IoTlondon - mbed based IoT Gateway talk
- 1. mbed based IoT Gateway Andrew Lindsay @andrewdlindsay IoT London Meetup, 28th March 2012 Project kindly Sponsored by SK Pang Electronics Ltd.
- 2. The Problem? Lots of wireless sensor nodes within your property May use multiple gateways or PCs for each solution Different wireless communication protocols Different end destinations Too technical for average person? May need to write code
- 3. A Solution The mbed based IoT Gateway Connecting your IoT nodes to cloud based services
- 4. A Solution Single low power wireless gateway Operates with 868MHz or 433Mhz nodes Xbee, XRF or Wifi module in wireless option socket Ethernet or Wifi internet connection Realtime clock, updated via NTP μSD socket for storing configuration Web based management Software is Open Source
- 5. What is mbed? Microprocessor development board based on NXP LPC1768 Uses ARM Cortex-M3 core 96MHz clock, 512K Flash, 32K RAM I/O includes Ethernet, SPI, I2C Digital, Analog, PWM Real time clock Local filesystem Online compiler Libraries and code samples Off-line tools available
- 6. mbed Vs Arduino mbed Arduino NXP LCP1768/ARM Atmel ATmega328P Cortex M3 core 96MHz 16MHz 512K Flash 32K Flash 32K RAM 2K RAM Ethernet Shield Online compiler Simple IDE
- 7. Gateway Hardware Baseboard for mbed module Provides power and I/O connectors Ethernet RJ45 μSD card socket RFM12B Wireless module RFM22B Wireless module option Wireless module socket for Xbee/XRF/WiFly
- 8. Gateway Hardware Baseboard for mbed module Provides power and I/O connectors Ethernet RJ45 μSD card socket RFM12B Wireless module RFM22B Wireless module option Wireless module socket for Xbee/XRF/WiFly
- 9. SK Pang Package IoT Gateway package consists of mbed and IoT Gateway baseboard Black extruded aluminium case with wall mounting brackets Laser cut end panels External antenna 9V PSU Ethernet Cable
- 10. Sensor Nodes Jeenodes OpenEnergyMonitor Custom sensor nodes Measure Temperature, Humidity Soil temperature Electricity usage Air Pressure Dust particles
- 11. Software Features File based configuration in version 1 Web based configuration in version 2 Modular OO design No code changes to add new nodes Configuration files stored on μSD card Can learns about new nodes Input from wireless nodes Output to Pachube/MQTT Open Source Available from mbed.org
- 12. Inputs RFM12B, either 433MHz or 868MHz Compatible with Jeenodes from Jeelabs emonTX from OpenEnergyMonitor Custom data formats, V1/V2 including battery status Extendable Alternative inputs/outputs RFM22 Xbee XRF from Ciseco plc
- 13. Outputs Current Outputs Pachube API V2 MQTT including Pachube MQTT beta Future Outputs Xbee XRF RFM12B WiFi
- 14. Data Routing Direct input sensor reading to an output Nodes file defines how to decode data Routing file defines where readings go Pachube datastream MQTT message Multiple readings can be batched
- 15. Web Management Simple Management interface via browser Configure network parameters, DHCP or Fixed Configure output modules List known nodes Configure nodes List known sensors Configure sensor outputs Still a work in progress
- 16. Where to next? Expand range of input payload types Ability to transmit wireless messages Equipment: fans, pumps, vent openers. Displays: emonGLCD Other cloud based data services Community involvement Custom hardware without mbed
- 17. Resources Some resources used in this project www.skpang.co.uk mbed.org jeelabs.org pachube.com mqtt.org
- 18. Thank You Thanks to SK Pang for providing the IoT Gateway http://bit.ly/IoTGateway Questions?