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ESP-01 Power Requirements
Posted:
Wed Oct 19, 2016 6:32 pmby Corey Manshack
So I have the esp-01 with the esp8266 chip on board. I'm having trouble with my 3.3v regulator that offers 100ma of current, sometimes the esp8266 doesn't even power up.
I have 5V USB as my primary power source. What current requirement does this chip have? I also tried a voltage divider set of resistors but this works worse than the 3.3v 100ma regulator. Are there any recommended voltage regulators for running this chip?
Re: ESP-01 Power Requirements
Posted:
Thu Oct 20, 2016 6:23 amby carl
If you dont have a 3.3Volts regulator, you can make one,. You can use LM317 VOltage regulator, You can search for the R1 and R2 values to suit for your 3.3Volts requirement.
Re: ESP-01 Power Requirements
Posted:
Thu Oct 20, 2016 12:19 pmby lethe
100mA is definitely not enough, the ESP draws up to 300mA during Wifi transmissions.
Any regulator that can supply at least 300mA continuously should do, personally I have used XC6206 and cheap switch mode converters from aliexpress (labeled "mini 360") without issues.
I would also recommend adding a 100uF or higher capacitor (low ESR) on the 3.3V rail.
Re: ESP-01 Power Requirements
Posted:
Thu Oct 20, 2016 2:37 pmby Corey Manshack
carl wrote:If you dont have a 3.3Volts regulator, you can make one,. You can use LM317 VOltage regulator, You can search for the R1 and R2 values to suit for your 3.3Volts requirement.
I mistakenly purchased the lm317l which only provides 100ma current
That's what I'm using now.
I'm thinking about using the lm1117-3.3