eManual Item 8 Basic Operation, 8.4.3 Ultrasonic Sensor HC-SR04, what are the recommended power connections? HC-SR04 specification is +5 v supply so is the Vcc +5 v/Ground Arduino Shield socket pin a suitable place? Also is a 500 mf capacitor across the Sr-HC04 +5/G recomended? Or what is recommended?
For Item 8.4.5 LED, what are LED polarity (i.e cathode/anode), Series Resistor value and power connections? The eManual details the use of BDPIN_GPIO_4, _6, 8, 10. Are these pins connected to the individual 4 LEDs anode or cathode leads, through a series resistor and other 4 LED leads connected together in common and connected to either +3.3 or ground? What is the value of the series resistor?