ESP8266 ESP-01 module experiments

Here is the schematic of my simple dev board:

ESP-01 mini programmer @ https://Mikronauts.com/esp8266/

(click on image for larger version)

I wanted something more than just hooking up a USB-TTL serial adapter, so I decided to use one of the PropPlugs (FT232 based) I have kicking around my lab – but in order to have partial isolation for the ESP-01 RX/TX pins I put a 470R resistor before the FTDI chip.

I used a EZasPie Proto 300 large prototyping board for the test rig. I added RESET, FLASH and USER buttons, and five LED’s to monitor TX, RX, GPIO0, GPIO2 and RESET – I used superbright LED’s with 1k current limiting resistors.

A power LED, and five male pins (from a pin header) completed the circuit.

Some male header pins so I could plug the whole board into a normal breadboard, where I used one of the handy breadboard power supplies to power the test rig.

ESP8266 ESP-01 Module Experiments https://Mikronauts.com/esp8266/

(click on image for larger version)

Some male header pins so I could plug the whole board into a normal breadboard, where I used one of the handy breadboard power supplies to power the test rig.

After buzzing the circuit to make sure there were no shorts, I fired it up!

ESP8266 ESP-01 Module Experiments https://Mikronauts.com/esp8266/

(click on image for larger version)

Serial terminal emulation software

I normally use one of three packages under Linux

  • screen – the old standby
  • minicom – more feature full, runs in a terminal
  • putty – gui terminal program

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You can also use the serial monitor built in to the Arduino IDE (under Tools).

Article Index

  1. Introduction, ESP-01
  2. Schematic, Serial Terminal Software
  3. ESP-01 AT Commands, ESP-8266 Arduino Core, Decisions

Pages: 1 2 3

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