all about sensing at sensemakers march 2017
TRANSCRIPT
All about Sensors at Sensmakers AMSTERDAM
Jonathan Carter co-organiser of Sensemakers, co founder of Glimworm , Glimworm Beacons
and now founder of “MeasureEverything”
WHY NOW?
We are at a very exciting juncture in the history of the Internet Of Things
Recently technology has advanced to remove the last barriers to sensing our own environment
For most of the ‘old hands’ we can turn our attention back to the questions that we posed in the first place
Understanding and choosing sensors is now the most important decision you have to make
The journey of sensor data
Sense something (?) [this is the sensor]
| Collect and send to the cloud
[This is the arduino (or similar) and Lora/ BLE/WIFI] |
Get data Store and process in the cloud [MQTT, Bluemix, Amazon, own system]
| Analyse , report, present, action
[maps, api, apps, watson, etc….. ] |
END
Garbage In Garbage out
I Recently I made a product set for simple sensing “Measure Everything” and in the process I had to actually come to conclusions about what sensors to use for the most simple of situations; this is
what I am presenting tonight
It is my hypotheses that if we want to make an impact we need to understand the sensor market and then build this into projects at the
start
Tonight I start with Temperature, Humidity and Barometric Preassure - these for the basis of many other things we want to measure, in
later weeks I will go onto more advanced topics
RW1820 (TEMPERATURE)
DS18B20 (Temperature)
DHT11 (Temp + Humidity)
DHT22 (Temp + Humidity)
BMP280 (barometric pressure)
BME280 (temp + humid + Baro)
My Criteria
Not very scientific
Pressure — as good as my iPhone?
Temp and humidity — as good as my home device
Low power and connectable via 3.3v (I want to run everything on batteries so 3.3v is more handy)
Simple as that!
My Setup
SPI
I2C
Analogue
Digital
Serial
Ways to connect to a sensor
More devices one cable
One Wire
SPI
I2C
Analogue
Digital
Serial
Ways to connect to a sensor
One Wire
PRACTICAL
BME280 (temp + humid + Baro)