esp8266-01 and GPIO2 for 5v rele activation

fsitios wrote: HI, I want to control a single channel 5v relay (see photo) of an ESP8266-01 to turn on and off a mini 3V water pump (see picture). To control the relay I have to use the GPIO0 port of the ESP because the GPIO2 I am using it to measure soil moisture. The general idea is to watering the flowerpot when the soil is dry.

I have everything connected according to the attached diagram (sorry I did it by hand but I am not an electronic). So, when the pump starts(the relay is acticated) the whole circuit hungs (all the lights of all the components goes on). I also have another problem, to boot the ESP I have to disconnect the GPIO0 so that it drops in normal mode and then reconnect it to make the scheme work.

My questions are, what should I do to stabilize the circuit and make it work?, and what can I do to avoid disconnect and connect manually the GPIO0 all the time to start in "normal" mode?

Here are the details of the water pump:

DC Voltage:2.5-6V
Maximum lift:40-110cm / 15.75"-43.4"
Flow rate:80-120L/H
Outside diameter of water outlet: 7.5mm / 0.3"
Inside diameter of water outlet: 4.7mm / 0.18"
Diameter:Approx. 24mm / 0.95"
Length:Approx. 45mm / 1.8"
Height:Approx. 33mm / 1.30"
Material:engineering plastic
Driving mode: brushless dc design, magnetic driving
Continuous working life of 500 hours

Relay details:
Modulo Rele 5V - Simple Inversor - 250V 10A

Thanks in advance!!
Fernando

fsitios wrote: Thank you for the tip about the ESP8266-12.

What about the second issue?. I am using a P2N2222 transistor to switch off and on the DC, but I am getting this stuff in the debug terminal when the DC is turned on or off. I connected the GPIO0 to the transistor Base pin. Is this a correct circuit, isnt it?. Or what am I missing here?

ets Jan  8 2013,rst cause:4, boot mode:(3,0)

wdt reset
load 0x4010f000, len 1384, room 16 
tail 8
chksum 0x2d
csum 0x2d
v09f0c112
~ld

Regards,
Fernando