ESP8266 freezes after few days
I made your project (VirtualKeypad-Blynk.ino), it is very useful and powerful. I use your ESP8266 blynk example, I havent modified it. The ESP sends data to my Blynk server which is on my local area network, working on an Orange PI Zero. I have also made your pcb with a 2n2222 transistor. Everything working fine for few days, 2 or 3 days. After the ESP freezes and need to hard reset. After reset it, working again. I have made some investigation, I have added a terminal and do some printing.  It say "Keybus buffer overflow". I increased the dscBufferSize in the library: src/dscKeybusInterface.h. Now I havent got buffer overflow, but it freezes as before. Does anybody have the same problem? Or yours working for months or years? I have 5v swithing regulator like this:
https://www.banggood.com/3A-UBEC-Module-Low-Ripple-Bluesky-Mini-Switch-Mode-DC-BEC-5V-12V-2-6S-Supply-p-993056.html?rmmds=search
, and I am powering the ESP on the Vin pin with 5V. 

Please help me!