Bachmann Online Forum

Discussion Boards => Large => Topic started by: jsinger0420 on June 16, 2019, 10:22:21 AM

Title: blinking lights in bachmann two truck shay
Post by: jsinger0420 on June 16, 2019, 10:22:21 AM
Can someone identify the component that is used to provide the blinking lights in the ash pan and firebox of the Bachmann two truck shay?  I don't think its an LED but not it doesn't look like a regular bulb either so not sure what it is.  Also, how many volts does it take to make it blink?

thanks.
Title: Re: blinking lights in bachmann two truck shay
Post by: Joe Zullo on June 16, 2019, 10:57:17 AM
It is a two color LED.

https://www.google.com/search?q=two+color+LED&client=firefox-b-1-d&channel=tus&source=lnms&tbm=isch&sa=X&ved=0ahUKEwjm5MfXoe7iAhVIrVkKHeeHDncQ_AUIESgC&biw=1920&bih=933
Title: Re: blinking lights in bachmann two truck shay
Post by: Greg Elmassian on June 19, 2019, 11:49:29 AM
right, but the blinking is caused by a circuit, which is a modified  monostable multivibrator if I remember correctly.   ;D

The LED does not cause the blinking.
Title: Re: blinking lights in bachmann two truck shay
Post by: Joe Zullo on June 19, 2019, 12:36:24 PM
Quote from: Greg Elmassian on June 19, 2019, 11:49:29 AM
right, but the blinking is caused by a circuit, which is a modified  monostable multivibrator if I remember correctly.   ;D

The LED does not cause the blinking.

Oh sure. Everybody knows that!  ::)
Title: Re: blinking lights in bachmann two truck shay
Post by: Greg Elmassian on June 21, 2019, 04:41:21 PM
Just having fun Joe!   ;D
Title: Re: blinking lights in bachmann two truck shay
Post by: A Trainman on June 21, 2019, 08:54:25 PM
Greg said...
The LED does not cause the blinking.

Au contraire,
I purchased these and installed them in a modified Big Hauler. I put a 1k ohm resistor is series of each led and connected, through a switch, directly to 14.4v battery power.

https://www.ebay.com/itm/20-x-LED-5mm-Red-Candle-Flicker-Ultra-Bright-Flickering-LEDs-Light-Model-Prop/161110488690?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649

They look great!

Adam