You would need an oscilloscope which I doubt you have. This will be only a few µsec and will NOT be readable with a multimeter. IF YOU FIT THE COMPONENTS I NOMINATED you should have a narrow positive going pulse at row 19 corresponding to the rising edge of the pulse at row 18. This will change with different duty cycles. If you have a continuous stream of pulses of 50% duty cycle a multimeter will read the average which will be half the peak value. Row 18 should be pulsing high courtesy of the 555. I think I have worked out which rows are which.
That is what capacitors generally do, remove any DC component. Something about my loop, or my capacitor, is preventing row 19 from going high (?). Using my multimeter row 18 is HIGH and row 19 is LOW. I don’t think the 2 logic ICs will drive LEDs, The 555 might but not with 22Ω limiting resistors. You also haven’t answered the questions I raised about the 82 and 22 ohm resistors in your earlier pics yet. There are diodes and diodes, capacitors and capacitors, different types have different tasks and uses. In a nutshell if you are going to go off with what you think are the correct parts and not use what is advised there is not much anyone can do for you. This would be in your terms from row 18 to ground. Without this the capacitor will only probably charge up for the first pulse then do nothing if it cannot discharge. I don’t see any sign of a resistor from the junction of the 2 diodes to ground. By the way, the term is FARAD not FERRET, That is an animal.ĭid you not read the whole of my last large post. It looks suspiciously like a ceramic and if it is it would be lucky to be more than 100pF. These would be useless in this application.Įxactly what is that capacitor.
#555 TIMER ARDUINO SERIES#
More like the 1N400X series of power diodes. Especially as the numbers don’t appear in your pix. The use of terms like “row 21, row 20” is Swahili unless one knows what these rows are connected to. Just now got home and confronted with this.įirstly. I’m also working my way through Differentiator articles. Then I’ll clean up or make a new diagram. I think I’ll deconstruct it a bit and recheck the wiring to make sure everything better. Maybe once I’ve got a handle of the 555 timer I can decide to simplify everything and use this approach. I’m just enjoying hardware for a while and trying crazy over designed ideas seems to be the quickest way to learn. This is not to say that I don’t have more to learn about software.
#555 TIMER ARDUINO CODE#
I could code up some C++ to do the same thing. Hi All of this is strictly for my own education. In fact, technically none of the external circuitry is needed, though interrupts are crucial to learn, so good on you for doing it in a more interesting but convoluted way.
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