ESP8266 Community Forum

- Sat Dec 26, 2015 2:31 pm #37179 Hi,

I've bought one of these boards but I can't program it. And on ESPlorer it just connect to the port when I put Rest pin to GND during a short moment. I actually have tried all baud rates possible and found on internet. Could you help me and say how you did with your board?

I'm using an FTDI USB converter.

- Sun Dec 27, 2015 10:57 am #37235

Hi,

I've bought one of these boards but I can't program it. And on ESPlorer it just connect to the port when I put Rest pin to GND during a short moment. I actually have tried all baud rates possible and found on internet. Could you help me and say how you did with your board?

I'm using an FTDI USB converter.

Hi,
Check out the thread here viewtopic.php?f=6&t=7289 as it may help. Make sure your FTDI ISB converter has 3.3v lines or you may damage the board.

Hope this helps,

DrG

- Wed Jan 06, 2016 3:58 pm #38077 Great original post. Helped me a lot to get along with the board.
Only one difference for me:

The CdS photo resistor is attached to the ADC on the ESP8266. Specifying port=99 will return the value of the ADC.

For me I can read the photo resistor with AO which is Pin 17 and not 99. 99 always return zeros, while reading analog PIN 17 return values between 4 (bright) to 95 (dark).

Thanks
Tim

- Thu Jan 07, 2016 9:22 am #38144

Great original post. Helped me a lot to get along with the board.
Only one difference for me:

The CdS photo resistor is attached to the ADC on the ESP8266. Specifying port=99 will return the value of the ADC.

For me I can read the photo resistor with AO which is Pin 17 and not 99. 99 always return zeros, while reading analog PIN 17 return values between 4 (bright) to 95 (dark).

Thanks
Tim

Thanks and I am glad it was of some help to you. You are, of course, correct about A0 and the CdS cell. In the .ino file I was using switch/ case after converting the ASCII to numeric in the string (e.g., port-99)...

Code: Select all   // this is for the ADC CDS resistor
    case 99:
      Ain=analogRead(A0);
    break;


... and since 00 was taken, I identified it as 99. Convenient albeit misleading

DrG