Collaborate Disseminate
Pocket watches are all well and good, but they have some caveats. They either need regular rewinding, or they need batteries. Sundials on the other hand need only the light …read more Continue reading Broken Pocket Watch Becomes Pocket Sundial
We see a lot of clocks, and many of the better ones have some 3D printed elements to them. But [Carl Sabanski] shows us his kits for making sundials for …read more Continue reading Sundial Collection is 2D Printed
The US Senate has approved the “Sunshine Protection Act”, a bill to make Daylight Saving time the default time and do away with the annual time changes. While I can …read more Continue reading High Noon for Daylight Savings Time
We’re always a fan of an interesting or unique clock build around here, which often use intricate pieces of technology to keep time such as weights and gears, crystal oscillators, …read more Continue reading Precise Sundial Tells Time to the Minute
Sundials, one of humanity’s oldest ways of telling time, are typically permanent installations. The very good reason for this is that telling time by the sun with any degree of accuracy requires two-dimensional calibration — once for cardinal direction, and the other for local latitude.
[poblocki1982] is an amateur astronomer …read more
Continue reading Sun-Seeking Sundial Self-Calibrates in No Time
[Xose Pérez] set out to make a sundial wristwatch by combining a magnetometer a small nylon bolt for the gnomon, but it doesn’t work like you’d think. Instead of using the magnetometer to point the sundial north, you angle the watch until the bolt’s shadow matches the white line on the PCB, and the ATmega328P computes the azimuth of the sun and determines the time thereby. To display the time he used one of those QDSP-6064 bubble displays, because sundials are retro.
His description of the project build includes a lot of fun anecdotes, like him attempting to solder the …read more
