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Specification
nurazur edited this page Jan 21, 2020
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- Operating Voltage from ca. 1.8V to 3.6V
- Operating Temperature -40 to +85 degC
- Operates with a CR2032 cell up to 5 years
- various PCBs fitting into selected PVC boxes (PVC material limits operation range!)
- RFM69CW, RFM69HCW, RFM95, CC1101 Module
- bidirectional communication
- ISM Band (Europe: 433MHz / 868MHz, US:315MHz / 915Mhz)
- 2GFSK Modulation, 19200 Bd, FM deviation 30kHz
- Center frequency adjustable
- Frequency correction can be calibrated
- Transmit power from -18 dBm to 20dBm, 10 dBm typ.
- Link budget up to 120dB
- sensitivity -105 dBm typ.
- range t.b.d., but its looong!
- ground plane antenna (default) or external antenna
- RF communication encrypted
- FEC (Forward Error Correction)
- Interleaver
- Atmel (Microchip) ATMega328p-au
- 32kByte Flash
- sleep current ca. 0.5 µA without timer (remote control)
- sleep current < 2µA with external crystal 32.768kHz
- sleep current ca. 4.5µA with internal RC oscillator
- 1 MHz clock allows operating voltage down to 1.8V
- 8 MHz clock for gateway receiver
- I2C bus
- min 4 additional GPIO
- Battery monitoring during transmit burst
- CPU can be locked to avoid reading the flash code
- HTU21D
- SHT21, SHT20, SHT25
- SHT30, SHT31, SHT35
- I2C Bus based sensors can easily be integrated
- 4 digitale GPIOs
- Open Source Software C++
- Software can easily be adopted individually
- Programming tool is Arduino IDE
- rugged Bootloaders
- Configuration of Nodes via serial interface (FTDI Adapter)
- python tools for configuration / calibration (semi-interactive terminal program)
- configuration data and calibration data reside in EEPROM
- EEPROM encrypted
- Flashing
- using ISP Adapter or
- serial with FTDI Adapter and Bootloader
- up to 4 external interrupts (i.e. push buttons) can be configured
- RF traffic encrypted with individual Passphrase
- CPU can be locked to avoid reading the flash code
- EEPROM encrypted to avoid tempering of configuration
- "Rolling Codes". Together with Encryption it will be VERY difficult to "copy and paste" a RF Pattern.