Until I heal enough to do anything,electronics is a exercise in speculation for me. I do like designing so I am debating what to work on, for example a Class D a from 555s. I am open to suggestions.I can draw layouts andschematics very well.

Anybody? .

 

There has been a thing that I've had little to no luck with and that is making a 16 step sequencer using 2*CD4017.

I know it must be something simple however the solution is lost on me.

I know it ain't exactly a 555 problem but I'm sure that you know how to do it. Or at least have an idea.

 

Have you read my..LEDs, 555s, Flashers, and Light Chasers,

Chpter 11 covers that Ithink.
Chapter 11..Making Patterns.
25 LED sequencer.zip

@Sinus23
Includes aPCB layou, Output count easilymodified.

 

My blog
Wendy's Index

Cr1 CR2 and R3 are a diode AND gate.

 

Until I heal enough...

Glad to hear you put it that way, instead of "if I ever heal" or some other pessimistic phrasing.

 

It will happen. The phrase hurry up and wait seems to apply.The paralyzed parts move and react. My brain just has to learn new neural paths

 

I don't know if it's just me, but I perceive an improvement in the quality of your post and assume that it's indicative of your progress. Good to have you back.

 

I am mentally more actve which is why I'm looking for thing to do. I hate to admit it. but I have lost IQ points. I try to keep active when I can.I do love electronics, while it is a pain I like to write too.

 

So it is funny but I have taken Class D amp about as far as I can go My memory has struck again,Still open for ideas please

 

Hello,

Class D is basicaly a PWM like signal.
You could use your PWM circuit with the 555 and comparator.
Put the sawtooth on one side of the comparator.
The other side of the comparator about 1/2 Vcc and couple the AC sound in via a capacitor.
The AC sound may be max 1/3 Vcc as that are the switching points of the 555.

Bertus

 

I tend to publish everything as soon as I finish drawing it warts and all.I also love low parts count (I'm cheap that way) I could make protoboard layouts for my LED article.

 

The brain is like a muscle, the more you use it, the stronger it get. I'm happy to see you are more active.

Haven't you done everything that is worth doing with the 555?

Design a 555, with flip-flops and comparators...

 

What Ireally need to do is develop new coding skills

 

Coding skills for what platform? I can help with some BASIC or Arduino C coding.

Was this a skill that you need some remedial assistance with? Or were you an accomplished coder?

I have been coding for so long, I am confident in any environment. Also, I used to teach coding as well.

 

Back when PCs were new I learned BASIC ALONG W/ 6502and Z80 .Rusty doesn't even come close.Trying to pick up python at the moment. I started w/TRsS80and C64

 

I don't know if this might be of interest to you or not, but if you are interested in picking up coding skills and want to work on problems that are related to what you already know from electronics, you might try working through the Nand-to-Tetris project. I describe it in my blog.

https://forum.allaboutcircuits.com/blog/nand2tetris-overview.590/

 

Back when PCs were new I learned BASIC ALONG W/ 6502and Z80 .Rusty doesn't even come close.Trying to pick up python at the moment. I started w/TRsS80and C64

I'm working on learning Python too.

Amazingly simple - I love no wait to compile. Just save and run.

I'm working on recompiling some documents - combination of plain text, xml and obsolete web pages to update certain pieces of data.

Also, screening the documents for presence of some key words.

After working with PIC, it is fascinating to have entire documents with 100MB of data loaded as a single string variable. Also, how fast an old CPU with Linux can run through them.

I was going to send them all to Contractor but with the help of Python and some evening reading - it is all done and I have high confidence in the quality.

 

Yeah, I was going to suggest the same thing... if your motor skills are still wanting in the way of physically being able to put something together, right now's the perfect time to learn to code.