Homeduino bad reception only under raspberry

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Hi,
i am totaly confused…

have done everything in the homeduino howto thread from this forum.
Using Arduino with homeduino sketch, flashed under raspberry.

Plugin working well with Pimatic, sending and receiving works.

But my reception is very very bad. Only receives commands from ELRO AB440R remote if i hold it 10 cm away from the antenna (17,5 cm copper cable).
Very bad reception.

BUT if i put that Arduino on my Macbook and start the Arduino APP and then the Monitor i have a very good reception. 10 Meter or more.
Monitor Command to get RF signals “RF receive 0”.
I can see the little LED on that arduino blink if it gets a command from the remote.

Whats the clue?
Does the Raspberry deliver to less power? (i have a 2A power plug)

@Felix-Haverkamp try switching data and vcc pins around to see if it improves.

@Gleno0h dont think this help. at the macbook it works perfect, but on the raspberry it doesnt. just switching the usb cable from one device to another. nothing else changed.

@Felix-Haverkamp said in Homeduino bad reception only under raspberry:

Does the Raspberry deliver to less power? (i have a 2A power plug)

I think the Arduino gets enough power when it is connected to raspi but you may get a lot of noise on the power rail (possibly the power supply is guilty for that).

• Did you already take measures to de-noise the power rail? I found the following page useful: http://www.nemcon.nl/blog2/2015/07/aa (see RXB6 optimization).
• Do you have a shielded receiver?

@Felix-Haverkamp then, i would also say it is a noise issue and/or hardware issue. Post a pic of your receiver please