ESP8266 relay

1. Can ESP8266 control relay?
2. What is ESP8266 relay?
3. How to use 5V relay with ESP8266?
4. What voltage is ESP8266 relay?
5. How to use relay with ESP8266?
6. Can ESP8266 supply 5V?
7. How far can ESP8266 transmit?
8. How many relay can I control with ESP8266?
9. How long can ESP8266 run continuously?
10. Can I supply 12V to 5V relay?
11. Is ESP8266 5V tolerant?
12. Will 5V trigger a 12V relay?
13. Can I use 12V relay in Arduino?
14. Can ESP8266 control motor?
15. Can I give 12V to ESP32?
16. Can ESP32 drive a relay?
17. Is ESP8266 better than ESP32?
18. Can ESP32 control relay?
19. Can Arduino control relays?
20. Can ESP8266 control motor?
21. Can ESP32 handle 12V?
22. How many relay can I control with ESP8266?
23. Which is better ESP32 vs ESP8266?
24. Can NodeMCU handle 12V?
25. Is ESP8266 5V tolerant?
26. Can we give 12V to NodeMCU?
27. Do relays need AC or DC?
28. Can a 5V relay handle 12V?
29. Can we give 12V to 5V relay?

Can ESP8266 control relay?

The code to control a relay with the ESP8266 is as simple as controlling an LED or any other output. In this example, as we're using a normally open configuration, we need to send a LOW signal to let the current flow, and a HIGH signal to stop the current flow.

What is ESP8266 relay?

NodeMCU board contains an ESP8266 Wi-Fi enabled chip. A relay: An electromagnetic switch operated by a relatively small electric current that can turn on or off a much larger electric current. There are relay modules whose electromagnet can be powered by 5V and with 3.3V. Both can be used with the ESP8266.

How to use 5V relay with ESP8266?

Connect your 5 V relay supply to Gnd and "JD-VCC" on the three terminal connector. Connect your ESP8266 I/O line(s) to the relevant "IN"(s) on the relay board. Connect your ESP8266 5 V supply and not the 3.3 V to "Vcc" on the ten pin connector. Do not connect Gnd to ground on your ESP8266 board.

What voltage is ESP8266 relay?

Introducing Relays

It can be controlled with low voltages, like the 3.3V provided by the ESP8266 GPIOs and allows us to control high voltages like 12V, 24V or mains voltage (230V in Europe and 120V in the US).

How to use relay with ESP8266?

Relay Connections:

Connect NodeMCU Ground (GND) pin to -ve pin of Relay. Connect NodeMCU Supply (3v3) pin to +ve pin of Relay. Connect NodeMCU Digital pin (D4) to Input pin of Relay.

Can ESP8266 supply 5V?

There's a few things you have to look out for when using an ESP8266: The most important thing is that it runs at 3.3V, so if you connect it to a 5V power supply, you'll kill it.

How far can ESP8266 transmit?

The device is equipped with a GPS module, a Lora-R02 receiver and transmitter module, and a Nodemcu ESP8266 module as a replacement for the 900A SIM module which transmits data faster. When the device is being tested, all the sensors of the tool work well at range of 125 meters (previously less than 100 meters).

How many relay can I control with ESP8266?

You need to start using ESP32 if you need to control 16 relays. With ESP8266 you can control may be 10(max) because there are few pins which cannot be used as output.

How long can ESP8266 run continuously?

Typical current consumption of an ESP8266 module in normal operation mode is 70mA. So, if we run an ESP module continuously in normal mode it will run only for one and a half day.

Can I supply 12V to 5V relay?

12V will definitely damage the relay board.

This 2 channel relay board requires about 200mA at 5V with both relays energized. I suppose the simplest solution would be to use a 5W, 6.8V zener diode connected in series with 12V to drop it to 5.2V.

Is ESP8266 5V tolerant?

Some people state that ESP8266 is tolerant of 5 V logic levels on its GPIOs, while others vehemently disagree, pointing at the datasheet-stated 3.6 V maximum. Datasheets aren't source code for compiling the chip, however, and aren't universally correct and complete either.

Will 5V trigger a 12V relay?

Relays with a 5V coil can be driven by a 5V signal. There are loads of relays with 5V coils and 12V contacts. The real questions are: Do you know how much current the 5V output can deliver? Do you know how much current the AC needs?

Can I use 12V relay in Arduino?

