Choose a device to see exactly what you need to buy
Electromagnetic field detector with LED indicators. Perfect first project!
Step-by-step wiring guide with terminal blocks, capacitors, and component positioning.
๐ View EMF Wiring GuideMain microcontroller board. Get a 3-pack to save money for future builds.
Visual indicators for EMF strength progression. Need: 1 clear, 1 blue, 1 green, 1 yellow, 1 red. Get assortment kit with 500+ LEDs.
Current limiting resistors for LEDs. Get resistor kit with 1000+ pieces.
Detects magnetic fields for EMF measurement. Get 10-pack.
Screw terminal connections - fits in small enclosure. More compact than breadboard. Needs small screwdriver for assembly.
Pre-cut wires in multiple colors for terminal block connections. Get assorted lengths.
Power filtering capacitors. ESSENTIAL for stable operation - prevents noise, random resets, and jumpy readings. Get 500-piece kit for all projects.
128x64 I2C display for showing numerical EMF readings.
3.7V lithium battery with holder. Get 2-pack, only need 1 for EMF. Protected cells recommended. Plus single-cell holder with wires.
Lithium battery charger with protection. Mounts in lid with USB-C port accessible. Get 5-pack for future projects.
Short male-to-female extension for ESP32 firmware updates. Stays inside permanently - just pop lid to update. Get 5-10 pack for best value.
On/off power switch. Panel mount slide switch. Get 10-pack for all projects.
For mounting components inside enclosure. Mini glue gun works great. Essential tool!
3M VHB or similar mounting tape. For securing boards inside enclosure.
To program ESP32 from computer. Check your ESP32's USB port type. Data cable required (not charge-only).
โ ๏ธ CRITICAL: Hall sensor MUST face forward/up. See assembly guide below for 3 tested case options with drilling templates and finishing tips.
Best for: Testing, learning, and your first build. No soldering required!
โ Total build time: 30 minutes | No tools needed | Fully functional
Best for: Field use, durability, professional appearance
๐ฏ BEST VALUE - Recommended Case Option A: Pinfox 5-Pack (100x60x25mm)
Dimensions: 3.94" ร 2.36" ร 0.98" (100 ร 60 ร 25mm) | Price: $10-12 for 5 boxes | Material: Black ABS
Style: Perfect compact handheld size. You get 5 boxes - build multiple devices or have spares!
๐ฏ Recommended Case Option B: Fielect/Generic ABS Box (100x60x25mm)
Dimensions: 3.94" ร 2.36" ร 0.98" | Price: $6-8 (single or 2-pack) | Material: White or Black ABS
Style: Same size as Pinfox, various brands available. Search "100x60x25mm project box"
๐ฏ Premium Option C: Hammond 1591XXSSBK (Professional Grade)
Dimensions: 4.3" ร 3.2" ร 1.7" | Price: $7-10 (single) | Material: Black ABS, IP54 rated
Style: Larger professional-grade enclosure. More space for battery + display. Higher quality but more expensive.
โ Build time: 2-3 hours with enclosure
These techniques work for ANY project box modification - EMF meters, Spirit Boxes, EVP recorders, etc. Based on real-world methods from guitar pedal builders, electronics hobbyists, and DIY communities.
๐ก Read this section BEFORE modifying any enclosure - it will save you time and frustration!
Why it matters: The difference between amateur and professional drilling is hole placement accuracy. An automatic center punch ($5-8) creates a perfect starter dimple that prevents your drill bit from wandering. Press it against the marked spot, and it automatically creates a precise dimple with spring-loaded force.
Technique: Mark position with pencil โ Apply painter's tape โ Mark again on tape โ Use center punch โ Drill slowly
Why they're essential: Regular twist drill bits crack and melt plastic. Step drill bits (aka unibit) create perfectly clean holes without chatter or cracking. They're THE tool that separates professionals from amateurs.
Best practices:
The Pro Method (Used by Guitar Pedal Builders):
โ ๏ธ Critical: Multiple thin coats beats one thick coat EVERY time. Thick coats drip, sag, and look terrible.
Spray Paint Method (Most Popular for DIY):
Advanced option - Wet Sanding Between Coats: After 3 coats dry, wet sand with 800-1000 grit, then apply final 2-3 coats. Finish with 1500-2000 grit wet sanding for glass-smooth surface. This is how guitar pedal builders get mirror finishes.
Why vinyl is gaining popularity:
Method: Clean surface with alcohol โ Cut vinyl slightly oversized โ Apply with squeegee from center outward (removes bubbles) โ Heat with hair dryer to conform to curves โ Trim edges with hobby knife โ Seal edges
The ultra-durable finish: Powder coating gives a car-like finish that's extremely durable and scratch-resistant. Many cities have powder coating shops that will coat small parts for $15-30. Provide them with your drilled/deburred enclosure and specify color. Results are truly professional-grade - this is what commercial paranormal equipment manufacturers use.
