Project | Kids School Control

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Adding script to crontab
09/21/2017 at 14:22 • 0 comments
To automatically start script at boot, we need to add it to crontab.
```
crontab -e
```
add the following line to the end of crontab
```
@reboot python /path/to/script/read.py
```
After reboot, script will start and listen to new cards
Schematics :)
09/21/2017 at 14:10 • 0 comments
Usb Huawei Modem
09/21/2017 at 13:33 • 0 comments
Connect usb modem and check it
```
lsusb
```
The output will be something like Huawei Technologies...

You can also check its status by accessing web page
http://192.168.8.1
Led's
09/21/2017 at 13:28 • 0 comments

Connect your led to any gpio you want + GND. In my case i used GPIO16 for green led and GPIO26 for red.
NFC/RFID Connection
09/21/2017 at 13:20 • 0 comments

Connect RFID sensor to rpi as follows
Led Connection
09/21/2017 at 13:18 • 0 comments
Connect your led to any gpio you want + GND. In my case i used GPIO16 for green led and GPIO26 for red. When you are done, test it:

Create 2 simple python scripts for green and red led with following content:
- greenled.py
```
from gpiozero import LED
from time import sleep
led = LED(16)
while True:    led.on()    sleep(3)    led.off()    led.cleanup()
```
- redled.py
```
from gpiozero import LED
from time import sleep
led = LED(26)
while True:    led.on()    sleep(3)    led.off()    led.cleanup()
```
- And then test it. If led's are glowing, then everything works good.
```
python greenled.py
python redled.py
```
Update & upgrade
09/21/2017 at 13:15 • 0 comments
```
sudo apt-get update
sudo apt-get dist-upgrade
```

Connect RFID sensor to rpi as follows