Post topics, source code that relate to the Arduino Platform

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By martinayotte
#3223
zioax wrote:I'm using the 3.3v output from arduino. Why?


Well, it is mentionned several times in the forum that the ESP needs around 300mA in surge when transmitting.
The Arduino 3.3V is limited to 100mA, this means that during the surges, the 3.3V will drop strongly.

You need an external 3.3V power supply. If you don't have one, take a 5V and add a 3.3V Linear Regulator.
User avatar
By zioax
#3260
martinayotte wrote:

Well, it is mentionned several times in the forum that the ESP needs around 300mA in surge when transmitting.
The Arduino 3.3V is limited to 100mA, this means that during the surges, the 3.3V will drop strongly.

You need an external 3.3V power supply. If you don't have one, take a 5V and add a 3.3V Linear Regulator.


I know it.. But the module work very well without any problems!
User avatar
By CheapB
#3272
zioax wrote:
martinayotte wrote:

Well, it is mentionned several times in the forum that the ESP needs around 300mA in surge when transmitting.
The Arduino 3.3V is limited to 100mA, this means that during the surges, the 3.3V will drop strongly.

You need an external 3.3V power supply. If you don't have one, take a 5V and add a 3.3V Linear Regulator.


I know it.. But the module work very well without any problems!


I did the same in the beginning and I got random busy messages and reboots.