[DIYbio] Re: Making my own incubator

Have you thought about using a styrofoam cooler as the chamber instead
of a cup?

On Feb 4, 4:12 am, Mega <masterstorm...@gmail.com> wrote:
> Thank you.... I have already written the code (I modified the code I
> used for measuring the temperature many months ago)
>
> I could post some pictures here if there is an online storage where to
> put them in...
>
> Pulse-with modulation would work well with transistors/MOSFETs  but as
> I have only electronical transistors (maybe can't stand the amperage)
> at home I'm using a relais.
>
> Yeah and the temperature I'm measuring is displayed by two LEDs :
> First LED shows 'tens', second one 'ones'. So if it was 34 °C (Komma
> is not displayed) it would be -> 3times first led blinking , 4 times
> second led.
> (To avoid using LCD which would mean you'd need a bigger chip like
> ATmega8)
>
> On 3 Feb., 23:40, Cathal Garvey <cathalgar...@gmail.com> wrote:
>
>
>
>
>
>
>
> > I love this idea! It's really minimalist and simple. A cool hack. :)
>
> > I have code for a water bath that uses an arduino and an LM35; you might
> > be able to re-use some of that code if you like?
>
> > In particular, there's an LM35 reading function and some basic
> > temperature controls, and some failsafe code built in.
>
> > It's on github here:https://github.com/cathalgarvey/KettleKontroller
>
> > And it's attached. Currently set to 55C for the G.stearothermophilus I'm
> > trying to culture, you'll have to change that if you want to use it as-is.
>
> > Also if you're using it as-is, you'll need to play with "HeatPulseDur"
> > and "RestPulseDur": they cover how long to turn the heater coil on and
> > off during heating. Kind of like coarse pulse-width-modulation; you can
> > use different settings to get different rates of heating out of any
> > given setup.
>
> > Right now, it's pin A0 for LM35 input (with the LM35 on +5V), and heater
> > control is on pin 13 (In my case, controlling a relay which turns a
> > kettle on and off)
>
> > On 03/02/12 19:09, Mega wrote:
>
> > > Hey,
>
> > > As I need someting to heat my e.coli cells above 30 degrees Celsius to
> > > make them grow exponentially,   I'm building my own heater.
>
> > > It's made of a very big christmas coffe cup  (some 15cm in diameter),
> > > controlled by an attiny 13 and lm335 (temperature sensor).
>
> > > It's heated by 6 Ohm resisstances (3 parallel -> 3 of parallels in
> > > serial)
>
> > > It's powered 3,7Volts, 900 mA. Resistances heat up to ~ 64 �C. When
> > > sensor reaches 35�C it will stop heating.
>
> > --www.indiebiotech.com
> > twitter.com/onetruecathal
> > joindiaspora.com/u/cathalgarvey
> > PGP Public Key:http://bit.ly/CathalGKey
>
> >  BathProto3
> > 6KAnzeigenHerunterladen

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