Hackaday (unofficial) June 21, 2024 4:00pm See Them Knocking with a Doorbell Alert #homehacks #555timer #556timer #9v #doorbell #led #hackaday posted by pod_feeder_v2 See Them Knocking With A Doorbell Alert Picture it: you’re on the treadmill, running through a forest, sweating like a pig, and the doorbell rings because a package is being delivered. Would you even hear it? Chances are, if you…
Hackaday (unofficial) September 4, 2021 6:00am Retro Shield Replaces Springs With Jumpers, Includes Blinkenlights! #arduinohacks #radiohacks #556 #556timer #blinkenlights #lm386 #retroshield #hackaday posted by pod_feeder_v2 Retro Shield Replaces Springs With Jumpers, Includes Blinkenlights! Is it an AM radio? Yes. It is a 555 LED flashing circuit? Yep. How about a hex counter with a 7 segment display? That too. Five different colored LED’s to satisfy your need for blinkenlights?…
