Posts Tagged ‘commissions’

Supernatural Thermal Scanner Prop (Laser EMF Reader)

Tuesday, October 9th, 2018

Supernatural Laser EMF

This is my Laser EMF reader, aka Thermal Scanner prop. The Lasers, LCD, and Camera are all functional. In addition, I added gearing to the back so the Lasers could perform a synchronized linear scan.

From the supernatural TV show, there are a variety of EMF Readers used. Especially early on. This paper outlines many of the different variations.

The handheld device seen in episode S01E14 is not an EMF Reader, it is a Thermal Scanner.  I have made a few of these now and have enough pictures to make this write up.

Part List:


3D Printing:
The 3D printed parts are optional. I designed them to both hold the lasers and allow them to move in sync. If you opt not to use the 3D printed parts, you can substitute christmas light holders instead.

Supernatural Laser EMF Supernatural Laser EMF - 5

Some of the terminal blocks are blue and need to be painted silver. Poke the terminals into some cardboard to hold upright. Spray paint before soldering into the circuit board.

With the Screw Terminals installed, you have a sense of how the board is laid out. You can see that the breadboard is too long. Use a saw or dremel to trim the board shorter. If the edge is jagged, cover with electrical tape.

Supernatural Laser EMF

This is mostly a wiring project. Most of the wires you see running around the prop are real. There are two voltages on the board, 9V and 3V. Both run to the Slide Switch, which is DPDT with two isolated switching paths.

Wiring 9V Path: The 9V comes from a pair of 9V batteries wired in parallel to increase run time of the LCD. After the Slide Switch, the 9V is wired to power the LCD, Camera, and LEDs.

Wiring 3V Path: The 3V comes from the 2xAA and powers the lasers. After the Slide Switch, the 3V is wired to a momentary button, and finally the lasers. Polarity is not marked on the lasers, so be careful when soldering on some power wires. After powering on for the first time, the lasers need to be tuned. Take a screwdriver and spin the potentiometer on the lasers. 5 turns counter-clockwise to reset, then slowly bring the laser back on. The green lasers I linked are only 10mW, but they sell more powerful laser diodes that can be dangerous. Be careful when working with the lasers. You want them set to the lowest brightness that they can be seen across a room.

Supernatural Laser EMF

Camera Wiring: Before doing anything, test the LCD and Camera by using the cables supplied in the combo kit. Power up with a 9V battery. After confirming you did not receive a DOA device, you can proceed with cutting the cables.

The cables that come with the LCD and Camera are meant for automotive installs. I cut these wires much shorter and splice back together. Do note that the camera likely has a black lump on the cable. This blob likely contains a 12V -> 5V converter. When splicing the cables shorter, keep this block intact and splice around, do not remove.

Supernatural Laser EMF - 6

– Backup car lines on LCD are caused by the camera drawing them. Using a non-backup camera should fix.
– Lasers are difficult to tune so they are the same brightness.


Ammo Counters – Researching Competition to Push a New Generation

Tuesday, March 21st, 2017

I have been selling ammo counters since 2009. After I made my energy sword, ammo counters were the most requested kit. Over the years, I have probably sold 200-300 kits. Back then, I easily beat out the lame old competition. However, sales dried up last year. I was busy with my EMF and NES projects so I didn’t look into it.

Today, I searched around for new competition. Oh man. Things have changed. I think I still got them beat on size and price, but I need to work on my offerings to stay competitive.

Old competition

New competition

  • Nathaniel Deal: Nerf Ammo Counters
    • Good price for what you get.
    • Offers both bare bones and complete kits. Some kits include 3d printed shells.
    • Mostly focused on nerf builds. Requires additional circuit boards that must be hidden inside your build.

    Nathaniel Deal: Nerf Ammo Counters


Taking Commissions

Tuesday, November 3rd, 2015

I am closing the store portion of the website. This last year I trialled a commission system and did some small runs. I like doing these runs and one-off commissions a lot more than having a set inventory of kits. If you are interested in me making you a kit below or something custom, shoot me a message or email and I will let you know my thoughts and availability.

I will still be selling the following kits.
Halo Cortana Dogtags
Ammo Counters (for Nerf/Airsoft/Paintball and Prop weapons)
Illuminated Power Pushbutton

I will give out information on how to make the following:
Izzy’s ZZLT LTAR Display
Helmet Light and Fan kits