but I saw somewhere on forum solution with a single pin control
(I found http://www.esp8266.com/viewtopic.php?f=9&t=911&p=5037&hilit=ESPAdapter.pdf#p5037 , in this case control via DTR )
SDM Energy Meter: https://github.com/reaper7/SDM_Energy_Meter
MLEDScroll (TM1640 led matrix): https://github.com/reaper7/MLEDScroll