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Post by onequiknova on Mar 11, 2023 10:37:56 GMT -8
Hi guys,
I repurposed an old Tsunami 1 NT 645 decoder in my son's Athearn SW1500. (Close enough for now) There are no markings on the decoder, but I believe it to be a GN1000. It has an SMD LED roof top beacon run off of function 6, but it is too bright. I've been through the manual and can't find a way to dim the LED with programming. Is this possible on the older Tsunami, or do I need to do it with resistors? If I do need to switch resistors, any recommendations? I believe I have a 1k in it now.
Thanks.
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Post by nebrzephyr on Mar 12, 2023 8:10:42 GMT -8
I can't speak to your exact situation but I have found on non-sound decoders (various makes) that yes you do need to dim the beacon. I have been using 0402 LED in the beacons and have used either a 3.3K or 4.3K resistor.
Bob
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Post by onequiknova on Mar 12, 2023 9:13:42 GMT -8
I can't speak to your exact situation but I have found on non-sound decoders (various makes) that yes you do need to dim the beacon. I have been using 0402 LED in the beacons and have used either a 3.3K or 4.3K resistor. Bob Thanks Bob. I know it's possible to change the lighting voltage on the tsunami 2, but I can't figure out how on this old decoder. I'll pick up some of those resistors if I can't figure it out. |
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Post by rockisland652 on Mar 12, 2023 12:57:38 GMT -8
The Tsu-1 has no provision for dimming lights. Go with the resistors.
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Post by bnsf971 on Mar 18, 2023 1:17:09 GMT -8
Tsunami does have dimming functions for the headlights. Depending on how important Rule 17 is to you, the lead for the headlight could be used for the beacon.
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