ESP8266 Community Forum

- Wed Jul 18, 2018 3:48 pm #77217 Yes. The FTDI can supply up to 50mA at 3.3V which is nowhere near enough to supply the ESP8266.

You need to use a separate 3.3V supply or regulate down from the USB 5V

- Wed Jul 18, 2018 6:33 pm #77221 You need a supply that is capable of at least 300mA. The average consumption will be much less but there are times when the higher currents must be provided. From what I have read from Expresif documents the rf calibration at startup draws a lot of current. I think that time is a worst case situation.

- Thu Jul 19, 2018 8:41 am #77231 Morning.
I put on a stronger power supply (MB102 Breadboard Power Supply Module), and now after reboot of firmware load the red led does stay bright. Woot.

I also changed the script:
void setup() {
Serial.println("Hello world");
}
void loop() {
Serial.println("HIGH");
delay(1000);
Serial.println("LOW");
delay(1000);
}

I still get the Crash:
ets Jan 8 2013,rst cause:2, boot mode:(3,6)
load 0x4010f000, len 1384, room 16
tail 8
chksum 0x2d
csum 0x2d
v614f7c32
~ld

Questions
What is the correct Library?
Is it a memory size issue?
Is it a Wrong IDE Setting?
Should these be Pre Flashed with firmware?

- Thu Jul 19, 2018 9:13 am #77232 An MB102 is not sufficient. I tried these when esp8266 esp12 modules first came out and they cannot supply enough sustained current.