Since all of the data pins use 5 V, one of the solutions is to use a voltage regulator, such as LM2596.
You do not want a voltage regulator you need a level shifter.
You can buy them cheaply or make them up with a transistor or MOSFET.
I gather the ESP8266 has a Tx (transmit) to the Arduino. You probably don't need to level-shift that, as the Arduino Uno will interpret 3V upwards as a HIGH. For the Rx (receive) from the Arduino you need to level-shift the data pin (possibly a voltage-divider might work) since the 5V from the Arduino needs to be converted down to 3.3V.
The ESP8266 Vcc and CH_PD can go to the Arduino 3.3V pin.
Disclaimer - I haven't done this, I am summarizing what I read on various web pages. Read some of the answers on the pages you get when you do a Google search for more details.
References
Since all of the data pins use 5 V, one of the solutions is to use a voltage regulator, such as LM2596.
You do not want a voltage regulator you need a level shifter.
You can buy them cheaply or make them up with a transistor or MOSFET.
I gather the ESP8266 has a Tx (transmit) to the Arduino. You probably don't need to level-shift that, as the Arduino Uno will interpret 3V upwards as a HIGH. For the Rx (receive) from the Arduino you need to level-shift the data pin (possibly a voltage-divider might work) since the 5V from the Arduino needs to be converted down to 3.3V.
The ESP8266 Vcc and CH_PD can go to the Arduino 3.3V pin.
Disclaimer - I haven't done this, I am summarizing what I read on various web pages. Read some of the answers on the pages you get when you do a Google search for more details.
References
Since all of the data pins use 5 V, one of the solutions is to use a voltage regulator, such as LM2596.
You do not want a voltage regulator you need a level shifter.
You can buy them cheaply or make them up with a transistor or MOSFET.
I gather the ESP8266 has a Tx (transmit) to the Arduino. You probably don't need to level-shift that, as the Arduino Uno will interpret 3V upwards as a HIGH. For the Rx (receive) from the Arduino you need to level-shift the data pin (possibly a voltage-divider might work) since the 5V from the Arduino needs to be converted down to 3.3V.
The ESP8266 Vcc and CH_PD can go to the Arduino 3.3V pin.
Disclaimer - I haven't done this, I am summarizing what I read on various web pages. Read some of the answers on the pages you get when you do a Google search for more details.
References
Since all of the data pins use 5 V, one of the solutions is to use a voltage regulator, such as LM2596.
You do not want a voltage regulator you need a level shifter.
You can buy them cheaply or make them up with a transistor or MOSFET.
I gather the ESP8266 has a Tx (transmit) to the Arduino. You probably don't need to level-shift that, as the Arduino Uno will interpret 3V upwards as a HIGH. For the Rx (receive) from the Arduino you need to level-shift the data pin (possibly a voltage-divider might work) since the 5V from the Arduino needs to be converted down to 3.3V.
The ESP8266 Vcc and CH_PD can go to the Arduino 3.3V pin.
Disclaimer - I haven't done this, I am summarizing what I read on various web pages. Read some of the answers on the pages you get when you do a Google search for more details.
References
Since all of the data pins use 5 V, one of the solutions is to use a voltage regulator, such as LM2596.
You do not want a voltage regulator you need a level shifter.
You can buy them cheaply or make them up with a transistor or MOSFET.
I gather the ESP8266 has a Tx (transmit) to the Arduino. You probably don't need to level-shift that, as the Arduino Uno will interpret 3V upwards as a HIGH. For the Rx (receive) from the Arduino you need to level-shift the data pin (possibly a voltage-divider might work) since the 5V from the Arduino needs to be converted down to 3.3V.
The ESP8266 Vcc and CH_PD can go to the Arduino 3.3V pin.
Disclaimer - I haven't done this, I am summarizing what I read on various web pages. Read some of the answers on the pages you get when you do a Google search for more details.
Since all of the data pins use 5 V, one of the solutions is to use a voltage regulator, such as LM2596.
You do not want a voltage regulator you need a level shifter.
You can buy them cheaply or make them up with a transistor or MOSFET.
I gather the ESP8266 has a Tx (transmit) to the Arduino. You probably don't need to level-shift that, as the Arduino Uno will interpret 3V upwards as a HIGH. For the Rx (receive) from the Arduino you need to level-shift the data pin (possibly a voltage-divider might work) since the 5V from the Arduino needs to be converted down to 3.3V.
The ESP8266 Vcc and CH_PD can go to the Arduino 3.3V pin.
Disclaimer - I haven't done this, I am summarizing what I read on various web pages. Read some of the answers on the pages you get when you do a Google search for more details.
References
Since all of the data pins use 5 V, one of the solutions is to use a voltage regulator, such as LM2596.
You do not want a voltage regulator you need a level shifter.
You can buy them cheaply or make them up with a transistor or MOSFET.
I gather the ESP8266 has a Tx (transmit) to the Arduino. You probably don't need to level-shift that, as the Arduino Uno will interpret 3V upwards as a HIGH. For the Rx (receive) from the Arduino you need to level-shift the data pin (possibly a voltage-divider might work) since the 5V from the Arduino needs to be converted down to 3.3V.
The ESP8266 Vcc and CH_PD can go to the Arduino 3.3V pin.
Disclaimer - I haven't done this, I am summarizing what I read on various web pages. Read some of the answers on the pages you get when you do a Google search for more details.