/challenges-projects/design-challenges/1-meter-of-pi/b/blog/posts/mushrooms-paradise-11-rpi-controlled-components-in-detail-part-2-demo-runThe whole Mushrooms' Paradise blog 3v Relays IoT Relay Other The final result Demo run Data visualization by ThingSpeak Components (continued from Mushrooms' Paradise #9. PI components review in detail. Part 1 ) 3v Relays Thereen-USTelligent Community 12