EcoRadio

LoRaWAN HAT for Raspberry and EcoBoard with LCD, I2C and UART connectors.

EcoRadio is a very usefull LoRaWAN HAT for EcoBoard and compatible with Raspberry boards. The board has an U.FL connector for the Antenna and a I2C and UART connector to connect sensors. You can easly connect a LCD OLED 128x64 to display messages

The board will be available current June 2020 and in the meantime, some C++ and Python script will be uploaded to let you easly start with the board

LCD OLED

If you are using the 128x64 OLED LCD, you have to activate the I2C bus

sudo raspi-config

Then choose and activate it

• 5 Interface Options
• P5 i2C

Installation of the libary

Update your Bustar OS, install pip3 and the needed packages

sudo apt update && sudo apt upgrade
sudo apt install python3-pip
sudo pip3 install adafruit-circuitpython-ssd1306
sudo apt install python3-pil

Examples

Here are come example to start

LED

The EcoRadio board conatins 3 LED. Beside of the LEDs, there are 3 jumbers to be soldered to use the LEDs. Note LED 18 (GPIO18) only works if you use the EcoRadio board with a Raspberry. The two other LEDs work with a Raspberry or the EcoBoard board.

How to use the LEDs with Raspberry

Colse jumper SJ18 to activate D18 Colse jumper SJ19 to activate D19 Close jumper SJ10 to activate D20.

D18 is connected to GPIO18 D19 is connected to GPIO19 D20 is connected to GPIO20

You can also connect LED without resistance, to the connector J3 if you need an external LED. R20 is a 330Ω connected to the Anode of D20.

You need to import DigitalInput

from digitalio import DigitalInOut, Direction, Pull

then add the following lines

d18Output = DigitalInOut(board.D18)
d18Output.direction = Direction.OUTPUT
d18Output.value = False

d19Output = DigitalInOut(board.D19)
d19Output.direction = Direction.OUTPUT
d19Output.value = False

d20Output = DigitalInOut(board.D20)
d20Output.direction = Direction.OUTPUT
d20Output.value = False

To turn on a LED

d18Output.value = 1

To turn off a LEDD

d18Output.value = 0

RFM95 radio (LoRaWAN)

Installation of the tiny-lora python library

sudo pip3 install adafruit-circuitpython-tinylora

Examples

Here is a python script example, but do not miss to prepare a device at TTN

Preparation of your device at TTN

We assume, you have created an account at The Things Network (TTN)

Let's go to your console and let's create an application

Now, you will need to create a device. Return to your application view

click on the application you just created, select the "Device" tab

At the field Device EUI, make sure you can read this field will be generated or give an unique identifier.

Finaly, click register.

Now, edit your new device and go to the settings tab

and modify the following settings

• Activation Method => ABP
• Frame Counter Width => 16 bit
• Frame Counter Check => uncheck it

and save it.

You will later need the keys of the Device Address, the Network Session Key and the App Session Key

Have a fun and do not miss the python example script.