Dimming a LED light?

burrettmd Всі повідомлення цього користувача #238044 Gang, I would like to dim an LED which I am using as a cab light ( fx3 ) in JMRI. F7 does dim the lights now, but it dims all the lights and not in nearly enough for this cab light. Can I do that? Or do I need to add a bigger resistor For that cab light LED? The decoder for this project is a TSU 2200, I have the light type as an LED and the effect selection as a dimmable headlight. I use NCE for my DCC system.Thanks, Bruce in Mt. Airy, Maryland.
Ken Heywood Всі повідомлення цього користувача #238049 Add a resistor (you'll have to experiment) or paint the LED lens with black acrylic paint. You'll be surprised that you won't blot out all the light from the LED with paint. Again, experiment. -- Ken NYNH&H, Old Colony Division, Cape Cod Branch (1949-1959) Loconet * JMRI 5.11.1 * OSX,Win10,Ubuntu Blog: Cape Cod Railroad (HO) – Newbie of an Oldie Youtube: Ken's Channel
Mick Moignard Всі повідомлення цього користувача #238052 Try setting the type of that light to Brightness 1 and then use the slider lower down the pane to reduce its brightness. Mick ______________________________________ Mick Moignard mick@... p:+44 7774 652504 The week may start M, T, but it always ends WTF!
James Little Всі повідомлення цього користувача #238058 LEDs dim by reducing the current as opposed to bulbs which dim by lowering the voltage. Usually you need a much higher resistance for LEDs than you would for bulbs. LEDs have become more light efficient in the last few years and thus require even higher resistances. My 'Standard' settings are for 10k for headlights and 22k resistors for any numberboards or classification lights. Jim Little, MMR переключити цитоване повідомлення Показати цитований текст On Sat, Dec 28, 2024 at 2:48 PM Mick Moignard via groups.io <mick=mickmoignard.com@groups.io> wrote: Try setting the type of that light to Brightness 1 and then use the slider lower down the pane to reduce its brightness. Mick ______________________________________ Mick Moignard mick@... p:+44 7774 652504 The week may start M, T, but it always ends WTF!
Dana Всі повідомлення цього користувача #238061 The best wayt to dim LEDs is with a PWM de3vicve from Amazon. Amazon.com: Gebildet 3pcs Mini DC Motor PWM Speed Controller, DC 5V-35V 5A Speed Adjustable Switch Module, 6V 12V 24V Variable Voltage Regulator Dimmer Governor Switching Build with LED Indicator : Industrial & Scientific 3 fdoe .95. Yews it is more expensive than a resistor, but it ensures the color ands full range of brightness., Dana Zimmerli Z System Designs переключити цитоване повідомлення Показати цитований текст From:* jmriusers@groups.io <jmriusers@groups.io> On Behalf Of James Little via groups.io Sent: Saturday, December 28, 2024 3:20 PM To: jmriusers@groups.io Subject: Re: [jmriusers] Dimming a LED light? LEDs dim by reducing the current as opposed to bulbs which dim by lowering the voltage. Usually you need a much higher resistance for LEDs than you would for bulbs. LEDs have become more light efficient in the last few years and thus require even higher resistances. My 'Standard' settings are for 10k for headlights and 22k resistors for any numberboards or classification lights. Jim Little, MMR On Sat, Dec 28, 2024 at 2:48 PM Mick Moignard via groups.io <mick=mickmoignard.com@groups.io> wrote: Try setting the type of that light to Brightness 1 and then use the slider lower down the pane to reduce its brightness. Mick ______________________________________ Mick Moignard mick@... p:+44 7774 652504 The week may start M, T, but it always ends WTF!
David Klemm Всі повідомлення цього користувача #238079 Mick, My club got a DCS240 not long after it came out to replace an aging DC210. At the time we couldn’t get the PC to DCS240 via the USB to stay up, it was very unstable, So we tried the USB Locobuffer and found that connection was stable. What we had issues with is we could not read Quads and our signaling did not work with the quads, Would you happen to use quads? I have updated the DCS240 with the latest firmware and we may give the USB Locobuffer another shot. David Klemm переключити цитоване повідомлення Показати цитований текст On Dec 28, 2024, at 16:48, Mick Moignard <mick@...> wrote: Try setting the type of that light to Brightness 1 and then use the slider lower down the pane to reduce its brightness. Mick ______________________________________ Mick Moignard mick@... p:+44 7774 652504 The week may start M, T, but it always ends WTF!
billybob experimenter Всі повідомлення цього користувача #238086 On 12/29/2024 11:30 AM, David Klemm via groups.io wrote: What we had issues with is we could not read Quads and our signaling did not work with the quads Is that problems with Tam Valley Depot "QUAD-PIC" devices connected to the DCC track signal but not connected to LocoNet? Or Tam Valley "QUADLN" and/or N3IX "QUADLN_S" devices that are connected to LocoNet? If you have problems with QUAD-PIC devices, I would _guess_ that you have encountered problems with the DCC track signal with some types of command stations and/or boosters where "too much track" is connected, and those devices which are furthest from the command station/booster "see" a garbled DCC track Signal. If that is the problem, the "solution" cab be: - place the command station/booster adjacent to the track, rather than remotely; and/or - "reduce the bus length" by splitting the bus into several smaller busses and adding more boosters; and/or - adding suitable "snubbers" to the ends of the power districts. If you have problems with the LocoNet-connected "Quad" devices, it would seem likely to me to be a problem of LocoNet wiring. Specifically, the use of "Phone-style" cables and/or connectors on LocoNet. That is, by far, the most likely reason for a set of LocoNet devices being unable to talk to other LocoNet devices...