Search "powder coating near me" to find local shops. Black, textured black, and OD green are popular paranormal equipment colors.
Essential ($25-35):
Finishing materials ($15-25 per project):
โ Community consensus: The automatic center punch + step drill bits combo is the #1 upgrade that makes DIY enclosures look professional. Everything else is secondary.
Commercial equivalent: K2 EMF Meter, Mel-Meter, Ghost Meter
Prices above are for breadboard version. Add $4-12 for professional enclosure.
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FM radio scanner with touchscreen interface for rapid frequency sweeping.
240x320 color touchscreen for interface controls and frequency display.
Programmable FM receiver for frequency scanning (76-108 MHz).
Small speaker for audio output. 28mm diameter fits most enclosures.
Rechargeable 3.7V lithium battery for portable operation.
USB battery charging circuit with overcharge protection.
โ ๏ธ CRITICAL: You must CUT a 2.5"ร2" rectangular window in the front panel for touchscreen access. Drill 3-5mm holes for speaker grill. ~4"ร3"ร1.5" ABS box.
Spirit Box requires an enclosure as the touchscreen forms the front panel. This is an intermediate build requiring soldering and precision enclosure modification.
๐ฏ Best Choice: Hammond 1591XXCSBK
Dimensions: 4.7" ร 3.2" ร 1.4" (120 ร 80 ร 36mm) | Price: $6-9 | Material: Black ABS
Perfect size for 2.8" touchscreen, battery, and FM module. Professional black finish.
โ ๏ธ The 2.5"ร2" rectangular cutout for the touchscreen is the hardest part - use the techniques in EMF section above!
โ Build time: 4-6 hours | Skill level: Intermediate
Commercial equivalent: P-SB7, P-SB11, SBox Ghost Scanner
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Environmental sensor-to-word device with phonetic synthesis and LCD display.
Main microcontroller with ample processing power for phonetic synthesis.
Color touchscreen for displaying words and environmental readings.
Temperature, humidity, and barometric pressure sensor for environmental input.
Audio playback module for phonetic speech synthesis output.
Storage for phonetic dictionary and audio files (500+ phonemes).
Rechargeable battery for portable operation (6-8 hour runtime).
โ ๏ธ CRITICAL: 2.8" display MUST be visible through window. Speaker needs front grill hole for clear word playback. Handheld ~5"ร3"ร1.5"
โ Build time: 8-12 hours | Skill level: Advanced (requires programming & audio setup)
Commercial equivalent: Ovilus V, Ovilus III, ITC Device
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Radiating electromagnetic field detector with proximity sensing and multi-color LED alerts.
Main microcontroller for field generation and proximity detection.
12-channel proximity sensor for detecting field disturbances.
Individually addressable RGB LEDs for visual proximity indication.
Active buzzer for audible proximity alerts with varying tones.
20-22 AWG bare copper wire for creating radiating EM field (12" length).
Rechargeable battery for 8-12 hour portable operation.
โ ๏ธ CRITICAL: Copper antenna must extend VERTICALLY from top for 360ยฐ EM field emission. LED ring visible around circumference. Round ~3" diameter
โ Build time: 3-5 hours | Skill level: Easy-Intermediate
Commercial equivalent: REM-ATDD, REM Pod, Mel-REM
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High-quality digital audio recorder with auto-detection, noise filtering, and timestamped recordings.
Step-by-step instructions with wiring diagrams, component positioning, and troubleshooting.
๐ View EMF Wiring GuideElectret microphone with auto-gain control for clear EVP capture.
128x64 display for showing recording status and audio levels.
โ ๏ธ CRITICAL: Microphone MUST have clear air access (5mm hole or mesh grill). OLED display visible through small window. Handheld ~4"ร2.5"ร1"
โ Build time: 4-6 hours | Skill level: Intermediate
Commercial equivalent: Sony ICD-PX470, Olympus VN-541PC, Zoom H1n
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Interactive bear with EMF, temperature, vibration sensors, motion detection, and phrase playback.
Small plush toy (8-12") to house electronics. Hollow or easy to open.
Motion sensor to detect if the bear is moved or touched.
EMF detection sensor for electromagnetic field changes.
Audio playback for pre-recorded phrases and responses.
Storage for audio phrases ("I'm cold", "Did you touch me?", etc).
Rechargeable battery for 12+ hour investigation runtime.
USB charging circuit - install in discrete location on bear.
โ Build time: 8-10 hours | Skill level: Advanced (multi-sensor integration + fabric work)
Commercial equivalent: BooBuddy Interactive Bear, Cerie Bear
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