[Swansea Hackspace] ok wont be in.

[Ceri Clatworthy]

PWM is very simple.
Connect O/P to transistor of FET an you are away. ..
On 17 Nov 2014 19:41, "Ian Bullfrog" <sevendev.tk at gmail.com> wrote:

> havent heard from the space, webcams down so not sure whats going on
> tonight, so shall give it a miss.
> was called Emyr to see if he was going... his brake lights have failed on
> car, so you may/may not see him too.
> if Dr Tim is there...say HI TIM... to him for me.
>
> will try again.
>
> ps.
> Got the sensor kit for 23 from banggood so djd gets his points or whatever
> and some other stuff and then used ALi express for a couple of other things.
> it took me about an hour to finalise my order on banggood. order
> interface/address very clunky. wouldnt give me a county, no drop down and
> wouldnt let me carry on with order until I selected a county from the drop
> down it wouldnt show me! aaargh.
> and each refresh meant typing it all in again. oh joy.
>
> but done now.
>
> Also.
> My cousin just asked me to make a light for his microscope with variable
> power with a super bright LED>
> the flowery shaped affair.
>
> easy I said! you can use an arduino to play with it and use pwm to
> er...umm switch something...erm.
>
> then I did some googling.
> not that straight forward.
>
> curses.
>
> any suggestions on where to start? Id like to play with the arduino and
> program it...because ive got one. but not sure what to drive LED with.
>
> and then maybe use a pic or something. Im open to ideas.
>
> oh and with that sensor kit.
> I noticed that some of the sensors, have a rectangular blue pot with a
> tiny 8 leg chip on them.
> any idea what that chip would be about and would it make the sensors
> voltage specific, ie, 3.3 as opposed to 5v , Pi /arduino etc?
>
> ok cheerio
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