Giters

cyber-murmel / PiMoteBot

Browser controlled Raspberry Pi robot.

Geek Repo:Geek Repo

Github PK Tool:Github PK Tool

#PiMoteBot

The goal of this porject is to get a Raspbery Pi up and running with a webserver over which you can controle the motors and watch a live camera stream.

##What you need for this project

Setup

To keep it easy I use the Raspbian Server Edition, which is a lightweight version of Raspbian, but in case this link isn't working any more normal raspbian is also fine.
First we need to download the latest version of Raspbian.

$ wget https://downloads.raspberrypi.org/raspbian_latest -O raspbian.zip
$ unzip raspbian.zip

Then we insert the SD into the computer, check for the drives name and flash the image. In this example it will be sdc.

$ lsblk
sda                 8:0    0 149.1G  0 disk 
├─sda1              8:1    0   243M  0 part # 
├─sda2              8:2    0     1K  0 part # my drive
└─sda3              8:3    0 148.8G  0 part #
sdc                 8:32   1   3.7G  0 disk  
├─sdc1              8:33   1    56M  0 part #
└─sdc2              8:34   1   3.7G  0 part # the SD card
sr0                11:0    1  1024M  0 rom 
$ dd if=2015-05-05-raspbian-wheezy.img | pv -b | sudo dd of=/dev/sdc bs=128M ; sync

This is the SD card ready. Plug it in, but don't power up yet. For the first time setup you can either connect a display and keyboard, wire connected to the local network, try to get the Ip and connect via SSH or connect to it via UART/Serial.

UART

If you live in Germany like me, you can buy this USB UART adapter.

wire GPIO
black (GND) pin 6 (GND)
green (RX) pin 8 (TX)
white (TX) pin 10 (RX)
red (+5V) (leave out)

Now plug the USB end into you computer. On Windows you can use Putty. Under "Sessions", select "Serial" (very right), look up the COM port in the device manager, set the Speed to 115200 and press "Open".
On Linux (my example is for Ubuntu/Debian/Mint) you can use screen.

$ sudo apt-get install screen
$ screen /dev/ttyUSB0 115200

Now you should see the Pi booting and in the end the login promt. Login with pi:raspberry.
When logged in:

$ sudo raspi-config

Now configure the system as you please. I recommend expanding the file system, chanign the user password, changing the time zone, enabling the camera and changing the host name.
The next thing you might want to to is connect to the local netwrok. You can use an ethernet cable that you plug into your switch, but this robot is supposed to be mobile in the end there we can already now use the wifi USB dongle.

$ sudo iwlist wlan0 scan | grep ESSID
...
                    ESSID:"YourAccessPoint"
...
$ sudo nano /etc/wpa_supplicant/wpa_supplicant.conf
network={
    ssid="YourAccessPoint"
    psk="YourPassPhrase"
}
$ sudo ifdown wlan0; sudo ifup wlan0
$ ip a
$ ping 8.8.8.8 -c 10

The ping at the end will only work, if your network has a gateway to the internet and a dhcp server (which is likely). The ip a should give you your IP.
Now it's time to update the system.

$ sudo apt-get update; sudo apt-get upgrade
$ sudo poweroff

About

Browser controlled Raspberry Pi robot.