A GPS controlled talking/chiming clockDesigned by Geppetto Electronics in United States of America
What is it? This is a talking/chiming clock that gets timing information from GPS. It announces the time at the push of a button, and can optionally sound out chimes. The clock has a flash EEPROM c...Read More…
This is a talking/chiming clock that gets timing information from GPS. It announces the time at the push of a button, and can optionally sound out chimes.
The clock has a flash EEPROM chip that contains audio samples that are used to construct the time announcements and chimes. It can chime (when the announcements are muted) by playing audio files on any by-the-minute schedule desired (the clock comes programmed with either Westminster Quarters or Whittington Chimes every 15 minutes). It has an onboard 1 kHz tone generator that is used to make the ticks and beeps.
There are four DIP switches on the board allowing you to configure up to 8 different time zones (by default support is included for continental US timezones, plus Alaska and Hawaii and UTC). The clock can be configured to use DST rules for the US, EU, Australia, New Zealand, or no DST. The fourth DIP switch enables or disables the chimes.
There is a balance trimmer on the board that adjusts the relative volume of the voice/chime audio against the ticks and beeps. There's also a volume control that is either a board-mounted trimmer or alternatively can be wired to a chassis mounted volume control.
The antenna connector is an SMA female jack. By default, it can supply up to 100 mA of 5V active antenna power, but there is a jumper that can be changed to supply 3.3V instead if desired (or opened for no active antenna power).
The accuracy of the clock is limited more by the latency caused by the speed of sound than anything else. In other words, it's as accurate as an aural clock can possibly be.
The clock comes as a board with all surface mount parts assembled and programmed. Just install the DIP switch, volume and balance controls (the sole through-hole parts), connect an antenna, speaker, power, and (optionally) add a CR1220 battery.
It can optionally come with a suitable antenna and/or power supply (3W+ @ 5V, 2.1mm barrel connector, center positive). You can use the on-board button or solder wires to a connector on the board to connect your own. A laser cut wood or 3D printed plastic case (4" x 4" x 2") is also available. If you order the clock with a case, then it will include a button, a speaker and a chassis-mounted volume control and knob. If you order your clock assembled, then it will be ready to use (just connect an antenna and power).
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Craig | Feb. 28, 2018
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