7/31/2023 0 Comments Arduino relay shield tutorial![]() Today’s tutorial will show you how to use an Arduino Relay Shield. If there is no current, the armature will be near contact 3. An anchor (2) will be attracted to it if an electric current is applied to it. Some of them are four dynamic LED indicators displaying the relays’ states, four high-quality relays, NC/NO interfaces, etc. The relay consists of two unrelated circuits control circuits A1 and A2 and controlled circuit 1, 2 and 3. NOx) is a normally open pin, NCx pin is normally closed, COMx is common, i.e., when the relay is not driven, NOx and COMx open between two pins, NCx and COMx connection When the relay (x) control signal pin is high drive relays, NOx and COMx connection open between NCx and COMx. A relay shield also has exceptional features. Relay Terminals: Terminal high-power, high-current high voltage can be connected to the device. Indicator: four lights are red when the relay is driven high, the corresponding indicator will light up. Relay: sky- 5V DC relay, model HJR-4102-L-5V, which Relay1 behalf of the 1st relay, the other and so on. Relay Shield Interface: (the last picture show) Special Note: When using the For UNO board connected to it, because UNO USB interface is extremely high, should avoid green terminals are shorted its shell. High Drive (5V or 3.3V) normally open contact closure Step 1: Connect the Grove Blueseeed Dual model (HM13) to a Grove port on the Grove Base Shield via the Grove cable Step 2: Plug Grove Base Shield into your Arduino board Step 3: Connect your Arduino to PC via USB cable 3. 3 M3 screw positioning holes for easy installationĤ. The Arduino 4 Relays Shield is a solution for driving high power loads that cannot be controlled by Arduinos digital IOs, due to the current and voltage limits of the controller. Can continue to stack other For expansion boardsģ. Standard For Shield interfaces and shapeĢ.
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