Remember the days when you would sit listening to WWV time signals on your shortwave radio (tick, tick, tick… At the tone, the time will be…)?
(Hear it on YouTube above)
Oh! You missed out on that? Now you can (re-)experience those moments and have your own WWV clock, no shortwave radio and no Internet connection required. Isn’t that what you always wanted?
Actually, this is a project to help show you how to connect a tiny OLED screen, a real-time clock (RTC) and an audio amplifier all to a single Raspberry Pi Zero! All with the bonus of being able to listen to WWV time “signals” anytime you wish.
Unlike the real WWV, the audio time signals as well as the admittedly tiny clock display will be only accurate to about one second of drift per day using the typical low-cost RTC module. You can improve this by using a higher quality (more expensive) RTC, or by just leaving the Raspberry Pi connected to the Internet, but this would never replace the atomic clocks of the real WWV. (See precision time keeping with Raspberry Pi articles, such as https://www.satsignal.eu/ntp/Raspberry-Pi-NTP.htm… )
Each Friday is PiDay here at Adafruit! Be sure to check out our posts, tutorials and new Raspberry Pi related products. Adafruit has the largest and best selection of Raspberry Pi accessories and all the code & tutorials to get you up and running in no time!
Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, or even use Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for MakeCode, CircuitPython, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.
Electronics — Have the need for speed? This diode might be right for you
Biohacking — Combining HIIT with a Polarized Training Plan
Python for Microcontrollers — Blinka goes to space, a sight for Thor eyes, and CircuitPython 4, beta 5… #Python #Adafruit #CircuitPython @circuitpython @micropython @ThePSF @Adafruit
Get the only spam-free daily newsletter about wearables, running a "maker business", electronic tips and more! Subscribe at AdafruitDaily.com !
Wow! Does this bring back memories. My first watch was a Hawaiian Punch watch. I would set it every morning using the Hallicrafters shortwave radio I had in my bedroom to either WWV or CHU Canada. It drove my mom crazy having to listen to that every morning.