WWVB Self Setting Analog clock on Amazon is $34.99. Dozens of styles. No DHCP to configure. It just works. But cool HN try.
Converting a $3.88 analog clock from Walmart into a ESP8266-based Wi-Fi clock
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Re: Converting a $3.88 analog clock from Walmart into a ESP8266-based Wi-Fi clock
#122$3.88 ? Walmart.com uses dynamically variable pricing that includes geographic and user variance - my price is $5.92
https://www.walmart.com/ip/Mainstays-Basic-Indoor-8-78-Black...
Re: Converting a $3.88 analog clock from Walmart into a ESP8266-based Wi-Fi clock
#123WWVB Self Setting Analog clock on Amazon is $34.99. Dozens of styles. No DHCP to configure. It just works. But cool HN try.
Wow your ability to research products is truly inspiring! We should campaign to get this site renamed to buyer news to reflect what really matters in life.
Re: Converting a $3.88 analog clock from Walmart into a ESP8266-based Wi-Fi clock
#124Related - we have an atomic Seiko wall clock expecting to have the time automatically adjusted by the WWVB LF atomic clock broadcast. Turns out, the signal is very weak where we now live. Manually setting the time on these atomic clocks is a HUGE pain (beware!). Turns out it's possible to emulate the atomic clock signal quite easily with a Raspberry Pi, or in my case I put together Arduino code that can emulate atomi…
I would be very careful of transmitting on the same frequency as WWVB. It is very likely illegal.
Re: Converting a $3.88 analog clock from Walmart into a ESP8266-based Wi-Fi clock
#125One thing with stepper motor h bridges is that you need to account for back current that might at the least cause spikes leading to misfires or worst frying your microcontroller. The ideal way to protect is is using opto electric transistors to drive the motor with a gate voltage connected to the microcontroller and isolated power supply for the motor.
Re: Converting a $3.88 analog clock from Walmart into a ESP8266-based Wi-Fi clock
#126If your budget is a bit more, and you want to hear a massive clunk every 30 seconds rather than a soft tick and you want to drive 2' (60cm) hands, then you might want this: https://waitingtrain.blogspot.com/2015/05/a-large-gents-turr... The smaller ones look the same but are less beefy. I used one to make this clock: https://www.secretbatcave.co.uk/projects/electromechanical-c... Which instead of using a well discipl…
The DIY tuning fork clock is very cool. I am hard pressed to understand why accutron doesn't still make and sell tuning-fork watches. I really admire the creative use of resonance frequencies (not dissimilar to quartz watches but cool that you can really see the tuning fork for you watch as opposed to a diminutive quartz crystal).
Re: Converting a $3.88 analog clock from Walmart into a ESP8266-based Wi-Fi clock
#127WWVB Self Setting Analog clock on Amazon is $34.99. Dozens of styles. No DHCP to configure. It just works. But cool HN try.
Do you try and suck the joy out of everything, or just things on HN?
Re: Converting a $3.88 analog clock from Walmart into a ESP8266-based Wi-Fi clock
#128I'm sure there's huge demand for remote time sync . many buildings have dozens of these that need setting during daylight saving time change.
Re: Converting a $3.88 analog clock from Walmart into a ESP8266-based Wi-Fi clock
#129This will pair nicely with the eps8266 i just flashed after ripping it out of a Wyze plug that required I download their app, updating my operating system first of course, make an account and agree to their privacy policy.
Re: Converting a $3.88 analog clock from Walmart into a ESP8266-based Wi-Fi clock
#130What's the best way to periodically get time and date if your customers are big businesses with hostile IT departments?
Most 'big businesses' I've delt with have a time server someplace internal. It may be a stand alone NTP server, a network device like a Cisco router or a Windows AD server. You might ask the network team/Windows admin team nice and see what they have.