Hi SparkyChem,
I wrote from the phone this morning so had to miss a few things out... I hate modern technology, especially Pepper the robot.
It's YOUR job to buy any parts you need and test the circuit or come up with another one and make it to test it, or commission someone to do ALL the work for you
. Surely you can show some interest and gumption and get hold of a breadboard and the basic components to experiment with at least the flasher one? Hobbies are about doing and learning, not expecting others to do, IMHO. What will you learn if someone else does everything else for you - how to ask someone to do what you should be trying to do??
By now, you should have pretty much memorised that datasheet from personal interest and a clear need to understand what you're hoping to do and come back with genuine questions, a set of calculations you have tried to do you may want checked for errors, ...and a proper schematic even perhaps.
I can't think of a better idea to make the exclamation mark version flash at a certain frequency than op ampos, comparators, inverters and an oscillator like the 555. That will be that I'm simplistic and can't see how to minimise the circuit, except for just doing the bar flasher one instead. The inverter IC after the comparator(s) is because the 555 reset pin needs to be low (0V) until the overvoltage event and then go high (V+) to make the 555 work.
The flasher version only needs a capacitor and resistor to do as it says under figure 20 on page 15 - flash when the RC junction is connected to any LED of your choice.
I have to say quite bluntly: One of my first circuits was an H-Bridge. I suffered a lot, A LOT, I knew next to nothing about electronics at all. I asked for almost no help, I suffered through rubbish schematics I found on the Internet, good schematics I didn't understand, typical beginner's mistakes of incorrectly wired BJTs and MOSFETs, burnt BC547s and BC557s, a burnt optocoupler, learning the wisdom of using fuses, what decoupling capacitors were, what a mechanical realy and a solid state relay could be used for, I did a lot of reading along the way to achieve MY goal, learn things, correct mistakes and beginner's naïve things like not knowing what pull-up and pull-down resistors were or were for. Felt like an idiot most of the time. It was fun and exciting, I applied myself to it and spent money and time to get the blasted thing to work. It was worth the effort. Around that time I made that LM3914 staple of the thermometer with 20 LEDs, it wasn't easy and took a few attempts to understand the schematic, online explanations and tiny bits of the datasheet - it was so exciting and fun to finally see the LEDs light up one by one on holding the LM35 temperature sensor on my breadboarded circuit. - What's your excuse precisely, fear, lack of funds or laziness or lack of real interest? I know it seems hard, but what isn't at first. We have nothing to fear but fear itself, and predatory governments and corporations, and maybe giant domestic cats the size of elephants if a mad scientist fond of felines abuses the Crispr thing...
And all that said, I will gladly help you, electronics is really hard at first and hideously confusing, Lord, do I know, but please make a bit more effort your side, it's your circuit, not mine.
Thanks for pointing out supply voltage. And on we continue. I'm hoping to continue with the simplistic LM3914 model tomorrow.
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