voerou

Thanks for fast reply, Mark Feeding back the output of the OR to the 4060 to reset it, is much better than my idea of using a AND gate (74HC08) and another pin of the 4060 to reduce time BLANK of tlc is set high. Very good idea! Have you already tried? Is the time BLANK is set high not to short for the tlc? I´m really happy to find a solution for my proplem with the tlc! I tried for many times in different ways to control it with a ATMEGA feeding the GSCLK via toggling a pin by timer or directly. All attempts lead to a insufficient result. (Yes, i´m a perfectionist ) I heard about the Netduino in another forum, fascinated of coding a µc in C#, i ordered one and started to read more about it. And here i found a solution for my "old" problem... cool!!! Unfortunately i´m on an business trip, but parts for testing are already ordered and they´ll waiting for me when i´m back at home! Best regards, Rouven

Hi there, i´ve got a question concerning the clock circuit and the 74HC4060, is my understanding correct that the 74HC4060 just divides the clock signal by different values (2, 4, 8, ... 4096,....) and toggles the corresponding pins? If so, the tlc is working for 4096 cycels and then it is stopped for 4096 cycles because BLANK is set to high for the same time!? Therefor the LED´s are driven by a "two-stage" pwm, 1st generated by the 74HC4060 with a dutycycle of 50%, 2nd generated by the tlc according to actual greyscale data!? To reach a higher dutycyle is it possible to throw a 74HC08 behind the 74HC4060 where the inputs of one gate are connected to the 4060-Q12 and e.g. Q9 (depending on shortest time the tlc rec. blank toggle) Is my thinking correct? Best Regards, Rouven