les plus consultés de ce blog

Attiny13A sleep mode

Image
Attiny : arduino's little brother Arduino is a very good card but if you need a very smaller card size or if you don't need alls pins and less memory, Attiny is a good alternative VCC =Voltage is 2.7-5.5 v Notice : Pins output high voltage is 4.3 volts with a Vcc of 5 volts. For 3.3 Vcc, pins o utput  voltage is 2.5 V  So be carefull, this is not 3.3 volts like Arduino How to program Attiny  To program attiny, just use Arduino IDE.  To do this, you will have to connevt Attiny to arduino.  Arduino will now be used as bridge Initial step Upload ArduinoISP sketch on your arduino : Select card Arduino Uno Load sketch Samples > 11.ArduinoISP  Tips : be sure to unplug all wires before to upload the sketch First step First time and only once, you have to write bootloader on Attiny : Choose 'Arduino as ISP' as the programmer prior to burning the Arduino bootloader onto the ATtiny Select card ATtinyXX Verify Board Properties...
Lire la suite

Esp-01 deep sleep mode

Image
ESP-01 Esp01 is a very small esp8266. Less pins and small size. So it is wonder for iot projects But ESP-01 consumption is around 90 mAh. So you can't power it with a battery because lifetime will be only few days. To decrease consumption you have to put esp01 in a sleep mode. Best mode is deep sleep mode which reduce consumption to less than 1 uAh. Power consumption - See datasheet Standby ~ 0.9uA Running ~60-215mA, Average ~ 80mA How to power To power ESP-01 you have to use a 3.3v battery connect pin 1-GND to ground connect pin 8-VCC and to 3.3v Found a 3.3v battery is not easy. A solution is to use 18650 battery 3.7v (or 3x AA) and drop voltage to 3.3v. To drop voltage, you can use a LDO like MCP1700-3302E/TO VIN : 2.3-6v VOUT : 3.3v Goto Deep Sleep mode To use deep sleep mode, it is pretty easy. Just add ESP.deepsleep(5*1000000) in your code to go to sleep for 5 seconds. After 5s ESP will wakeup and restart and run setup() again ...
Lire la suite

Install and configure OpenVPN on OSMC

This is a tutorial on how to install and start an OpenVPN connection when your Linux system boots. Install OpenVPN  sudo apt-get install openvpn copy your config files provides from your VPN to /etc/openvpn save your credentials in a file and modify your .ovpn config file like described below start and test it using sudo openvpn --config myvpn.ovpn use traceroute to see if vpn is working. Launch traceroute before connecting vpn and after. You should see differences in routes.   Auto-connect OpenVPN via terminal 1. Create auth.txt file inside /etc/openvpn directory via this command: sudo gedit /etc/openvpn/auth.txt Fill it with your VPN credentials: username password Save it. 2. Then open the file which you are using to establish a connection: sudo gedit /etc/openvpn/myvpn.ovpn And change this line: auth-user-pass into auth-user-pass auth.txt Save the file and change its name: sudo mv /etc/openvpn/myvpn.ovpn /etc/openvpn...
Lire la suite