loto oscilloscope practice - ultrasonic ranging moduleThe ultrasonic ranging module we use here is generally used for automatic obstacle avoidance of Arduino smart cars. Common applications are develo...
Gold fingers are a row of equally spaced square pads on a PCB circuit board, with exposed copper and gold plating; they are commonly used for electrical connection pins of boards, LCD connections, mot...
1993 1. The first newspaper for eating, drinking and having fun, "Fine Shopping Guide" was launched on January 8. 2. The first fashion magazine, "Vogue" magazine was launched in August. 3. Going abroa...