Project for pwm - how to combine tgt with ADC and PWM

[jason1987]

pwm help

anyone help mi for pwm... urgent. thank

 

[hameeds01]

Re: project for pwm help

u r not clear what u want ??

https://www.8051projects.net/pulse-width-modulation/introduction.php

 

[imported_jravi]

Re: project for pwm help

refer 1000projects.com

 

[aProgrammer]

project for pwm help

https://en.wikipedia.org/wiki/Pulse-width_modulation

 

[blueroomelectronics]

project for pwm help

Why is it Urgent?

 

[jason1987]

Re: project for pwm help

i am clear what i wan but i dunno how to combine tgt with ADC n PWM. help

 

[srikanthsamaga]

Re: project for pwm help

**broken link removed**

 

[jason1987]

Re: project for pwm help

how abt the current drive? hw to connect.. i have done everyting only current drive? help

 

[srikanthsamaga]

Re: project for pwm help

I didnt understand your problem...:?:

 

[jason1987]

Re: project for pwm help

do u noe current driver is what? i have done ADC and PWM.. the problem is tat. how to change the LED? because i need to use a super bright LED instead of a normal LED>> how to change?

 

[srikanthsamaga]

Re: project for pwm help

Use a transistor at the output thats all.

 

[jason1987]

Re: project for pwm help

i know.. but i have a transistor using 3094 and i put some resistor beside them scare LED bomb. but the problem is that.. how i control the LED using a switch.. i have done my another led using switch but how i connect to super bright LED? also using the same tatic..just tat using a super bright LED.

 

[srikanthsamaga]

Re: project for pwm help

The answer is the same...
Get details about your LED, i.e. its current rating
And choose a transistor which can handle that current (Also add a limiting resistor).
Now connect the Base of that transistor to the PWM pin, and I think u know the connection for transistor as a switch.

 

[manpriya]

Re: project for pwm help

can u post your code in C. I'm working on the same. its urgent please help.

 

[srikanthsamaga]

Re: project for pwm help

**broken link removed**

In the above site, I have written code in asm..
The concept is simple, so you can adapt the same program in c easily..

 

[jason1987]

Re: project for pwm help

i noe.. the problem now i need to do hardware part first... my board voltage is only 3.3V how to supply the super bright LED?

 

[Kurenai_ryu]

project for pwm help

dude! how much dos the so-called" superbright led consumes? how much current, how much is the A-K drop voltage???? dude I think you know nothing on the subject...

 

[jason1987]

Re: project for pwm help

what is DMX512?
my question is this


the project is about remotely control dimming using industry protocol such as DMX512. any soution?

 

[millwood]

project for pwm help

this conversation is getting interesting now,

 

[blueroomelectronics]

project for pwm help

It's always been interesting.