In order to start using the ESP14, I had to ‘breadboard’ it first.
In the past, I tried various things to solder a plain ESP-12 on veroboard, and that has always been a tedious and time-consuming operation.
There are some ‘backplane’ PCBs available too for ESP-07/12 modules, but they do not bring out the 6 extra pins on the short edge opposite the antenna. This is not much of a problem for ESP-12E/F, but for ESP-14 those pins include the crucial E_GPIO0 required to flash the ESP8266:
I tried another technique this time with the ESP-14, the idea being to wrap it with copperwire, solder the pads and then remove the extra wires.
For this, I’m using copper wire from a telephony pairs cable such as this one:
I extract a single copper wire from it, and start wrapping it around the ESP-14, making sure the wires go across the 6 side pins:
After that, wire the 16 other pins the other way round, and solder the pins/pads to the wire:
Once all pads are soldered, start cutting the wire on the bottom side only, so making sure to keep the ones that are pointing down so that they can be used as pins afterwards:
Finally, prepare a veroboard with two rows of header pins:
Solder the ESP-14 using the made-up pins, and making sure there are no shorts:
Finally, cut and remove the wires that are passing across the top, above the ESP-14 shield:
Et voila, the final result, a breadboarded ESP-14: