Relay switching using ESP8266 01
Posted: Sun Nov 29, 2015 12:49 amMy problem is
case 1:
step 1:
On powering circuit:
gpio 00 -> Led positive
common gnd
Led state-> OFF
Using openHAB I send ON command -> LED ON
OFF command -> LED OFF
step 2:
openHAB ON -> LED ON
openHAB OFF -> LED OFF
It works perfect with LED. and also with Arduino UNO . Initial reading of UNO is LOW.
Case 2:
On powering circuit:
gpio 00 -> Relay input
common gnd
Relay state-> ON . Input pin is HIGH unlike in the case of LED.By default it is in the ON state.
Using openHAB I send OFF command ->Relay OFF
ON command -> Relay ON
step 2:
openHAB ON -> Relay ON
openHAB OFF -> Relay OFF
Facing problem with relay & attiny85. Initial reading is ON unlike in case 1.
I think, I am facing this issue with the devices that do not have pull-up/pull-down resistors. I am not using any transistors etc., for switching.
Should I make changes in the circuit. ??
case 1:
step 1:
On powering circuit:
gpio 00 -> Led positive
common gnd
Led state-> OFF
Using openHAB I send ON command -> LED ON
OFF command -> LED OFF
step 2:
openHAB ON -> LED ON
openHAB OFF -> LED OFF
It works perfect with LED. and also with Arduino UNO . Initial reading of UNO is LOW.
Case 2:
On powering circuit:
gpio 00 -> Relay input
common gnd
Relay state-> ON . Input pin is HIGH unlike in the case of LED.By default it is in the ON state.
Using openHAB I send OFF command ->Relay OFF
ON command -> Relay ON
step 2:
openHAB ON -> Relay ON
openHAB OFF -> Relay OFF
Facing problem with relay & attiny85. Initial reading is ON unlike in case 1.
I think, I am facing this issue with the devices that do not have pull-up/pull-down resistors. I am not using any transistors etc., for switching.
Should I make changes in the circuit. ??