- Mon Dec 16, 2019 5:19 am
#84924
Hi,
Is there a way to control 8 relay switches using esp8266-01 with a shift register
Is there a way to control 8 relay switches using esp8266-01 with a shift register
- Thu Aug 20, 2020 12:59 am
#88395
I have done with 4ch but 8 
, I guess no way. Esp01 doesn't have much pin
, I guess no way. Esp01 doesn't have much pin
- Fri Aug 21, 2020 10:05 am
#88412
there are several options:
shift register with just two pins - not secure, makes your relais flicker during shifting
shift register with more pins - then you don't have serial
two pins for i2c i/o expander
shift register with just two pins - not secure, makes your relais flicker during shifting
shift register with more pins - then you don't have serial
two pins for i2c i/o expander
- Fri Aug 28, 2020 4:01 pm
#88527
Do you need the serial for debugging purposes? I personally use gpio pins 0, 1(TX), 2, 3(RX) all the time with no issue except for the fact I can't write to the serial monitor. Just set their pinMode to OUTPUT and use them like any other. Putting the Esp01 in programming mode completely ignores your pinMode setup. Of course, you can always try tapping other pins directly if you're up for it... I have 10 GPIO's with one of my ESP01's. For what its worth :/
