https://amzn.to/3PXubre
JALL 16” Large Digital Wall Clock: LED display with 8 RGB colors, remote control, dual alarms, auto DST, and temperature display. Perfect for living rooms, bedrooms, and as a gift for the elderly. #DigitalClock #HomeDecor #GiftIdeas

Me procrastinating

#digitalclock #iot #monitoring

Does anyone know where I can get hold of a AY-5-1202A clock chip? This one may have gone to silicon heaven.

#IntegratedCircuit #VintageClock #DigitalClock #VintageElectronics #GeneralInstruments
[02/02/2020]

It lives!

Noticed that this uses an AT89C2051 microcontroller and some research discovered that alternative open source code for it is available! So, some spare chips are on order so that I can play with the code and change what this thing can do.

Apparently the open source code keeps better time, and code to make it be a stopwatch exists too.

#AT89C2051
#SH-E879
#Electronics
#Microcontroller
#digitalclock

I had a lot of fun building this microcontroller based digital clock...

SH-E 879 Digital Clock Kit

If was not a difficult build. The board silkscreen was detailed and showed the placement and orientation/polarity of everything.

I decided to omitted R1. It is the charging resistor for a rechargeable coin cell. However, I am going to use a standard CR2032 coin cell and charging them is not a good idea.

#SH-E879
#Electronics
#Microcontroller
#digitalclock

Una pequeña actualización para conky (implementando perl para las fases lunares) pero ahora sin Sunlight World Map debido a las restricciones de Scraping (raspado con curl) desde https://www.die.net/earth/ 😢

veré si una solución para esto aparece en el futuro y lo comentaré por aquí.

https://drcalambre.blogspot.com/2023/09/conky-implementando-perl-para-las-fases.html

#antix #conky #perl #moon #faces #curl #openWeatherMap #brújula #compass #digitalClock #GNULinux #iceWM #SunlightWorldMap #viento #Weather #wind

Practical application of the new numerical display Scratch project: https://scratch.mit.edu/projects/677857864 (click the stage any where to toggle). What other applications might there be?

#scratch #coding #mathland #hourofcode #mathematics #mathed #onted #edtech #peel21st #codingforkids #makered #digitalclock

Accurate Digital Clock Keeps Ticking with FPGA

Even the most punctual among us are content to synchronize their clocks to external time sources like navigation satellite constellations, network time servers, frequency-controlled AC mains, or signals broadcast by radio stations such as WWV, CHU, and DFC77 -- but not [zaphod]. After building a couple of more traditional clocks over the years, he set his sights on making a completely isolated digital clock that doesn't rely on external synchronization (well, except to initialize the time at first power-up).

The accuracy goal he set for himself was that of a Casio F-91W wristwatch, which is specified to maintain +/- 30 seconds per month (about 12 ppm). At the heart of the design is an oven-controlled crystal oscillator whose stability is in the single-digits parts-per-billion.

The counter chain that accumulates the time is implemented in an FPGA -- admittedly overkill, but [zaphod] wanted to learn FPGA programming for this project as well. An ATmega328 drives the display and does other bookkeeping tasks. The whole design is partitioned into three PCBs which fit inside a custom 3D-printed case.

[zaphod] does a thorough job documenting his build, including the bugs and failures along the way. We like the honest summary he wrote at the project's conclusion, noting things that could be improved or should have been done differently. Be sure to check out the GitHub repository, where all the source code and PCB design files are posted. How accurate is your wristwatch, if you even wear one anymore?

#clockhacks #atmega328 #digitalclock #fpga #ovencontrolledcrystaloscillator