Re: 4 GPIO ports of ESP8266-01 control 4(5) LEDs
Posted: Wed Jun 03, 2015 5:12 am> there are 5 wires to breadboard (1 for each led, and VCC) ??
>
No, the 5th (black) line is GND, so "active high".
You made a good point, changing GND to VCC would make the external LEDs "active low".
The connector pins are (from back to front) TXD/GND/GPIO2/GPIO0/RXD/VCC(unused below), see here
Hermann.
>
No, the 5th (black) line is GND, so "active high".
You made a good point, changing GND to VCC would make the external LEDs "active low".
The connector pins are (from back to front) TXD/GND/GPIO2/GPIO0/RXD/VCC(unused below), see here
Hermann.