Firmware for Vox Digital GPS tracker, watchdog firmware goes on pic12f675

為了學習 ARM LINUX 嵌入式作業系統的開發，筆者買了一塊 MINI2440 開發板

This mini-VOX - voice operated relay - is based on a circuit published in Silicon Chip, 9/1994, p31. We have improved it by putting an on-board Koa potentiometer in order to adjust the sensitivity. The idea behind a VOX is that instead of the u