IR for distance sensor

[Guest mferolla]

i found a good Infra Red sensor to add to the MidiBox64 in the place of a pot or fader, this sensor is greate because you can do the same of a fader but in the air, like moving the hand, the page of thssi sensor is this one

http://www.acroname.com/robotics/parts/R48-IR12.html

But the problem I have is that the output of this IR is from 0 to 3 V, and what I need If Im not wrong is beetwen 0 and 5!

If someone knows how to solve this , would be greate!!

Thank you very to everybody

Mariano Ferolla

[Ian_Hurlock]

So why not port the whole lot out thru infra red.

Send the midi data to IR receiver at the pc.

Ian

[gillesdeshays]

But the problem I have is that the output of this IR is from 0 to 3 V

But normally the output voltage is : -0.3 to VCC+0.3

You power your IR with 5 v ?

Gilles

[Guest mferolla]

YES I power it with 5V but the output as you said is like that what can I do to have the output from 0 to 5 V! becouse that te way that this will work in my midimox64.. :-[

Thakxs

[jerash]

for sure you need to add some electronics to transform these -0.3/+0.3V into 0/5V  :-/

but maybe not necessary to reach the 5v, and you can adjust the "pot" range in the software (i think we speak about scaling  here). Not tested as my midibox is not finished, but i think it's the way it works.

:P

RAF

[gillesdeshays]

If Vcc=5 V and Vout=Vcc+0.3

so the output voltage range is 0.3V to 5.3 V ...

Do you measure 0 to 3 V at the output ?

Gilles

[Guest mferolla]

I didn't measure ir yet becous eI didn't by the IR, Im traying to fiend out everything beforeI buy it! but if it is how you say It should be Ok, no?

Thanks for your help

Mariano

[gillesdeshays]

As far are my mathematics lesson at school ...

IF Vcc=5v

and voltage output range Vo=-0.3V at 10 cm

and voltage output range Vo=Vcc+0.3V at 80 cm

The IR detector feed with 5V will out -0.3V (closest detection) to 5.3V (far detection)

So it must work ... protection the chip pinput with a 5V zener diode may be ...

Gilles

[Guest mferolla]

Thank you very ! ass son as i try that i will tell oyu what had happened!!

Thanks!!

mariano