Aideepen3PCS ESP8266 Development Board, ESP8266 Breakout Board GPIO 1 into 2 for ESP8266 ESP-12E NODEMCU V2

Works as expected. Bonus is there are two rows of pin holes. Not sure if this is for the ability to jumper in for testing or it is designed for two sizes of board. Regardles, handy to be able to put a quick jumper pin in to try out different ideas on bread board without clamping down the screw terminal.

This is a really great semi-permanent option for small projects. I used to use breadboards, but they don't work great and also cannot handle much current. This with the screw terminals makes it really easy to connect wires and can't handle more current.

First of all, unlike what another reviewer said, these are completely compatible with the HiLetgo 3pcs ESP8266 NodeMCU CP2102 ESP-12E. That happens to be what I'm using and they work fine.However, the mounting holes are super tiny. Even my M3 screws don't fit. I can't drill them out because they are too close to the edge. There's plenty of room for bigger, more useful holes! It would get 5 stars if the holes weren't so tiny.

These development boards are very convenient for connecting the ESP8266 pins to different devices. They have both push-in and screw-in terminals for each pin, which makes it easy to switch between different wiring configurations. I have used them to create some custom outdoor decorations with the ESP8266, and they saved me a lot of time and hassle. These are great for anyone who wants to experiment with the 12E boards and try out different ideas.

Each breakout board works really well for 30-pin 22mm-wide microcontrollers. They provide a solid interface through each screw terminal. The female headers also provide convenient connections during development. The PCB also has predrilled holes for optional mounting. I'm happy with this product and recommend it.