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March 2015 - Circuit Crush

Month: March 2015

The Arduino APRS Journey

We are investigating adding APRS abilities to our DIY Weather Stations. Automatic Packet Reporting System (APRS) is an amateur radio-based system for real time tactical digital communications of information of immediate value in the local area. In addition, all such data are ingested into the APRS Internet System (APRS-IS) and distributed globally for ubiquitous and …

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SD Card Datalogging with the DHT22 Temp Humidity Sensor

We were asked to do a tutorial explaining how to do logging with the DHT22 Temperature Humidity Sensor. This is a little tricky, as the sensor outputs floats, and we send strings to the SD card, I’ve put together a float to string feature to help with this. Please see our previous tutorials on how …

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