Scope/CRT Clocks

By David Forbes / Cathode Corner

$999 / on sale soon-ish.



The second version of the Scope Clock is currently in production and will hopefully be on sale soon. The display of the clock is a CRT display originally intended for oscilloscopes. All of the display characters are drawn as vector images, unllike the AVR based Scop Clock kit sold by SparkFun Electronics.

In the updated version of the Scope Clock, the housing has been completely redesign to fit in a much smaller cylindrical housing. I can’t tell for sure but it appears to still be based on the 3RP1A CRT. The time is set via GPS. You need to program the UTC Offset and DST parameters but once it finds a GPS signal, this will be the most accurate clock in your house!


The new version:

The original version:

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