Wonder if you're giving your dog the exercise she needs? Like electronics? Make your own GPS dog collar!

Parts

• Adafruit Ultimate GPS Breakout - 66 channel w/10 Hz updates - MTK3339 chipset
• Atmega32u4 Breakout Board
• Monochrome 128x32 OLED graphic display
• 3 x AAA Battery Holder and batteries
• stranded hookup wire
• wire-edged ribbon
• scrap of fabric
• electrical tape or dark nail polish (optional)

Tools:

• Soldering iron
• wire strippers
• pliers
• scissors
• needle and thread
• iron
• sewing pins
• sewing machine (optional)

The progress bar fills up as you stroll around the neighborhood. Set your goal ahead of time and watch the miles rack up.