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Re: Hmevision ir transmitter
- To: ukha_d@xxxxxxx
- Subject: Re: Hmevision ir transmitter
- From: "andy_powell_is" <ukha@xxxxxxx>
- Date: Thu, 30 May 2002 23:11:38 -0000
- Mailing-list: list ukha_d@xxxxxxx; contact
ukha_d-owner@xxxxxxx
- Reply-to: ukha_d@xxxxxxx
Ok,
I've linked the two grounds together and set up as per your last
message.. still no joy.. :(
sob, sob,
Andy
--- In ukha_d@y..., "Ian Davidson" <ian@g...> wrote:
> Andy
>
> Yes you do need both grounds connected together for reference.
>
> Then try again as my previous message, if still no go then will
will work
> through the circuit.
>
> Ian D
>
> ----- Original Message -----
> From: "andy_powell_is" <ukha@b...>
> To: <ukha_d@y...>
> Sent: Thursday, May 30, 2002 11:40 PM
> Subject: [ukha_d] Re: Hmevision ir transmitter
>
>
> > --- In ukha_d@y..., "Ian B" <Ian@M...> wrote:
> > > Don't forget to common all the grounds.
> > >
> >
> > Ian,
> >
> > I'm using 2 separate breadboards with 2 separate PSUs (Homevision
is
> > not involved at the mo, I'm just trying to get the circuit right
so
> > as not to blow it up) Do I still need to make a link between the
two
> > grounds?
> >
> > I'm not sure I understand the rest of your message...
> >
> > please engage idiot proof mode :P
> >
> > Andy
> >
> > > I would suggest you do this in stages and the first one is
to
> > connect the
> > > 2N2222 base to the HV +ve IR output via a resistor,
something
like
> > 1k should
> > > do it. Then connect the collector to +ve via a resistor and
the
IR
> > LED, 100
> > > ohms should be good. Connect the emitter to the ground of
the
power
> > supply.
> > > With the HV ground and power supply ground connected try a
test
IR
> > burst. If
> > > the equipment does not respond then change the LED for a
visible
> > one and see
> > > if it flashes dimly?
> > >
> > > Let me know
> > >
> > > Ian
> > >
> > > >-----Original Message-----
> > > >From: andy_powell_is [mailto:ukha@b...]
> > > >Sent: 30 May 2002 19:59
> > > >To: ukha_d@xxxxxxx
> > > >Subject: [ukha_d] Re: Hmevision ir transmitter
> > > >
> > > >
> > > >
> > > >Ian,
> > > >
> > > >I'm actually stubling at the first hurdle here...
> > > >
> > > >I have :
> > > >
> > > >One one breadboard with a 5v supply a BC182, C is
connected to
+5v
> > > >via a resistor, B is connected to Ground (via a push
switch)
and E
> > is
> > > >connected to the B of a 2N2222 on another breadboard
with 5v
supply
> > > >(spearate from the first one). The C of the 2N2222 is
connected to
> > 2
> > > >LED's in series with a 220ohm resistor and the E is
connected
to
> > the
> > > >ground of the supply on this board.
> > > >
> > > >I expected the LED's to light up - guess what? It does
nothing :(
> > > >
> > > >Any ideas???
> > > >
> > > >I thought it was the circuit I'd drawn (uploaded to the
files
area)
> > > >before...
> > > >
> > > >Andy :(
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >--- In ukha_d@y..., "Ian B" <Ian@M...>
wrote:
> > > >>
> > > >> > I noticed that you said you were using 3 port
pins, which
> > sounds
> > > >> > better than using 8...
> > > >>
> > > >> Andy
> > > >>
> > > >> I think Frank has built this round a 3 to 8 decoder
which
means
> > > >only one
> > > >> zone could be active at any on time. Using all 8
pins of
port A
> > > >gives you
> > > >> any combination you want simultaneously.
> > > >>
> > > >> Ian B
> > > >
> > > >
> > > >
> > > >For more information: http://www.automatedhome.co.uk
> > > >Post message: ukha_d@xxxxxxx
> > > >Subscribe: ukha_d-subscribe@xxxxxxx
> > > >Unsubscribe: ukha_d-unsubscribe@xxxxxxx
> > > >List owner: ukha_d-owner@xxxxxxx
> > > >
> > > >Your use of Yahoo! Groups is subject to
> > http://docs.yahoo.com/info/terms/
> > > >
> > > >
> > > >
> >
> >
> >
> > For more information: http://www.automatedhome.co.uk
> > Post message: ukha_d@xxxxxxx
> > Subscribe: ukha_d-subscribe@xxxxxxx
> > Unsubscribe: ukha_d-unsubscribe@xxxxxxx
> > List owner: ukha_d-owner@xxxxxxx
> >
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http://docs.yahoo.com/info/terms/
> >
> >
> >
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