Technical Details

• Dimensions: 86 mm (3.46") x 95 mm (3.74")
• Options for 9v or AA batteries
• 5 LEDS driven by an LM3914 (Jumper Option for DOT/BAR Mode)
• ATtiny85 controller
• DFPlayer module for audio
• Supports 3326 or 3386 F and P series blue potentiometers
• Supports PT10 or PT15 black potentiometer
• Optional 5th yellow capacitor
• Uses a functional EECO switch to select gain for the E-Field detector and can support a number of different EECO switches. Specifically, EECO 2700 series -02, -19, -31, -33, -41, -44 will work as is and others can be adapted to work. The PCB footprint supports 6 and 12 pin switches.
• Flexible wiring options.

Description

This is a printed circuit board for making a functional replica of the classic EMF meter seen in many of the Supernatural episodes. To assemble this circuit board you must be comfortable working with and soldering electronic parts. A full assembly and usage guide is available by following the documentation link as well as a 2 part video series.

An ATTiny85 is used to control the DFPlayer sound board and the analog meter deflection. Programming for the ATTiny85 can be done before mounting and can also be accomplished using an In-Circuit Serial Programming (ICSP) port to program the mounted part on the board. There is a jumper option (JP1) to select either the main board power or to use the ICSP port for programming power. I also have available a soft touch programming cable for programming this part.

Check out the documentation link for more details.

Images of assembled units are for reference only. This item is a blank PCB.

Purchase Options

Blank PCB is the default

• With programmed ATTiny85 part
• With DFPlayer module
• With meter base (3D printed, black)
• With P-clips for antenna mounting (3D printed, clear, 2 each)
• With 9v Battery Holders (3D printed, black, 2 each)
• With AA battery pack holder (3D printed, black)

For assembled units check out the "EMF Meter Replica - Assembled" listing.