What type of interface is generally used for dash cams?
1 Answers
Dash cams generally use a USB interface. Since dash cams consume very little current, any 5V power port can be used, and the standard voltage for USB is 5V. Additional information: 1. May not meet operational needs: While dash cams can be powered via USB, there are certain limitations. Some car models' USB ports may experience current fluctuations when the vehicle starts, which could potentially damage the dash cam. Additionally, USB power extraction is not suitable for long-term, non-removable use. Moreover, some vehicles cannot supply power via USB after the engine is turned off, making it impossible to meet the dash cam's 24-hour operational requirements. 2. Aesthetic concerns: Typically, dash cams are plugged into the power socket of the cigarette lighter. If the exposed wiring is considered unsightly, the plug can be disassembled to access the internal circuit board. A 12V power supply can then be input from a location near the dash cam, such as the ceiling, and stepped down to power the dash cam. 3. Voltage reduction measures: Since dash cams generally require an input voltage of 5V and car batteries provide at least 12V, a separate step-down module meeting the requirements can be purchased online to power the dash cam.