Moderators: Dave Moll, Andrew Davie, Steve Anderson
gary wrote:Hmmmm, y'know Albert, what you are ending up with here is a NBTV version of the digital photo frame!
harry dalek wrote:No worries Albert its a little mistake but i can see but its a lot of rewiring ..shes a complicated beast !
harry dalek wrote:Dr Z has a video of one of these things going from a past convention on he's you tube channel...yours will be Black and white while this uses Red leds.
https://www.youtube.com/watch?v=tF_EbWKso1Y
Steve Anderson wrote:I would suggest as you already have done, in resetting the counter/oscillator system once every frame or line somehow.
Steve A.
Viewmaster wrote:Baird's commutator on his lamp display would not have allowed this to be done, so maybe it has never been seen on NBTV before.![]()
(but maybe Steve has seen it on his CRT display?)
Viewmaster wrote:...but maybe Steve has seen it on his CRT display?...
Steve Anderson wrote:Viewmaster wrote:...but maybe Steve has seen it on his CRT display?...
Yes, a positive pulse on the MR pin will stop and clear the 4060 counter, it also stops the oscillator. I have no idea how quickly these oscillators will re-start but probably quick enough for this display. What frequency is the crystal? And which output are you using (pin No.)?
Steve A.
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