Category Archives: arduino

Arduino – logging accelerometer

This logging accelerometer is set up using Arduino UNO compatible microcontroller SD card adapter Three axis digital accelerometer Various cables, breadboard and an sd-card (any size will do) The library for using the SD-card comes with the arduino IDE v … Continue reading

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Sensor testing

Comparing measurements of temperature and humidity using DHT11, DHT22, BMP085 and DS18B20. Continue reading

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Arduino and BMP085

The BMP085 is a barometric and temperature sensor. I’ve got one on a breakout board from geeetech. Using this and an arduino, it is possible to build an electronic barometer. It can be connected to an arduino uno or nano: … Continue reading

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Reading temperature data out of postgres

I have set up a system logging temperatures (and later hopefully also other parameters) to a postgres database. The data are now read out and presented as an svg-graph. (this may not work in some older browsers, i.e. msie< 9 … Continue reading

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Storing temperature data in postgresql

Pushing temperaturedata from an arduino setup into a postgresql database Continue reading

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Arduino and infrared reflective sensor

Testing a infrared reflective sensor module. I set it up with an arduino board, running the following sketch: int sensorPin = 10; int value = 0; int prevval =0; int count=0; void setup() { pinMode(sensorPin,INPUT); Serial.begin(9600); } void loop() { … Continue reading

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Store data from temperature server in couchdb

Fetching json data from an arduino server, adding a time stamp and stashing it all into a couchdb. Continue reading

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