check my answer please.i have no time
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- a few questions about Digital Step-Km Counter circuit/help
check my answer please.i have no time
Hahahaha.
what a ... forumOriginally Posted by Mr RB
Hahahaha.
1.wonderful
2.excellent
3.good
4.none
Last edited by ssrssd; 5th September 2009 at 11:16 AM.
It is a wonderful electronics forum, it's not a do my school assignments for me forum.
This same person posted this same assignment on two other websites.
Uncle $crooge
Mr. Ethic youd better answer simple question rather than googling me and post others personal info.
please delete your ethical post
im really not happy to see it here if it was completely right
ya i got all but "how the dot of D1 light up every 32 pulses counted by IC2?whats the rule of Q2?"
and please do not judge others such easily
Last edited by ssrssd; 5th September 2009 at 07:34 PM.
Transistor Q2 drives the dot of D1. I don't see a current-limiting resistor so maybe it will burn out.
Inverter IC1D drives Q2.
The datasheet of IC2 (CD4024 counter) shows that its pin 4 output is its divide-by-64 output.
EDIT: the output of the counter has been corrected.
Last edited by audioguru; 5th September 2009 at 11:07 PM.
Uncle $crooge
ok so how dose it count 100 m (64 steps or pulses)?the pin 3 is not connected
datasheet attached
Sorry, I made an error. Pin 4 of the counter has an output each 64 counts.
Then display D1 will indicate "1".
Uncle $crooge
ok.how about 32 steps?
I'm sorry for laughing but I couldn't help it. I was reading down the thread, thinking "Gee I bet he is running out of time to get his homework assignment in" and the very last post was you saying;
The text of the project tells you what happens at 64 steps (a dot on one display lights) and at 128 steps (one display shows 1) but doesn't say that anything happens at only 32 steps.
I don't know why two steps makes one clock pulse.
Uncle $crooge
okI'm sorry for laughing but I couldn't help it. I was reading down the thread, thinking "Gee I bet he is running out of time to get his homework assignment in" and the very last post was you saying;
time got over yesterday im just here for learning and other things
it was not really an assignment i just answered unexpected question that was out of my knowledge and their teachings.
sorry its for insomnia. i meant 128 step or 64 pulses.64 steps or 32 pulses .both D1 dot & pin 1 are connected to output of IC1D directly and via Q2.i wonder how it can count both 50 & 100 m?
im reading mercury switch function when it finished may i give my opinion.
thanks again
Last edited by ssrssd; 6th September 2009 at 04:53 PM. Reason: change the state to " i meant 128 step or 64 pulses.64 steps or 32 pulses"
Mercury switch - Wikipedia, the free encyclopedia
let see
in walking one foot change in its position in first step and in second step it return to primary position
the switch in first step change the previous state for example change 0 (low) to 1 (high) and in second step change 1 to 0.it is one pulse
i think so and im not sure
you can watch walking online and put its link here
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