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my damn mail provider says causes trouble, yahoo says mail undeliverable - bouncing mails (or something similar). i missed several messages and have to read them online.. hope it works now.. sorry for

Posts are getting randomly delayed. If you post something and it doesn't show up within a few minutes, please give it a while longer (couple of hours). Its getting confusing seeing multiple variants

<ghidera2000@y...> wrote: Zero volts and any reverse voltage up to the maximum for a 1N4148 wil stop current flowing though it (except for the leakage current). A small positive voltage will produce a

You only need a delay that is long enough to produce the interrupt pulse width required to trigger the microprocessor. If that is say 250ns, you need to delay by at least that. A resistor to one input

At the risk of being branded a microcontroller bigot (I'm not, really!), why not do this solely in the mcu? Debounce is pretty easy (most bouncing occurs for about 1-2 mS, according to Horowitz/Hill)

You might look at the 4528 CMOS multivibrator - it can be triggered on either a positive or negative edge. Alternatively, you could make two half monostables and OR them together. Don Lancaster, in

In a message dated 4/8/2004 7:10:47 PM Central Standard Time, ghidera2000@... writes: On the datasheet, I see Vfr - (Forward voltage recovery) at 2.5V. Would that mean that it needs 2.5 or

In a message dated 4/8/2004 12:05:16 AM Central Standard Time, sd7008us@... writes: I need to generate an interrupt pulse on every edge (rising or falling) of an input signal to a MCU. Any idea

WELL SAID!!!!!!!!! ================== I dont disagree that the learning curve is a big barrier (as I did point out earlier) but the benefits of soft logic and a single package make it a totally

I tried to respond to the post, but has not apeared on the messages board yet. Anyway, it turns out I only need 600ns interrupts pluse. Any idea what is the best way to delay the second input of the

Hi All, It turns out, I only need 600ns delay on the interrupt pulse. What is the best method to delay the second input signal to the XOR gate? There is PLD gates avilable in the MCU. Would a series

Thanks all for the responds. How about we doing the following way? Would it consider a workaround (not a clean way)? The foo signal is coming from a push button and we need to interrupt the MCU every

Though I am a proponent of using microcontrollers in appropriate problem solutions, this problem is not an appropriate use of them. A quad 2-1 mux will solve the problem. It is much faster than a

I dont disagree that the learning curve is a big barrier (as I did point out earlier) but the benefits of soft logic and a single package make it a totally worthwile and appropriate solution. I would

<electronguy@e...> wrote: your input power connector is wired so that it shorts out the battery. Doh! I put the battery+ to ground instead of the supply... Good spotting ;) I've actually done a lot of

I'm trying to figure out at what voltage (reverse) would a 1n4148 shut off current flowing through it. e.g. 5 volt supply being opposed by a 3.3V reverse voltage. On the datasheet, I see Vfr -

I would argue that for a novice, the micro, software, programmer board are a barrier to getting the job done. The person would have to learn C or ASM or use one of the free demo (can you spell

PICs are an emotive subject. For a small IC, they seem to stir up a great amount of feeling There is not doubt that Micropchip have done a great marketing job to get them so well recognised and into

yes that is a way better idea than the monoflop... ST

SD, An exclusive OR gate would do this by delaying the signal to one input with a resistor and capacitor (and schmitt trigger if the delay is long). However, can you not switch the interrupt trigger