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You will have to use a receiver and library for your area. The code will need to be modified to suit the library.
Hi JeffL117.If you take a look at the schematic there is a 10K preset resistor in series with the clock coils. I just adjust the resistor until I get a nice kick to drive the quartz movement. You want enough to just drive them to keep wear to a minimum. There are also a couple of zener diodes to prevent back emf from damaging the Arduino outputs but I don't think they are essential. Sorry if it takes me a while to reply but my Instrucatables messages keep ending up in my spam folder.
The clock does not know where the hands are if it loses power it will be out by the amount of time the power was out for. It practise the clock have battery backup.My system uses a lead acid battery to keep them all running if power goes out. See my back-up power circuit here http://home.btconnect.com/brettoliver1/Battery_Bac...
I have put a copy of the Time library on my site here http://home.btconnect.com/brettoliver1/Time.zip
The big wheel just give a smoother and slower step. Did you download the code from my link ? Try this link from my web site http://home.btconnect.com/brettoliver1/Timelapse_Panorama/Timelapse_Panorama.zip
Hi GeeksTipsDotCom I have used one of those modules in my Arduino Geiger Counter http://home.btconnect.com/brettoliver1/Geiger_Counter/Arduino_Geiger_Counter.htm
Thanks DK84. I just use 2 wire or sometimes Cat 5 cables with bunched pairs. I have no problems with transmission lag, there is probably more variance between electromechanical clock motors than the time it takes for a drive pulse to reach them from my Master Clock. I did have an issue with noise on the 24 hour pulse to my old slave calendar clock but this was solved with an R/C filter at the slave end.
Hi Phil S43.I did a similar thing with my Pong clock that also runs off a DS3231 and tends to drift. I just connected it to my 30 second output on my LCD Master Clock to re-sync it every 30 seconds.
Maybe using "pube control" the accuracy would increase?
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Hi the fuse is an EYP-2BH115 shuts down at +115°C and will run at 2 amps.Yes it is definitely overkill. I have a large common power supply that drives all my clocks etc and it can deliver 8 amps so I am very cautious when I connect anything to it especially as they are running 24/7. All the cables coming out of the power supply and running round my house are fused at less than their current capacity. The coil should not get hot or even warm in normal use but in the case of a fault I am not sure what sort of current these coils would take to overheat and catch fire.If you are using a low power PSU from a reliable source then it will prob shut down itself well before any high currents are output to the clock.
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