USB power supply Input powered from USB 5V via a TypeC interface for convenient use with common USB chargers, laptops, or power banks. TTL power and signal TTL power output: 3.3V with a builtin power indicator to confirm operation. TTL signal level: 3.3V. The unit supports 3.3V power and 3.3V TTL signals only; 5V power or 5V TTL is not supported. Hardware only Communication protocol: pure hardware interface. No software or protocol layer is required or imposed. Key benefits Safe 3.3V operation: protects 3.3V microcontrollers and sensors from higher voltages. Flexible compatibility: suitable for devices and projects that use 3.3V TTL without being tied to a specific protocol. Easy power sourcing: simple USB TypeC power input from standard USB sources. Visual status: power indicator helps verify that the device is powered and ready. Quick integration: straightforward connection for 3.3V TTL devices in hardware projects. Use scenarios Scenario 1: Developing a 3.3V microcontroller project (for example, ESP32, STM32, or similar) where you need a stable 3.3V supply and a 3.3V TTL signaling path, powered from a USB TypeC source. Scenario 2: Prototyping sensors or modules that operate at 3.3V TTL. Use the 3.3V power output and TTL signaling to interface with your controller without a 5V risk. Scenario 3: Educational or lab setups to demonstrate hardware level TTL signaling at 3.3V with a simple USBpowered supply, without binding to a fixed communication protocol.