October 21, 2007

PIC 12F683 Microcontroller Based Logic Probe
Cool Gadgets

2

Have a look at this cool PIC 12F683 Microcontroller Based Logic Probe. “The purpose of this device is to test a wire to determine the logic state. Two LEDs show the logic state as either high, low, or high impedance (aka floating). Simply attach the ground probe to any ground connection of the circuit you want to test, then touch the test probe to the signal you want to test.

GPS RS232 Breakout Circuit
DIY Hacks

9

Looks like the Holux GM-210 GPS unit is a good choice to interface to a microcontroller, the downside is that it doesn’t use a standard RS-232 port. A converter is available to change the existing port to what we need but since it is costly any serious hacker would build their own converter. “The cheapest GPS reciever I could find was the Holux GM-210 unit. It’s a great unit since