This little assembly uses a Spark.io Core and two digital sensor to measure weather data. The first sensor is the MPL115A2 from Adafruit. A barometric temperature and pressure sensor which communicates via the I2C protocol. The other sensor is the DHT22 from Adarfuit, a digital temperature and humidity sensor.
The Spark Core itself is a tiny Arduino compatible computer that has built-in WiFi and Cloud connectivity. You can easily read and write it's pins from remote via the Spark Cloud.
I use a standard breadboard to connect all the components
- MPL115A2 from Adafruit
- DHT22 from Adarfuit
- Spark.io Core from Tinkersoup Berlin
- Standard Breadboard
- a few jumper cables
Contains the images the are used to generate this website. Things like the Fritzing Schemas etc.
A compiled version of the Spark Code code from the spark-code folder. This includes the external libraries.
You can either download this from the Spark.io Workbench in the web or compile it with the Spark.io Command Line tools.
The source code of Spark Core file. This contains some external libraries for the two sensors. They are from Adafruits Github account:
Some miscellaneous files like shell scripts to generate graphs.
contains the web files for the RRD graphs of the temperature readings
The easiest way to get the code to your core is to use the command line interface from Spark.io. Once you've installed that and logged in to the Spark Cloud you can compile the code in the cloud:
cd temp_logger
temp_logger fzurell$ spark compile spark-code
Including:
/Volumes/Repositories/temp_logger/spark-code/Adafruit_MPL115A2.h
/Volumes/Repositories/temp_logger/spark-code/dht.h
/Volumes/Repositories/temp_logger/spark-code/weather.ino
/Volumes/Repositories/temp_logger/spark-code/Adafruit_MPL115A2.cpp
/Volumes/Repositories/temp_logger/spark-code/dht.cpp
attempting to compile firmware
pushing file: /Volumes/Repositories/temp_logger/spark-code/Adafruit_MPL115A2.h
pushing file: /Volumes/Repositories/temp_logger/spark-code/dht.h
pushing file: /Volumes/Repositories/temp_logger/spark-code/weather.ino
pushing file: /Volumes/Repositories/temp_logger/spark-code/Adafruit_MPL115A2.cpp
pushing file: /Volumes/Repositories/temp_logger/spark-code/dht.cpp
Memory use:
text data bss dec hex filename
87640 1280 11960 100880 18a10 /spark/compile_server/shared/workspace/3_compile-server2/core-firmware/build/40806d0d186250dc010a43805ccb759d08183f5b9600fef1ade78cc63d88.elf
grabbing binary from: https://api.spark.io/v1/binaries/54dc665fe581a5a66a144ebc
saved firmware to /Volumes/Repositories/temp_logger/firmware_1423730270705.bin
Compiled firmware downloaded.
temp_logger fzurell$ spark flash <your_corename> firmware_1423730270705.bin