TiNo2

German Version

"Tiny Node": battery powered wireless sensor or wireless actor. This is the 2nd generation of TiNo. There are numerous technical improvements, mainly more flash memory and further reduction of power consumption. The antenna is now accommodated on the PCB. The project is based on Microchip Avr0 series processors (here the Atmega3208 or atmega4808).

The key points are still the same:

• simplicity
• low cost
• very small size (smaller than a matchbox)
• ultra low sleep current
• long battery life time: 5 years and more on a CR2032 cell
• long range (100m +)
• (even) simple(r) to build up
• communication security
• Plug&Play Firmware

Sensors can be almost any, like temperature, relative humidity, air pressure, altitude meter, light intensity, UV Index, movement detectors (PIR), Reed switches, etc. However sensors have to be specified to work down to 2.2V. Otherwise the charge of the battery can not be fully used.

PCBs fit into low cost PVC boxes with the size of a matchbox that are readily available on the market.

Features

new Features

• internal ceramic antenna
• support for Sensirion humidity sensors SHT4x series
• Microchip CPU Atmega4808 with configurable custom logic, event system and many technical improvements compared to Atmega328P
• 48kB Flash memory (instead of 32kB) allowing one single firmware build for all supported sensors.
• UPDI programming interface (instead of ISP)

General

• Voltage from ca. 1.8V to 3.6V
• Operates with a CR2032 cell up to 5 years
• various PCBs fitting into selected PVC boxes

Sensors

• HTU21D
• SHT21, SHT20, SHT25
• SHT30, SHT31, SHT35
• SHTC3 (new)
• SHT40, SHT41, SHT43, SHT45
• BME280 (air pressure sensor)
• DS18B20 (ubiquitous temperature sensor)
• MAX31865 (PT100 temperature Sensor)
• MAX6675, MAX31855K, MAX31856, ADS1120 K-TypeThermocouple Sensors
• AM312 (PIR movement sensor)
• I2C and SPI Bus based sensors can easily be integrated
• brightness using a LDR
• enough digital GPIOs
• enough analog GPIO's

Radio

• RFM69HCW FSK/OOK Module, RFM95 LoRa Module
• bidirectional communication
• ISM Band (Europe: 433MHz / 868MHz, US:315MHz / 915Mhz)
• 2GFSK Modulation
• Center frequency adjustable
• Frequency correction can be calibrated
• Transmit power from -2 dBm to 20dBm, 10 dBm typ.
• Link budget up to 125dB
• sensitivity -105 dBm typ.
• looong range
• RF communication encrypted
• FEC (Forward Error Correction)
• Interleaver

Baseband

• Atmel (Microchip) ATMega4808
• supports Micrpchip AVR64DD28 and AVR64DD28 MCU's
• 48kByte Flash (64kByte Flash on AVR64DD)
• sleep current < 2µA
• 1 MHz clock allows operating voltage down to 1.8V
• 16 MHz clock for gateway receiver
• I2C bus
• SPI
• Serial Port (programming and configuration Port)
• min 12 additional GPIO
• CPU can be locked to avoid reading the flash code

System / Software

• Open Source Software C++
• Software can easily be adopted individually
• supports Arduino IDE
• supports PLatformIO
• Configuration of Nodes via serial interface (FTDI Adapter)
• configuration data and calibration data reside in EEPROM
• EEPROM encrypted
• Flashing
  • using UPDI Interface
  • serial with SerialUPDI Adapter and Bootloader
• up to 4 external interrupts (i.e. push buttons) can be configured

How To Install with Arduino IDE

1. Install MegaCoreX
2. Install TiNo2 libraries
3. Install Senor libraries

Installation of MegaCoreX via Boards Manager

• Open Arduino IDE.
• Open the File > Preferences menu item.
• Enter the following URL in Additional Boards Manager URLs:

  https://mcudude.github.io/MegaCoreX/package_MCUdude_MegaCoreX_index.json
  

• Separate the URLs using a comma ( , ) if you have more than one URL
• Open the Tools > Board > Boards Manager... menu item.
• Wait for the platform indexes to finish downloading.
• Scroll down until you see the MegaCoreX entry and click on it.
• Click Install.
• After installation is complete close the Boards Manager window.

MegacoreX Manual Installation

Click on the "Download ZIP" button. Extract the ZIP file, and move the extracted folder to the location "~/Documents/Arduino/hardware". Create the "hardware" folder if it doesn't exist. Open Arduino IDE and a new category in the boards menu called "MegaCoreX" will show up.

Install TiNo2 package

• Open Arduino IDE.
• Open the File > Preferences menu item.
• Enter the following URL in Additional Boards Manager URLs:

  https://raw.githubusercontent.com/nurazur/TiNo2/master/package_nurazur_TiNo2_index.json
  

• Separate the URLs using a comma ( , ) if you have more than one URL
• Open the Tools > Board > Boards Manager... menu item.
• Wait for the platform indexes to finish downloading.
• Scroll down until you see the nurazur TiNo2 Boards entry and click on it.
• Click Install.
• After installation is complete, close the Boards Manager window.

Install Sensor libraries

Copy the following zip files into the libraries folder of your Arduino sketchbook.
BME280
SHTxx
OneWire
DallasTemperature
In case you want to use a Thermocouple, you need to install ALL of the following libraies too:
ADS1120
MAX6675
MAX31855

Then install the libraries by using the Arduino IDE:
sketch -> Include Library -> Add .Zip library

How To Install with PlatformIO

1. Install PlatformIO IDE with Visual Studio Code or install Platform IO CLI only.
2. On Windows: add the following two paths to the path variable of the environment variables:
   <User>.platformio\penv\Scripts
<User>.platformio\penv\Lib\site-packages
   

where "User" is the path to the PLatformIO installation folder.

3. Download the TiNo2 Repository as zip file. Copy the folders libraries, sensor and receiver to a project folder of your choice.
4. When using VS Code with PlatformIO IDE, open a new project and navigate to the sensor or receiver folder. Proceed with PlatformIO IDE from there.
5. When using the PlatformIO CLI from the command line, proceed as follows:
   a. open a console (on Windows: cmd.exe)
   b. navigate to the sensor or receiver folder of the TiNo2 project by using the cd <path> command.
   c. to compile, run the command pio run. The atmelmegaavr core library will be installed if not yet available. All project related libraries are downloaded and installed automatically. This is one of the big advantages over the Arduino IDE.
   d. to upload a sketch to the target device, run pio run -t upload.
   In case you need to use a port different from the default one, add the option -upload-port <port> to the command line.
   e. please refer to the PLatformIO documentation how to customize the platformio.ini project configuration file.

Fuses

run the command pio run -e fuses_bootloader -t fuses from the console. In VS Code I don't know how to invoke this.

Burning a Bootloader

This does not work with platformio at the moment. There is a bug in the platformio manager scripts. Therefore I recommend you to flash a bootloader using Arduino IDE, or, in case you know exactly what you do, use avrdude.