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I’m building a Bonsai node that connects a FLIR camera to a Harp Behavior Board so that when I send a stimulation input, the Harp board outputs it and the values are received on the PC. However, I keep getting an “Access to the connection port is denied” error. My Bonsai workflow looks like this—could you tell me how to fix it? |
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Answered by
AOONIH
Jan 14, 2026
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1 reply
Answer selected by
banchan86
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It looks like you have multiple Device nodes with the same COM PORT. You want 1 node per device. If you want to send inputs to the device from multiple streams, merge them upstream and have feed them to the single device node. I've put toether a toy workflow below