There are a number of regulators that will do the job. I normally use XC6303
There are a number of regulators that will do the job. I normally use XC6303
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davydnorris wrote:Does the ESP-01 board have a LED? Is it on when you turn on the switch?
Would be really good to see the current draw - can you wire a multimeter into the circuit?
Also what is your sketch doing? If you have the wifi turned on then the current draw is quite high
btidey wrote:I think the problem is with the choice of regulator. The HT7133 is a low power regulator designed to supply currents up to about 30mA. The ESP8266 modules require a powering with something that can supply 500mA peak although the average operating current is about 80mA.
There are a number of regulators that will do the job. I normally use XC6303
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