Stacking GPS, GSM, and an SD card into an Arduino shield

shield

A few years ago, [Phang Moh] and his compatriots were asked by a client if they could make a vehicle tracking device for oil tankers all around Indonesia. The request of putting thousands of trackers on tanks of explosives was a little beyond [Phang Moh]'s capability, but he did start tinkering around with GPS and GSM on an Arduino. Now that tinkering has finally come to fruition with … [Read more...]

Data logging directly to Google Docs (Google Drive)

data-logging-on-google-docs

[Emanuele] is using Google Docs to log his temperature sensor data automatically (translated). We can see a few benefits gained by using this system. One is that you don't have to visit the site of the logging hardware to harvest the data, another is that Google will automatically graph the data for you. Of course this means you need some way to connect your logger to the Internet, but we've seen … [Read more...]

Unlocking RS232 serial comm on a multimeter

adding-rs232-multimeter-output

[Craig] cracked open a multimeter to unlock RS232 serial communications that can be used for data logging. There's a couple of things that make this possible. First of all, the multimeter's processor is not covered in a black epoxy blob, leaving the pins exposed for hacking. Second, the chip model is known and [Craig] was able to get his hands on the datasheet. One of the pins enables serial … [Read more...]

Tweetidor, the tweeting humidor

tweetidor12-300x225

As cigar aficionados will tell you, cigars should be stored in climate controlled humidors to keep them in best condition for smoking. Most of the time a humidor is just a simple air-tight box with a hygrometer attached, which measures the relative humidity inside the box. Feeling as though he needed more control over the environment he kept his cigars in, [Justin] created the Tweetidor, a humidor … [Read more...]

Tripmate gps data logger

This one is fitting - I was just checking out Suunto's sweet gps data logging watches today. [Steve Cholewiak] sent in his diy GPS data logger. It uses an old DeLorme tripmate - these were serial gps units that ran off of internal batteries. A PIC controller reads the NMEA sentences from the tripmate. Then it stores the track data to an EEPROM. The same serial connection is used to retrieve the … [Read more...]