ESP8266

i bought some nice esp8266 version 01 from ali

with an CH341 serial uart usb adapter to programm with the arduino ide. u can use this driver or search through google. ch341ser.zip

for uploading code, you need to ground gpio0 and gnd to get the esp into program mode. i just used some staple pins to connect each other, sure better is a resistor, but the pins where too fat: