I've got a MIDIsense board and a pair of SHARP GP2D12 IR Distance sensors straight from the recommended list at http://www.ladyada.net/make/midisense/d ... nsors.html
I'm hoping to enhance the visual effect by adding some cheap red lasers (or maybe some blue LEDs?) along the line where the IR would travel.. Would this mess up the sensor's readings, or would it make no difference at all?
Thanks,
MIDIsense + IR prox sensor + laser?
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- rafaelmizrahi
- Posts: 23
- Joined: Sat May 05, 2007 3:30 pm
how did you hook the proximity into MIDISense
EndIf,
how did you hook the proximity into MIDISense
I see at http://squidb0i.livejournal.com/144806.html?view=772774
that you managed to use Proximity Sensors with MIDISense resistance board.
http://www.acroname.com/robotics/parts/R48-IR12.html
I saw that Limor says you have to modify the MIDISense board and bypass the opamp.
how did you do that?
thanks.
how did you hook the proximity into MIDISense
I see at http://squidb0i.livejournal.com/144806.html?view=772774
that you managed to use Proximity Sensors with MIDISense resistance board.
http://www.acroname.com/robotics/parts/R48-IR12.html
I saw that Limor says you have to modify the MIDISense board and bypass the opamp.
how did you do that?
thanks.
- rafaelmizrahi
- Posts: 23
- Joined: Sat May 05, 2007 3:30 pm
here is what I see:
It is not clear enough which sensors are supported by which of the boards (Resistive and A/D I/O boards)
I have a sharp distance sensor, so, I will try this too and let you know.
http://www.ladyada.net/make/midisense/d ... nsors.htmlThis sensor must be used with the Analog/Digital I/O board plugged into one of the Analog ports configured as an Analog Input.
http://www.ladyada.net/forums/viewtopic ... =proximityIs it possible to connect a control voltage from an IR proximity sensor to the Vout of the resistive board?
It is not clear enough which sensors are supported by which of the boards (Resistive and A/D I/O boards)
I have a sharp distance sensor, so, I will try this too and let you know.
-
- Posts: 22
- Joined: Mon Oct 29, 2007 4:45 pm
So, how do we go about removing the op amp, is it just a matter of connecting the v-out on the distance sensor to the correct pin on the pic chip?
I had a good look at how to do this, it seems the pic chip responds to a voltage input, i wasnt sure which pin is the voltage in or how removing the op amp would affect the circuit.
maybe Ladyada or some other helpful soul could point us in the right direction.
I had a good look at how to do this, it seems the pic chip responds to a voltage input, i wasnt sure which pin is the voltage in or how removing the op amp would affect the circuit.
maybe Ladyada or some other helpful soul could point us in the right direction.
-
- Posts: 22
- Joined: Mon Oct 29, 2007 4:45 pm
- rafaelmizrahi
- Posts: 23
- Joined: Sat May 05, 2007 3:30 pm
- rafaelmizrahi
- Posts: 23
- Joined: Sat May 05, 2007 3:30 pm
I think that the problem is that the ATMega8 AREF pin uses 5v as a reference voltage, and not 3.3V as the IR distance sensor VOut is giving.
check out this project which uses the same micro controller MIDISense has with an IR Distance sensor.
http://www.micahcarrick.com/05-11-2006/ ... ensor.html
The problem can be solved in 2 ways:
1. have MIDISense ATMega8 AREF pin uses 3.3V reference voltage using a LM317Z variable voltage regulator.
2. increase the voltage the IR Sensor supplies to the ATMega8 PC0-PC5 pins 3v from to 5v.
I still don't know which approach is better and how will it affect on the whole MIDISense circuit.
check out this project which uses the same micro controller MIDISense has with an IR Distance sensor.
http://www.micahcarrick.com/05-11-2006/ ... ensor.html
The problem can be solved in 2 ways:
1. have MIDISense ATMega8 AREF pin uses 3.3V reference voltage using a LM317Z variable voltage regulator.
2. increase the voltage the IR Sensor supplies to the ATMega8 PC0-PC5 pins 3v from to 5v.
I still don't know which approach is better and how will it affect on the whole MIDISense circuit.
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- Posts: 76
- Joined: Sun Feb 04, 2007 9:47 pm
i also purchased a sharp GPD (short range version, 120) and i BADLY NEED to use it with midisense.
i'm dying to make this work
ladyada, please, please shed words on this.
how can i do either of these?The problem can be solved in 2 ways:
1. have MIDISense ATMega8 AREF pin uses 3.3V reference voltage using a LM317Z variable voltage regulator.
2. increase the voltage the IR Sensor supplies to the ATMega8 PC0-PC5 pins 3v from to 5v.
I still don't know which approach is better and how will it affect on the whole MIDISense circuit.
i'm dying to make this work
ladyada, please, please shed words on this.
Please be positive and constructive with your questions and comments.