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Electrode output end:

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EEG electrode:

enter image description here

I'm trying to connect the output of EEG electrodes to a breadboard as input. How do I connect the electrode to the breadboard? Usual jumper wires don't seem to fit and adding normal wires and soldering them isn't possible.

JRE
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Mayur
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1 Answers1

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The connector for EEG electrodes is the DIN 42802, which comes in 1.5 mm (DIN 42802-1) and 2.0 mm (DIN 42802-2) versions. Try to measure the inside diameter of your electrode connectors to sort this out.

The use of a female/socket rather than a plug on the electrode cable is for patient safety, to avoid the risk of a disconnected plug dragging across some metal object. The male/plug for DIN 42802 also is "touch proofed" with a hollow plastic shroud that the pin is recessed into.

The DIN 42802 connector itself isn't easily obtained, but you can buy "EEG Electrode Extension Wires" with a plug on one end and a socket on the other. Just cut off the socket/female end, strip and tin the wire end, and insert it in your breadboard. You could crimp on a Dupont connector instead if you have the contacts and tooling.

If instead you are using EKG electrodes (can't be absolutely sure from the photo) then you just need a standard banana plug which is 4 mm diameter and has springs that bulge outward slightly to make firm contact with the female/socket. In this case just obtain some banana jumper cables with a male on each end, cut them in half, strip and tin the cut ends, and insert into your breadboard.

Mark Leavitt
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  • Thanks for responding! If i can't get a proper extension wire, can I simply cut the electrode female end and solder a wire and extend it? Will this cause any issues or problems? (Like issues in signal transmission?) – Mayur Apr 18 '22 at 06:49
  • @Mayur Yes, you should be able to cut the female connector off the electrode wire and solder a wire to extend it -- unless it's "tinsel wire" (google that) which is challenging to solder. For your extension use a stranded, small diameter wire (22 ga down to 30 ga) so it's flexible. – Mark Leavitt Apr 18 '22 at 17:01