burrettmd Всі повідомлення цього користувача #238098 Back to my original question… i’ve tried to do has Mick as suggested but under FX three light type I only have choice of LED or incandescent lamp. Is definitely an LED that I am using. I do see a slider bar, lower on the pane, but that does not seem to give me control of just the LED cab light. Am I missing some other step? Thanks, Bruce and Mt. Airy, Maryland. переключити цитоване повідомлення Показати цитований текст On Dec 29, 2024, at 12:38 PM, billybob experimenter via groups.io <jawhugrps@...> wrote: On 12/29/2024 11:30 AM, David Klemm via groups.io wrote: What we had issues with is we could not read Quads and our signaling did not work with the quads Is that problems with Tam Valley Depot "QUAD-PIC" devices connected to the DCC track signal but not connected to LocoNet? Or Tam Valley "QUADLN" and/or N3IX "QUADLN_S" devices that are connected to LocoNet? If you have problems with QUAD-PIC devices, I would _guess_ that you have encountered problems with the DCC track signal with some types of command stations and/or boosters where "too much track" is connected, and those devices which are furthest from the command station/booster "see" a garbled DCC track Signal. If that is the problem, the "solution" cab be: - place the command station/booster adjacent to the track, rather than remotely; and/or - "reduce the bus length" by splitting the bus into several smaller busses and adding more boosters; and/or - adding suitable "snubbers" to the ends of the power districts. If you have problems with the LocoNet-connected "Quad" devices, it would seem likely to me to be a problem of LocoNet wiring. Specifically, the use of "Phone-style" cables and/or connectors on LocoNet. That is, by far, the most likely reason for a set of LocoNet devices being unable to talk to other LocoNet devices...
burrettmd Всі повідомлення цього користувача #238099 Lightbulb just went off. I was just not scrolling far enough down on the list of choices. Got it working the way I was hoping! thanks a lot. Bruce in Mount Airy, Maryland. переключити цитоване повідомлення Показати цитований текст On Dec 29, 2024, at 5:07 PM, burrettmd via groups.io <burrett@...> wrote: Back to my original question… i’ve tried to do has Mick as suggested but under FX three light type I only have choice of LED or incandescent lamp. Is definitely an LED that I am using. I do see a slider bar, lower on the pane, but that does not seem to give me control of just the LED cab light. Am I missing some other step? Thanks, Bruce and Mt. Airy, Maryland. On Dec 29, 2024, at 12:38 PM, billybob experimenter via groups.io <jawhugrps@...> wrote: On 12/29/2024 11:30 AM, David Klemm via groups.io wrote: What we had issues with is we could not read Quads and our signaling did not work with the quads Is that problems with Tam Valley Depot "QUAD-PIC" devices connected to the DCC track signal but not connected to LocoNet? Or Tam Valley "QUADLN" and/or N3IX "QUADLN_S" devices that are connected to LocoNet? If you have problems with QUAD-PIC devices, I would _guess_ that you have encountered problems with the DCC track signal with some types of command stations and/or boosters where "too much track" is connected, and those devices which are furthest from the command station/booster "see" a garbled DCC track Signal. If that is the problem, the "solution" cab be: - place the command station/booster adjacent to the track, rather than remotely; and/or - "reduce the bus length" by splitting the bus into several smaller busses and adding more boosters; and/or - adding suitable "snubbers" to the ends of the power districts. If you have problems with the LocoNet-connected "Quad" devices, it would seem likely to me to be a problem of LocoNet wiring. Specifically, the use of "Phone-style" cables and/or connectors on LocoNet. That is, by far, the most likely reason for a set of LocoNet devices being unable to talk to other LocoNet devices...
Mick Moignard Всі повідомлення цього користувача #238100 Bruce You did say you’re using a Tsunami-2, right? Different decoders have different capabilities…. Mick ______________________________________ Mick Moignard mick@... p:+44 7774 652504 The week may start M, T, but it always ends WTF!
Mick Moignard Всі повідомлення цього користувача #238104 For a TSU-2 decoder, you need to go to the Lights pane, and look at the selection for the output, Headlight, Backup light of one of the FXx selections, whichever one you have the cab light on. Select the effect as On/Off Brightness 1. Then set the brightness using Brightness 1 Level slider down towards the foot of the page, The Brightness effect selections are dimmed by the F7 dimmer. You can then use the function map page to make the light come on when the loco stops. For that FXx selection, check the boxes for Standing only. Then the light should be on while stationary and off when moving. The F-Key will override that. I STRONGLY recommend that you do all of this setup in Ops mode, then you can see the overall effect step by step. Mick ______________________________________________________________________ Mick Moignard Specialising in DCC Sound p: +44 7774 652504 e: mick@... skype: mickmoignard The week may start M,T but it always ends up WTF! From: Mick Moignard/A55DA5/Prominic To: jmriusers@groups.io Date: 29/12/2024 22:41 Subject: Re: Dimming a LED light? Bruce You did say you’re using a Tsunami-2, right? Different decoders have different capabilities…. Mick ______________________________________ Mick Moignard mick@... p:+44 7774 652504 The week may start M, T, but it always ends WTF!

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