oliverb
Member
bunghole said:hello, i saw the parts list and the diagram. are the parts list for the diagrams?
ta
Yes the part lists are for the diagrams and should be 99% correct so should be used as a guide only.
Brett.
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bunghole said:hello, i saw the parts list and the diagram. are the parts list for the diagrams?
ta
I believe it's a better approach too. It seems you have much finer control tuning that "heartbeat" signal compared to a ceramic trimmer capacitor in the oscillator circuit. I'm experiencing 'drift' of less than 1 second/month and it seems my quarterly adjustments now are just chasing temperature drift and crystal aging.bobledoux said:Its been an interesting project. I've been impressed with the consistency of a regular microprocessor crystal at room temperature. In my first controller I unsuccessfully tried to vary the crystal frequency by using a variable capacitor in the crystal line. I've since decided that changing the delay period in software is a better approach.
I want use this clock for marketinglsaeeddavish said:Dear sir
I want to build a big led digital clock with seconds display.kindly send me a full schematic diagrams of digital led clock.
Just added a new slave to my masterclock system.
This is built in the style of a regulator and uses 3 modified quartz clock movements to display hours mins and seconds in a 12" office dial clock case.
I found my master clock could only drive 3 clock motors using the 4093b chip. I was already driving 2 slaves from this output and as this new clock had 3 seperate clock motors I have now added a "repeater". The repeater sits inside one of my clocks and can drive upto 6 clock motors.
Full details here **broken link removed**
PS I have added a short animation showing the master driving an analogue and binary slave and electro mechanical chiming to You Tube YouTube - masterclockmovie.mpeg