- This is a case exclusively for the iPhone 15 Pro.
- Shipping will be processed in the order of orders received.
- An LED (1 unit) implemented without a battery will light up.
- It does not light up normally, but lights up when a strong radio wave is emitted.
- This is a set including an iPhone case and a Tokyo Circuit Diagram A5 clear file (green or black)!
The FLASH Kanagawa Oki Namiura Circuit Board Art iPhone Case features a single red LED implemented inside the "O" of HOKUSAI, which lights up without a battery.
The LED lights up by converting the radio waves emitted by the iPhone itself into power and boosting the voltage. It does not light up normally, but lights up when a strong radio wave is emitted. Since it lights up with the iPhone's radio waves, it lights up randomly.
It is more likely to light up when using information-rich apps like Google Maps, or when the iPhone is searching for location information in elevators or underground malls.
The mechanism for lighting up involves an antenna circuit on the back of the circuit board catching the weak radio waves emitted by the iPhone and routing them to the front. An amplification circuit on the front increases the voltage and current to make the LED light up.
The circuit that lights up an LED without a battery was patented in 2020 (Patent No. 6667777).
A circuit board cannot be made without designing it with PCB CAD.
Since PCB CAD is not design software, lines are drawn one by one with a mouse.
It is meticulously designed with fine lines and a 0.1mm wiring pattern.
Only three colors are used: gold (gold plating), black (circuit board ink), and white (circuit board ink).
The shades of clouds and waves are expressed through the wiring pattern (gold plating) and the line width of the ink.
While maintaining the surface design, the "circuit that lights up an LED without a battery" is wired on both the front and back surfaces of the circuit board.
After implementing the electronic components, to protect them, each unit is coated with resin in a cleanroom (Class 1000) by hand until it is filled by surface tension. Bubbles on the components and dust on the resin surface are then manually removed.
The product is designed and manufactured in Japan, and all products are RoHS compliant (lead-free). The circuit board is gold-plated.
It is packaged in a gift box and can be used as a gift.
The material for the iPhone 15 Pro case and iPhone 15 Pro Max case is TPU (thermoplastic polyurethane). TPU is a polymer compound that combines the supple elasticity of rubber with the toughness of hard plastic.
The case has a strap hole.
■ Product Specifications
FLASH Kanagawa Oki Namiura Circuit Board Art iPhone 15 Pro Case
Price: ¥16,200 (tax included)
Color: Black only
Size: 150mm x 75mm x 13.5mm (camera lens area)
Weight: 44g
Electronic Components Used: LED (1 unit), Resistor (1 unit), Diode (12 units), Capacitor (12 units)
Magsafe & Wireless Charging: Usable (OK)
| Product # | HOKUSAI-15PRO |
|---|---|
| Weight | 94 g |
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