Ghost Gear has created the first EMF circuit board module designed for ghost hunting. The module was designed for the DIY person who likes to make their own trigger objects. No more needing to use a K-II meter and repurposing the circuit board for your projects.
The EMF circuit board module has adjustable sensitivity, a digital output, an analog output, built in LED lights, a buzzer, and a selectable output level. A K-II can’t do that. All this for just $35 USD.
The circuit board comes pre-assembled. It operates on 6V to 9V battery power.
The EMF circuit board is a modular piece of hardware. Designed to detect EMF as low as 3 mG. Modular hardware is where a circuit is split into modules instead of one component. In electronics, its splitting a circuit into several PCB’s or printed circuit boards. A computer motherboard with slots for cards and other peripherals is an example of modular hardware.
Chances are if you are building your own trigger devices you will need to add modular PCB’s. If you are using Arduino or Raspberry Pi, you definitely will need to add a modular board.
If you are using the EMF module to drive an Arduino or Raspberry Pi, you will want to make sure the digital output of the module is 5V. If you are powering it with a 9V battery you will need to drop the output to 5V using a resistor or voltage limiting circuit.
You can use the analog output to drive a speaker and listen to the EMF. The analog output signal is a replication of the detected signal. This means if a 60Hz EMF is detected the output will be 60Hz.
The circuit is built using resistors, capacitors, transistors light emitting diodes and a buzzer. This is not a complete list by any means but gives you an idea of the complexity of the circuit.