[Swansea Hackspace] ok wont be in.

[Ceri Clatworthy]

You can use a FET almost a 100% replacement for On/Off transistor,

but It is a voltage to gate (base) not current,

so a higher gate resistor should be used (10 -100K instead of less than 5K),
and a gate to Gnd resistor of 50 - 500 K (ish)

Ceri

On Tue, Nov 18, 2014 at 10:03 AM, Ian Bullfrog <sevendev.tk at gmail.com>
wrote:

> On 18/11/2014 09:38, Justin Mitchell wrote:
>
>> On Tue, 2014-11-18 at 08:38 +0000, Graham Owens wrote:
>>
>>  Is there a reason to use an arduino in your led project, as you could
>>> probably achieve the same result with a 555 timer, or a small 8 pin
>>> device like a pic12f629 (just off the top of my head as i have one)
>>> they cost about 50p compared to the price of the arduino.
>>>
>> I have been using the PIC 12F1840 in recent years, same kind of price,
>> loads of features on it.  Theres tutorials on the website using it as
>> well as a bootloader for it.
>>
>> Use the pickit in the space (tool cupboard) to flash the bootloader onto
>> it, and then you can just connect the chip to a serial port (eg a usb
>> uart board) and reprogram it at will just like an arduino.
>>
>> If you are dead set on using an arduino then use a mini-pro board, you
>> can get them off places like aliexpress from £1.50 and up.  Same cpu as
>> the big arduino uno boards, but without the usb (you need to hook up
>> your own usb uart board to program it)
>>
>>
>>
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>> http://swansea.hackspace.org.uk/mailman/listinfo/hackspace
>>
> I just found a 16f84a Pic in a serial programmer here. may have a tinker
> later :) going to treat myself to a pony breakfast and then attempt some
> attic/garage/cellar sorting... to create space to make a space for
> eletronkicaling
>
> :)
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> http://swansea.hackspace.org.uk/mailman/listinfo/hackspace
>
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