Minelab Pro Find 40 Pinpointer metal detector METAL DETECTORS FOR SALE INCLUDING SPECIALTY DETECTORS FOR TREASURE HUNTING, CACHE LOCATING, GOLD NUGGET SHOOTING, AND UNDERWATER DIVING DETECTORS. WE CARRY AND SUPPORT ALL MAJOR METAL DETECTING MANUFACTURER BRANDS INCLUDING: WHITE'S, FISHER ELECTRONICS, ...
This metal detector works by sending pulses to a RL low-pass filter, where the ‘L’ is the inductance of the search coil, and 'R' the external 100 Ohm resistor. The Arduino measures the delay between input pulse (pin 10) and the output pulse (pin 8). This delay is proportional to ...