Control of Raspberry Pi _old_

Control of Raspberry Pi

Connecting the power

There are two ways to power Raspberry Pi

1. Plug in the power cable (Micro USB-B) into the power socket next to the HDMI port.
2. Connect the battery to the GPIO pins.
   1. Red cable (+5V) to pin 2 or 4
   2. Black cable (ground) to pin 6, 9, 14, 20, 25, 30, 34 or 39

Logging in

Hostnames of the robots are robot-1, robot-2 and robot-3. To log in to robot-1:

ssh pi@robot-1

Password:

raspberry

If the hostname is not recognised:

1. Check if you are connected to pinet Wi-Fi network.
2. Try scanning the network using nmap

nmap -sP 192.168.1.*

and then ssh to a discovered IP address

ssh [email protected]

Enable the pigpio daemon

If running the scripts terminates with a following error:

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% Can't connect to pigpio on localhost(8888)

Did you start the pigpio daemon? E.g. sudo pigpiod

Did you specify the correct Pi host/port in the environment variables PIGPIO_ADDR/PIGPIO_PORT? E.g. export PIGPIO_ADDR=soft, export PIGPIO_PORT=8888

Did you specify the correct Pi host/port in the pigpio.pi() function? E.g. pigpio.pi('soft', 8888)) %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

the pigpio daemon is not started. Solution:

sudo pigpiod

if still you get an error, try (changing the way to access the GPIO)

sudo pigpiod -a1

Shutting down

Safest way for shutting down Raspberry Pi is with command:

sudo shutdown -h now

If you want to reboot, use

sudo shutdown -r now