ESP8266 Community Forum

- Mon Jun 05, 2017 3:02 pm #66766 Hi everyone,

I'm new with the ESP01, and I'writing here to get (hopefully) some support with flashing the ESP01.
So far I have not been able to write anything to the board.

==> Could you please help me to understand what I'm doing wrong? I believe I'm doing some mistake with wiring.

For the HW I'm using, please take a look at the section "hardware" below.

Test I've done
1) Following this guide, paragraph "What do I have to connect?", the port on the mac is not recognised. Is the described wiring wrong? The port has never been recognzized.
URL: https://benlo.com/esp8266/esp8266QuickStart.html

ESP01 Wiring
- ESP01 RX --> FTDI232 TX
- ESP01 GPIO0 --> GND (the ATX power source)
- ESP01 GPIO2 --> not connected
- ESP01 GND --> GND (the ATX power source)
- ESP01 VCC --> 3.3V GND (the ATX power source)
- ESP01 RST --> 3.3V GND (the ATX power source)
- ESP01 CHPD --> 3.3V GND (the ATX power source)
- ESP01 TX --> FTDI232 RX

FTDI232 Wiring
- DTR --> not connected
- RX --> ESP01 TX
- TX --> ESP01 RX
- Vcc --> not connected
- CTS --> not connected
- GND --> GND (the ATX power source)
- USB --> MAC

2) Following this guide, with a different wiring... no success. Initially the port was recognised, than any more.
Initially I got this error (that by the way looks to be quite frequent):

Code: Select allwarning: espcomm_sync failed
error: espcomm_open failed

URL: http://www.arduinesp.com/getting-started

ESP01 Wiring
- ESP01 RX --> FTDI232 TX
- ESP01 GPIO0 --> FTDI232 CTS
- ESP01 GPIO2 --> LED (+)
- ESP01 GND --> GND (the ATX power source)
- ESP01 VCC --> 3.3V GND (the ATX power source)
- ESP01 RST --> FTDI232 DTR
- ESP01 CHPD --> 3.3V GND (the ATX power source)
- ESP01 TX --> FTDI232 RX

FTDI232 Wiring
- DTR --> ESP01 RST
- RX --> ESP01 TX
- TX --> ESP01 RX
- Vcc --> not connected
- CTS --> ESP01 GPIO0
- GND --> GND (the ATX power source)
- USB --> MAC

Hardware
- I'm using Arduino IDE on a mac to program the board, and I have installed the extension for the esp8266.
- To the usb port I've connected a usb to serial converter, FTDI232. These are the ports of the device: DTR, RX, TX, Vcc, CTS and GND. The pin to set the voltage is on 3.3V.
- The usb to serial converter is connected to the ESP01. The speed is set to 115200, I haven't changed other params.
- I use an ATX power source from an old PC to power the ESP01. From this power source I'm getting the 3.3V and I'm using its GND.
- I'm using a breadboard to wire everything.

This is the code I'm trying to flash.

Code: Select allvoid setup() {
  // put your setup code here, to run once:

}

void loop() {
  // put your main code here, to run repeatedly:

}

- Tue Jun 06, 2017 8:22 am #66809 try to leave reset pin alone (not connected)