Quality 3-Ch Relay Expansion Board Designed For Jetson Nano, Optocoupler Isolation It will enable your Jetson Nano to control high voltage electrical appliances. 

• Works with both 4GB and 2GB jetson nao variants
• Standard 40PIN GPIO header, directly pluggable onto the Jetson Nano
• Incorporate quality relay component, max load: ≤5A 250V AC or ≤5A 30V DC
• Optocoupler isolation, prevent interference from the high voltage circuitry
• Indicators for monitoring the relay operating status
• Control pins of relays are configurable via jumpers
• Acrylic bottom panel, isolating the Jetson Nano from the relay expansion board
• Download Schematic Diagram

Download Demo Codes

Open a terminal, download the demo codes and unzip it

sudo apt-get install p7zip
wget https://www.waveshare.com/w/upload/f/f8/3-ch_Realy_for_jetsonnano.7z
7zr x 3-ch_Realy_for_jetsonnano.7z -r -o./3-ch_Realy_for_jetsonnano
cd 3-ch_Realy_for_jetsonnano

Testing

Hardware configuration: set the jumpers on D21, D20, D26 (default setting) Go to the directory 3-ch_Realy_for_jetsonnano and run the following commands:

sudo python test.py

Expect result: The Relay channels onboard are toggled and the LEDs indicate according to the status of the channel. You can press Ctrl+C to

Web Control

The example use python Web framework to control the Relay board.
Open a terminal and run the following commands：

sudo apt-get install python-bottle
cd python-bottle
sudo python main.py

Open a chrome browser, and go to page [IP of Jetson nano ]:8080.
for example: 192.168.1.11:8080
Then you can click the icon on the Webpage to troggle the relay.

Write a review