Track Your Dog With This DIY GPS Harness

GPS-dog-harness

Have you ever wondered how far your dog actually runs when you take it to the park? You could be a standard consumer and purchase a GPS tracking collar for $100 or more, or you could follow [Becky Stern's] lead and build your own simple but effective GPS tracking harness.

[Becky] used two FLORA modules for this project; The FLORA main board, and the FLORA GPS module. The FLORA main board is essentially a small, sewable Arduino board. The GPS module obviously provides the tracking capabilities, but also has built-in data logging functionality. This means that [Becky] didn’t need to add complexity with any special logging circuit. The GPS coordinates are logged in a raw format, but they can easily be pasted into Google Maps for viewing as demonstrated by [Becky] in the video after the break. The system uses the built-in LED on the FLORA main board to notify the user when the GPS has received a lock and that the program is running.

The whole system runs off of three AAA batteries which, according to [Becky], can provide several hours of tracking. She also installed a small coin cell battery for the GPS module. This provides reserve power for the GPS module so it can remember its previous location. This is not necessary, but it provides a benefit in that the GPS module can remember it’s most recent location and therefore discover its location much faster. [Read more...]

VCF East: PetPix, Streaming Images To A Commodore PET

PETaday

Thought the Vintage Computer Festival would just be really old computers with hundreds of people pecking 10 PRINT “HELLO” 20 GOTO 10? Yeah, there’s plenty of that, but also some very cool applications of new hardware. [Michael Hill] created PetPix, a video player for the Commodore PET and of course the C64.

PetPix takes any video file – or streaming video off a camera – and converts 8×8 pixel sections of each frame to PETSCII. All the processing is done on a Raspberry Pi and then sent over to the PET for surprisingly fluid video.

There is, of course, a video of PetPix available below. There are also a few more videos from [Michael] going over how PetPix works.

[Read more...]

Feedback for automated water and food pet dispensers

pet-food-and-water-automation

[Enrico] figured out a way to fully automate his pet food and water. The system is in two parts, the water trough as seen on the left, and the food dispenser whose control hardware is shown on the right. The system is even hooked up to the network so that he can make sure it didn’t break down while he was away.

The water dispenser uses parts from a sprinkler system. Since it’s mounted outdoors it doesn’t matter if the water overflows a little bit. So [Enrico] set up the timer to run the water for three minutes every day. This acts as a backup system since the trough already has the ability to refill itself.

The food dispenser started as a commercial unit. To get feedback from the system he added a couple of magnets to the agitation motor and reads them with a hall effect sensor. In addition to an IP camera that monitors the area around the feeder (so [Enrico] can actually see his dog eating) there is a webcam which monitors the STM32 Discovery board which monitors the feeder. It tracks the number of times the dispenser has run.

Hacking dog collars to save money on batteries.

[Lou] sent in this amazingly simple hack that has been saving him money on special batteries for his dog collar. He uses an invisible fence system which gives the dog a shock if it passes beyond certain markers in his yard. The collars use special batteries so you’re not strapping multiple full sized cells to your dogs neck. This is especially necessary when you have a smaller dog that doesn’t weigh much to begin with.

What [Lou] found was that the $8 replacement batteries were simply a plastic shell on a battery he could buy for considerably less. All that was required were a few small cuts to the plastic casing to release the old battery, then he presses the new one into place. This tiny modification will be saving him a considerable amount since the unit burns through a battery in a few weeks.

[Read more...]

Recreating the Commodore PET with an FPGA

commodore_pet_fpga_clone

[Thomas’] love affair with Commodore computers spans well over 30 years, and not too long ago he decided to recreate one of his favorite Commodore offerings, the PET. As we have seen with similar undertakings, this sort of project is no easy task, but [Thomas] seems to be making his way along nicely.

Using a Xilinx Spartan-6 FPGA on the Digilent Nexys3 dev board, he has implemented the Pet in Verilog. Like the original, his clone contains 16K of both ROM and RAM, utilizing the same simulated 6502 microprocessor he used on a previous Apple ][+ project. The FPGA version of the computer sports a 640×400 resolution which is twice that of the original, so [Thomas] simply doubled the size of each of the PET’s pixels to fill in the extra space.

[Thomas] has made some great progress so far, including the ability to load games and other programs from cassette images over a serial connection. He says that there are still a few loose ends to tie up, but it all looks good from here!

Continue reading to see a short video of Space Invaders running on he PET recreation.

[Read more...]

Internet enabled cat feeder

When travelling, it can always be a pain to have your cats cared for. There are some commercial automated solutions out there, but they tend to be pricey, especially when there are two required. These two cats don’t need to worry though. They have an internet enabled monster of a system.

The system used is pretty unique. They wanted internet connected relays, but didn’t want to put an entire computer in line just for the cat feeder. Instead, a Cisco router was hacked to run relays hooked to the status lights on the ports. Not only can it be controlled over the internet, there is also a live feed so you can see the cats as the binge. These are some pretty lucky cats. They also have an automatic cat door.

[via Hackedgadgets]

CATaLOG: RFID cat tracking

rfidcats

Like many pet owners, [Pete] was curious about his little furry friend’s habits while he was gone. He decided to build an RFID tracking system to monitor their positions. This data would then be available on the web.  An Arduino handles the communication of the data, both to twitter and his personal cat tracking site. We were a bit surprised to see that the only data transmitted on the final project was whether the cat was inside or out. We’d like to see a heat map of the cat’s activity in the house.

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