I would like to point out something very serious.
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I would like to point out something very serious. Years ago I developed a technique for shifting serial data into a 74hc595 chain without use of a microcontroller. I have not been able to help but notice that people have been using raspberry pi's instead of my simple circuit.
For the same reason you DONT actually need 32G of ram to run a web browser, you don't need to use a Pi to convert serial data to parallel. I mean cmon, Its using a 555 as a BUFFER. a BUFFER!
https://github.com/ruenahcmohr/serial-595-9600
Please conserve the technology people.
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I would like to point out something very serious. Years ago I developed a technique for shifting serial data into a 74hc595 chain without use of a microcontroller. I have not been able to help but notice that people have been using raspberry pi's instead of my simple circuit.
For the same reason you DONT actually need 32G of ram to run a web browser, you don't need to use a Pi to convert serial data to parallel. I mean cmon, Its using a 555 as a BUFFER. a BUFFER!
https://github.com/ruenahcmohr/serial-595-9600
Please conserve the technology people.@RueNahcMohr but you need cleverness, and that one sometimes seem to be in short supply these days.
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@RueNahcMohr but you need cleverness, and that one sometimes seem to be in short supply these days.
@f4grx ah, unless its in a datasheet...
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I would like to point out something very serious. Years ago I developed a technique for shifting serial data into a 74hc595 chain without use of a microcontroller. I have not been able to help but notice that people have been using raspberry pi's instead of my simple circuit.
For the same reason you DONT actually need 32G of ram to run a web browser, you don't need to use a Pi to convert serial data to parallel. I mean cmon, Its using a 555 as a BUFFER. a BUFFER!
https://github.com/ruenahcmohr/serial-595-9600
Please conserve the technology people.@RueNahcMohr I almost understand how this works! I don't quite see how the clock stays low with the data & latch changing, but that might be not understanding the full signal out of the 555.
Are the 22nFs just there for smoothing?
Anyway, I can see how cool this is, and as someone without any real education in electronics, I'm impressed by the clever simplicity. -
I would like to point out something very serious. Years ago I developed a technique for shifting serial data into a 74hc595 chain without use of a microcontroller. I have not been able to help but notice that people have been using raspberry pi's instead of my simple circuit.
For the same reason you DONT actually need 32G of ram to run a web browser, you don't need to use a Pi to convert serial data to parallel. I mean cmon, Its using a 555 as a BUFFER. a BUFFER!
https://github.com/ruenahcmohr/serial-595-9600
Please conserve the technology people.@RueNahcMohr I need much more information to understand why I am so stupid.
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I would like to point out something very serious. Years ago I developed a technique for shifting serial data into a 74hc595 chain without use of a microcontroller. I have not been able to help but notice that people have been using raspberry pi's instead of my simple circuit.
For the same reason you DONT actually need 32G of ram to run a web browser, you don't need to use a Pi to convert serial data to parallel. I mean cmon, Its using a 555 as a BUFFER. a BUFFER!
https://github.com/ruenahcmohr/serial-595-9600
Please conserve the technology people.@RueNahcMohr Yesss love to see some transistor golf. Those fast-on/slow-off (or vice versa) delays have served me well many times as dead time generators in half-bridge switching logic.
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@RueNahcMohr I need much more information to understand why I am so stupid.
@adingbatponder
- no microcontroller
- serial wire input
- as many parallel outputs as you want for doing things like programming memory chips.- Rue didn't include reading data, which, technically should be possible.
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@RueNahcMohr I almost understand how this works! I don't quite see how the clock stays low with the data & latch changing, but that might be not understanding the full signal out of the 555.
Are the 22nFs just there for smoothing?
Anyway, I can see how cool this is, and as someone without any real education in electronics, I'm impressed by the clever simplicity.@sashabilton The 555 just inverts the serial data (side effect) and makes sure the voltages go from 0 to 5 (many of the serial converters output a high of only 3V) The RC magic distinguishes all the times into pulses. The magic is putting software on the sending side that "remodulates" the data
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