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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