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Interfacing esp8266-01 with arduino nano

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tapu

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Hello friends ,
I want to connect gpio of esp8266-01 to any gpio pin of arduino nano.that means i want to control arduino nano by wifi network.here i can write arduino code.but my issue is how to design circuit for both microcontroller. Because esp01 operate in 3.3v and arduino nano requires 5v.please guide.
Thanks
Tepu
 
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Hi,

It all depends on the input threshod levels for HIGH and LOW at the according pins. And the according output levels.

I don´t like reading the datasheets for you . So please do on your own.
Look in the electrical specification section for V_OL, V_OH, V_IL, VIH ... for normal/your operation condtions.
Report them to us. (This makes 8 values in total for 2 microcontrollers)

*****
A sketch of the schematic would be helpful ... to show what you want to do.

*****
Also you don´t give any idea of
* the interface you want to use
* one direction / bidirectional data flow
* data rate
* distance between ESP and AruinoNano
* and so on..

Klaus
 
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Electrical charectristics as i have seen on datasheet as follow
Arduino nano:
Operating voltage_5v
Input voltage _ 7 to 12 v
Input current _ 40ma

Esp01:
Voltage _ 3 to 3.6v
Current _ 80ma

Here i want unidirectional current flow.and both controller in same board.
 
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Hi,

... not the values I asked for.

As a long term member you should know what a datasheet is, what a section is, what HIGH and LOW means, what "threshold level" means...

Klaus
 
Last edited:
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You can use a voltage divider or a level shifter to step down the 5V signals from the Arduino Nano to 3.3V to safely communicate with the ESP8266.
 
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