Paragraph 37 and reference sensor module, widely circulated on the Internet, in fact, compatible with Arduino sensor module must be more than 37 species. Since I am on hand accumulated a number of sensors and modules, in accordance with the practice (try hands) the idea of true knowledge, learning and communication for the purpose, one by one here ready to do some experiments, regardless of success, will be recorded --- small progress or do not weigh the issue, hoping to initiate.
[Arduino] 168 kinds of sensor module series of experiments (data + Code + graphics + simulation)
Experiment forty-three: 5V low level triggered single relay module (singlemode normally closed normally open type)
Relay (English name relay)
Is an electrical control means, when a predetermined electrical requirement, a predetermined amount of step change occurring in the controlled circuit of the electric output quantity of manipulation when the input (energizing quantity) changes. It is the interaction between a control system (also known input circuit) and a control system (known as the output circuit) between. Typically used in automatic control circuit, it is actually a small current to a large current controlling one operation of the "automatic switch." It plays in the automatic adjustment circuit, a security role, conversion circuit.
The electromagnetic relay
generally comprises an iron core, coil, armature, composed of reed contacts. Just add a certain voltage across the coil, the coil flows through the constant current to produce an electromagnetic effect, the armature will overcome the return spring force to the absorption core at the suction action of the electromagnetic force, so as to drive the armature movable contact and the stationary contact (normally open contact) pull. When the coil power, the electromagnetic suction disappeared, the armature will return to the original position of the spring reaction force in the movable contact and the stationary contact original (normally closed contact) is released. Thus pull, release, so as to achieve conduction in the circuit, the purpose of cutting. For the "normally open, normally closed" contacts of the relay, this can be distinguished: a stationary contact in the OFF state when the relay coil is not energized, referred to as "normally open contact"; contact force in the ON state, said It is a "normally closed contact." Relays generally have two shares circuitry for high voltage and low voltage control circuit operating circuit.
5V low trigger single relay module (singlemode normally closed normally open type), see below floor low level trigger marked "LOW"
5V relay module, low level trigger
1, the module meet international safety standards, the control region and load region isolation groove;
2, FR-4 double-sided circuit board design, high-end chip production process;
3, a power supply and a relay instruction pull bright, light is not turned off;
4, the signal has a low level signal input terminal, the common terminal and the normally open will be turned on;
5, the relay can directly control a variety of devices and a load;
6, the control signal is a DC or an AC, 220V AC load can be controlled;
7, a normally open and a normally closed contact;
8, a blue line to the control terminal KF301 more convenient;
9, module size: 43 * 17 * 18.5MM; weight: 15g.
Electrical parameters
voltage quiescent current version of the current trigger current trigger voltage
5V 0-2V 2mA 4mA 65mA
9V 3mA 5mA 45mA 0-4V
12V 5.5mA 42mA 0-4V 3mA
24V 0-12V 3mA 12mA 40mA
relay contact capacity: 250V 10A (AC ) or 30V 30A (DC)
Interface module
the VCC: a positive electrode connected to 5V power supply (power supply voltage by relay)
the GND: ground 5V power supply negative
IN: signal relay module trigger terminal (active low trigger)
high and low meanings:
high level trigger means is made of a positive trigger voltage terminal VCC connected to the trigger terminal when the trigger voltage or the positive electrode terminal voltage reaches the trigger, pull the relay.
Low triggering means is made of a negative trigger voltage of the trigger terminal connected to the GND terminal, when the trigger with a 0V terminal voltage or a low voltage to be triggered, then the relay pull.
Description
power module 1.: power supply must be DC voltage to match the voltage relay
common terminal of the relay 2, normally open, normally closed, but SPDT switch
connection method of the normally open:
when the end signal is triggered when a low-level trigger, the common terminal and the normally open switches on electrical equipment operates
wiring method normally closed end:
when a low-level trigger signal trigger terminal, the common terminal and the normally closed terminal is disconnected, the device without power does not work
/*
[] Arduino series of experiments, 168 kinds of sensor module (43)
Experiment forty-three: 5V low level triggered single relay module (singlemode normally closed normally open type)
*/
int sign= 3;
int led= 13;
void setup()
{
pinMode(sign, OUTPUT);
pinMode(led, OUTPUT);
digitalWrite(led, HIGH);
}
void loop(){
digitalWrite(sign, HIGH);
delay(2000);
digitalWrite(sign, LOW);
delay(2000);
}
