start-with-esp-12-arduino
**This is an old revision of the document!**
Hardware
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ESP-12E module depending on module type additional wiring with resistors may vary. A few resistors have to be added to module 12E. On modules on next generation 12S or newer resistors may be on board or if the withe breakout board (
http://thethingofinternets.com/?p=4) is used two resistors are on the board.
12E needs:
one 10k resistor from GPIO to GND,
one 10k from EN (or labeled CH_PD) to VCC,
one 10k from GPIO0 to VCC,
one 10k from GPIO2 to VCC.
3.3V power supply or supply from adapter
USB-serial adapter (CH340G USB to ESP8266 Serial Wifi Module Development Board Adapter) this one has no switch for programming on board. USB zu (ESP8266 seriell Adapter ESP01 Programmierer ESP UART Arduino) also can be used is nearly the same sure others also will work, just make sure the have a lever changer on board.
If programming swish is missing one has to add the two jumpers or the switch.
Wire up Reset and Programming switch
RXD from adapter to TX on ESP12E and
TXD from adapter to RX on ESP12E,
GND to GND and
VCC 3.3V to VCC 3.3V of ESP12E if supply from the adapter is in use or an external 3.3V supply.
Additional Capacitors should also be added for more stability. 1nF plus 1000uF aluminium electrolytic capacitor proved to be best.
To use programming switch and reset switch from the adapter one also has to connect this two wires from adapter to the ESP12E.
Software
Setup and start test program blink
start-with-esp-12-arduino.1522567259.txt.gz · Last modified: 2018/04/01 07:20 by jpascher