Previous Image Next Image 1 GPIO, bi-colour LED, common cathode, inverter Using an inverter to alternate between two LEDs using one GPIO. Please link to us if you find the information helpful ...<br>TwitterFacebookPinterestDiggLinkedinRedditStumbleUponTumblr Please link to us if you find the information helpful ...<br>TwitterFacebookPinterestDiggLinkedinRedditStumbleUponTumblr