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Small green circuit board with mini USB port and short cable, 8 by 5.3 cm

Ruth's sister

Ruth's sister Pulse Generator Board USB Rechargeable 7.83Hz

SKU CH-8J48-QJ9R6

A compact 7.83 Hz Schumann wave generator board measuring 8 × 5.3 × 0.6 cm, USB-rechargeable at 5 V 0.1 A for DIY audio and sleep improvement

  • Improve sleep quality with 7.83Hz Schumann wave
  • Enhance sound perception via ultra-low frequency pulse
  • Compact 8cm x 5.3cm board fits DIY projects
  • USB rechargeable at 5V 0.1A for portable use
  • Includes 30cm Mini USB cable for easy power

Pulse Generator Board 7.83 Hz

This USB-rechargeable pulse generator board produces a 7.83 Hz Schumann wave signal from a compact PCB module. It is intended for hobbyists and DIY experimenters who want a portable ultra-low-frequency source for personal wellness or audio experimentation. The board measures 8 cm by 5.3 cm by 0.6 cm and includes a 30 cm Mini USB cable for power.

Upgrade From Battery Modules

The rechargeable design replaces disposable-battery pulse generators that require frequent cell changes. The jump is worth it when you need a stable 5 V 0.1 A supply from any USB port and want to avoid the cost and waste of single-use batteries during extended sessions. Mini USB connectivity lets you power the board from power banks, chargers or a computer.

Capacity And Headroom

The fixed 7.83 Hz output suits sleep-quality and sound-perception experiments where a single ultra-low frequency is sufficient. Headroom ends at that single frequency; the board cannot generate adjustable or multiple waveforms, higher frequencies or programmable patterns. Users who need variable frequency, waveform shaping or higher output voltage will need a more advanced function generator.

Highlights

  • Improve sleep quality with 7.83Hz Schumann wave
  • Enhance sound perception via ultra-low frequency pulse
  • Compact 8cm x 5.3cm board fits DIY projects
  • USB rechargeable at 5V 0.1A for portable use
  • Includes 30cm Mini USB cable for easy power

Specifications

No published specifications for this item yet.

Questions about this item

What are the exact board dimensions for enclosure planning?

The board measures 8cm x 5.3cm x 0.6cm, which is approximately 3.15" x 2.09" x 0.24", so allow that footprint plus cable clearance.

How do I power it and which step is often missed?

Connect the supplied 30cm Mini USB cable to any 5V 0.1A USB source; the step people miss is ensuring the source actually delivers 0.1A, as some ports current-limit lower.

What part will need replacement first with daily use?

The Mini USB cable and connector see repeated flexing; the board itself has no moving parts, so the cable is the only wear item to keep a spare for.

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