USB Type-C DC 5V CW Morse Telegraph Touch Sensitive Automatic Key Module Amateur Radio Morse

Parameter:
Power Supply Voltage: Type-C interface DC-5V
Output Interface: 3.5mm interface
Operating Environment: -40°C to 85°C

Principle Description:
The touch key is divided into upper and lower layers, the upper layer is the main circuit and interface part of the key, and the lower layer is the magnet fixing base. The whole machine uses a touch chip to sense the capacitance change from the metal ball. After the human body touches the metal ball, the change in capacitance is transmitted to the relevant pins of the chip through the line, and the relevant keying signal is amplified and driven by the triode, and finally transmitted to the At the key interface, the logics of the whole machine is that the effective keying signal is low level, and the non-touch signal is 5V high level. This level form matches the oper