I designed a single-sided ESP-12/ ESP-07 breadboard adapter PCB which will be easy to etch and solder for anyone who loves to play with the ESP8266 on a breadboard like me.
Eagle files are in my github repo
Features are:
* Fits ESP-12 and ESP-07 module
* Single-sided self-etchable design
* Few, cheap parts in SMD
* Breadboard-style - one row on each side accessible
* Vin >4.5V (max. 7V) input possible with 3V3 onboard voltage regulator (with two capacitors 10µF)
* Power-indicator LED
* (Schottky-) Diode as reverse polarity input protection possible (solder 0 Ohm resistor or just connect the two pads for no protection)
* RST, CH_PD, GPIO0 with 4k7 pull-up resistors on board (resistors can be omitted if remote access of those GPIOs is needed)
* GPIO15 with 4k7 pull-down (see above)
* Tactile switch connected to GPIO0 to get into flash mode
* Single post for 3.3V output near voltage regulator
Parts needed:
- 1x Voltage Regulator (e.g, AMS1117-3.3V, 800mA)
- 2x 10µF SMD ceramic capacitors
- 4x 4.7k SMD Ohm resistors
- 1x 330 SMD Ohm resistor
- 1x SMD-LED (1006)
- 1x 4*4mm SMD tactile switch
- 2x 1*8 pin header (pitch 2.54mm)
- optional: 1x Schottky-diode SMD
* Antenna part now protruding the PCB (no traces below antenna)
* Wider traces
* Schottky diode for reverse polarity protection
* 2x 10µF ceramic caps for input/ output of AMS1117
* Single post for 3.3V Output near voltage regulator
