ML-OO-LORA – Option board
Easily turn your YDOC data logger into a versatile LoRaWAN® end device
An YDOC data logger is designed to build a reliable measurement history (e.g., for research, adaptive management, or billing); however, we frequently receive requests to share actual insights via LoRaWAN.
Installing an ML-OO-LORA board and matching antenna transforms your YDOC data logger into a versatile LoRaWAN end device, capable of publishing up to 12 user-selected parameters to the LoRaWAN platform of your choice as well occasionally receiving small data logger configuration snippets.
The ML-OO-LORA board comes in two editions: the ML-OO-LORA-8, optimized for European and Indian frequency bands, and the ML-OO-LORA-9, optimized for Asia, Australian and US frequency bands.
CoNSIDERATIONS
Payload format
Up to 12 sensor parameters can be included in the payload. Each parameter is encoded as an IEEE 754 single-precision float (4 bytes, big-endian, MSB first). After the parameter array, a 2-byte status word is appended. In this word, each bit set to ‘1’ indicates that the corresponding parameter is valid. Most IoT platforms offer JavaScript for payload decoding (using the DataView.getFloat32() Method). The number of parameters in the payload can be determined by dividing the payload size by 4. The final two bytes of the payload contains the status word.
Fair-use policy
You can configure the ML-417 to publish the latest acquired readings after each sensor reading session. Please observe your LoRaWAN network’s fair-use policy and set an appropriate update interval accordingly (for example, no more than once every 5–10 minutes).
Specifications
- Publishing: Up to 12 parameters
- Payload encoding: Big-endian IEEE 754 single-precision float array and status word
- Receiving data logger configuration snippets of up to 96 bytes
- Protocol: LoRaWAN v1.0.3
- ML-OO-LORA-8 bands: EU868 & IN865
- ML-OO LORA-9 bands: US915, AU915, KR920 & AS923-1,2,3,4
- Device activation: ABP or OTA (preferred)
- Antenna connector: U.FL / I-PEX
- Max TX power: +22 dBm
- RUI3 AT-interface (for diagnostic use and specific settings)
- By default, the module uses Adaptive Data Rate (ADR), but if required, you can switch to a fixed, reliable data rate using AT commands.
- Power consumption: 100uA in sleep, 90mA during transmission.
- Operating temperature: –20 °C to +85 °C
Example Configuration
- Register your device in your LNS (LoRaWAN Network Server).
- Choose the frequency band according to the region of operation
- Choose device activation method: ABP (Activation By Personalization) or OTAA (Over The Air Activation).
- In case of OTAA make sure the device EUI, application EUI and key in the ML-OO-LORA board are matching exactly with the ones in your LNS or the opposite.
- In case of ABP make sure to set the security keys and device address in the ML-OO-LORA board to the same values as suggested by your LNS.
- Only values of parameters with their “data output flags” set to the auxiliary output board will be published.
- The order of values in the payload follows the order of the data logger parameters, which can be organized thru the “Parameter overview”-menu of the data logger.
Discover the possibilities
Want to know more about what YDOC can do to help you with your quest for the right data logger? Do not hesitate to get in contact.