Wireless Power Transfer Coil Kit for DIY Projects and Prototyping
= Transmitter and Receiver Coil Set for Inductive Charging and Wireless Energy Transmission =
A Wireless Power Transfer (WPT) coil kit contains the essential transmitter and receiver coils needed to build a wireless power system. This is the fundamental hardware for projects like contactless battery charging for wearables, smartphones, smartwatches, or for powering low-current devices without physical connectors . The principle is based on inductive coupling, where an alternating current in the transmitter coil creates a magnetic field that induces a voltage in a nearby receiver coil .
EasytoUse Module Simple setup with a transmitter (912V input) and receiver (5V output) for quick prototyping.
Wide Application Range - Suitable for wireless charging of mobile phones, smartwatches, and other small electronics .
The transmitter coil typically requires a 912V DC power supply, and the receiver board provides a regulated 5V output capable of 350450mA .
Use with an Arduino Uno or similar MCU to control the frequency and create flashing or sequenced effects .
= Key Features =
Transmitter and Receiver included - Complete set ready for integration into DIY projects.
Compact form factor - Small PCB and coils suitable for tight spaces .
Adjustable distance Output current varies inversely with coil distance; works within 36mm .
== Common Applications ==
- Smartphone and Wearable Charging - Add wireless charging capabilities to custom enclosures or devices .
- DIY Lighting Displays Transmit power to multiple, selfcontained wireless LEDs that can be controlled individually .
- Sealed and Waterproof Devices - Eliminate the need for exposed charging contacts in outdoor or industrial products .
PlugandPlay - Straightforward connection and testing for a quick project start.
Safe and Convenient - No exposed conductors, reducing the risk of short circuits and corrosion.
√ Compatible with popular microcontroller boards like Arduino, STM32, and ESP8266.
√ Widely used in DIY, educational, and rapid prototyping settings.
√ Easy integration with battery charging modules for portable projects.
= Troubleshooting =
Low output current or no power:
- The distance between coils is too great; for 5V output, position coils 3-6mm apart for best efficiency .
- Verify the input voltage to the transmitter is within the correct 9-12V DC range .
System not working:
- Use a multimeter to check that the transmitter is drawing power and that the receiver output is within the expected range.
- Ensure proper polarity and secure connections on both boards.