Hi,
I am testing a SERVO carry IR sensor for scanner work well.
I mounted a IR receiver on the SERVO to receive IR remote signal, but got lot of noise, how to do with that?
The SERVO used another 5V without a driver module but GND to GND of Arduino's, SERVO signal line controlled by Arduino pin7.
Thanks
Adam

IR receiver got noise:



IR sensor works:

 

This is a fairly common problem and can be caused by several things:
Power supplies not adequate for driving a R/C servo, The servo can draw up to an amp when it is activated.
The circuit common of the servo and the circuit common of the arduino connected incorrectly. They should only be connected together at the inputs of the power supplies.
Long unshielded wires on input circuits. If they are not shielded or twisted-pairs, they can pick up radiated interference from the servo leads.
What are you using for power supplies?
Can you post a picture of your layout please?
Any extra information will help us to diagnose the cause of your problem.

It will work if you do it correctly. I have successfully made some quite complicated devices that use R/C servos and are controlled by an IR remote.

 

Some of the TSOP style iR sensors have an internal or external shield to reduce interference if it the sensor itself that is picking it up.

For instance:

TSOP 4830

FEATURES
• Low supply current
• Photo detector and preamplifier in one package
• Internal filter for PCM frequency
• Improved shielding against EMI
• Supply voltage: 2.5 V to 5.5 V
• Improved immunity against ambient light
• Insensitive to supply voltage ripple and noise

 

Some of the TSOP style iR sensors have an internal or external shield to reduce interference if it the sensor itself that is picking it up.

For instance:

TSOP 4830

FEATURES
• Low supply current
• Photo detector and preamplifier in one package
• Internal filter for PCM frequency
• Improved shielding against EMI
• Supply voltage: 2.5 V to 5.5 V
• Improved immunity against ambient light
• Insensitive to supply voltage ripple and noise

Thank you AlbertHall.

 

This is a fairly common problem and can be caused by several things:
Power supplies not adequate for driving a R/C servo, The servo can draw up to an amp when it is activated.
The circuit common of the servo and the circuit common of the arduino connected incorrectly. They should only be connected together at the inputs of the power supplies.
Long unshielded wires on input circuits. If they are not shielded or twisted-pairs, they can pick up radiated interference from the servo leads.
What are you using for power supplies?
Can you post a picture of your layout please?
Any extra information will help us to diagnose the cause of your problem.

It will work if you do it correctly. I have successfully made some quite complicated devices that use R/C servos and are controlled by an IR remote.

Thank you KeithWalker.
I'll make a circuit and post here.
It is small car which used IR sensor to detect obstacle like lot of online diys.
I changed the distance sensor and replaced on a IR receiver to receive a remote, what I like to do is let the car turns left or right controlled by IR remote.
diagram for IR receiver (the car motors not connected yet):
there are two power supplies, one for SERVO+IR, the Arduino used usb from computer.

 

There is no shielding at all on the parts shown in the photo in post #1. The RC servo does have a DC motor and a pwm control signal, and no visible shielding.
So of course there will be a noise picked up on the high impedance low amplitude, unshielded wiring.

 

There is no shielding at all on the parts shown in the photo in post #1. The RC servo does have a DC motor and a pwm control signal, and no visible shielding.
So of course there will be a noise picked up on the high impedance low amplitude, unshielded wiring.

Thank you MisterBill2.
I do have a square aluminum pipe and the IR receiver was put inside the pipe, maybe should use a plastic pipe?
BTW. the SERVO and the IR receiver used same power supply.