These 12v relay board works well for Arduino/ ARM /PIC /AVR /MCU/Raspberry/CNC machine/ PS4 etc. The isolation circuit prevent damages to I / O port by relay switch current. The module has a jumper so you can set rather the unit state changes with high or low signal.

Can ESP8266 control motor?

NodeMCU based ESP8266 can be used to control the speed and rotational direction of DC Motor. NodeMCU has a PWM feature on its GPIO pins using which we can control the DC motor. To know about NodeMCU PWM refer to NodeMCU PWM with Arduino IDE or NodeMCU PWM with ESPlorer IDE.

Can I give 12V to ESP32?

The output from the Voltage regulator is connected to the Vin pin of ESP32 & GND is connected to GND. Hence you can power up the module using 9V/12V DC Adapter or by 9V Battery.

Can ESP32 drive a relay?

Using relays with the ESP32 is a great way to control AC household appliances remotely. You can also read our other Guide to control a Relay Module with ESP8266. Controlling a relay with the ESP32 is as easy controlling any other output, you just need to send HIGH and LOW signals as you would do to control an LED.

Is ESP8266 better than ESP32?

ESP32 is better than ESP8266 because ESP32 has extra features such as CPU core, Faster Wi-Fi, Bluetooth 4.0 (BLE), touch sensitivity pins, and built-in Hall Effect sensors and temperature sensors. The ESP32 has more GPIO pins as compared to the ESP8266.

Can ESP32 control relay?

Using relays with the ESP32 is a great way to control AC household appliances remotely. You can also read our other Guide to control a Relay Module with ESP8266. Controlling a relay with the ESP32 is as easy controlling any other output, you just need to send HIGH and LOW signals as you would do to control an LED.

Can Arduino control relays?

Controlling a relay module with the Arduino is as simple as controlling an output – you just need to send HIGH or LOW signals using an Arduino digital pin. With the relay module you can control almost any AC electronics appliances (not just lamps).

Can ESP8266 control motor?

NodeMCU based ESP8266 can be used to control the speed and rotational direction of DC Motor. NodeMCU has a PWM feature on its GPIO pins using which we can control the DC motor. To know about NodeMCU PWM refer to NodeMCU PWM with Arduino IDE or NodeMCU PWM with ESPlorer IDE.

Can ESP32 handle 12V?

The output from the Voltage regulator is connected to the Vin pin of ESP32 & GND is connected to GND. Hence you can power up the module using 9V/12V DC Adapter or by 9V Battery.

How many relay can I control with ESP8266?

You need to start using ESP32 if you need to control 16 relays. With ESP8266 you can control may be 10(max) because there are few pins which cannot be used as output.

Which is better ESP32 vs ESP8266?

The ESP32 is much more powerful than the ESP8266, comes with more GPIOs with multiple functions, faster Wi-Fi, and supports Bluetooth. However, many people think that the ESP32 is more difficult to deal with than the ESP8266 because it is more complex.

Can NodeMCU handle 12V?

Input Voltage:

The Input voltage is the same for both the microcontroller boards. The NodeMCU can be powered using voltages between 4.5V to 10V. The NodeMCU will also work with a maximum voltage of 12V.

Is ESP8266 5V tolerant?

Some people state that ESP8266 is tolerant of 5 V logic levels on its GPIOs, while others vehemently disagree, pointing at the datasheet-stated 3.6 V maximum. Datasheets aren't source code for compiling the chip, however, and aren't universally correct and complete either.

Can we give 12V to NodeMCU?

The output from the Voltage regulator is connected to the Vin pin of NodeMCU & GND is connected to GND. Hence you can power up the module using 9V/12V DC Adapter or by 9V Battery. On the other hand, if you don't want to power up the NodeMCU using DC Adapter, you can use 3.7V Lithium-Ion or Lithium Polymer Battery.

Do relays need AC or DC?

The operating voltage of a relay is generally in DC. Small signal relays and low voltage power relays are usually in DC, but mains control relays and contactors quite frequently have AC coils. The rest of the terminals of a relay are used to connect either a AC(generally 50/60Hz) or DC circuit.

Can a 5V relay handle 12V?

Can a 5V relay handle 12V? Yes. Probably. You need to find out the current that the relay coil needs when it is fed at 5 volts.

Can we give 12V to 5V relay?

12V will definitely damage the relay board.

This 2 channel relay board requires about 200mA at 5V with both relays energized. I suppose the simplest solution would be to use a 5W, 6.8V zener diode connected in series with 12V to drop it to 5.2V.