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    Capacitors and Leds

    Hi Tigermoth I'm assuming here, that the layout you want to run this on is NOT DCC? Are you making lighting for your stock, or direction lights for locos? regards, Steve
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    'headphone' mixer

    Hey all, I'm a newbie when it comes to audio electronics, and was wondering how I'd go about building a circuit for use as a headphone mixer. What I want to do is take the 3.5mm jack output from a number of various sources (generally PC audio out) and mix them into a single socket for...
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    Cree Led Conversion

    R2 and R3 look to be marked R680 to me...
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    Portable box

    For batteries of that size, You might want to look at Replacement UPS batteries, in the 7Ah range (Yuasa do them). The ones I deal with are used as Backup batteries and run at 12v.
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    Circuit for converting Fixed feed into single 'pulse'.

    Hi Ken, Thanks for the response! I've managed to look at the bell, and the strike only hits the bell on account of momentum, not the throw from the coil... so when the power is held on, the strike hits the bell, and then moves back a little... this prevents the ringing from being...
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    Controlling a motor from computer

    Hi, I'm fairly new here, so I apologise if I step on any toes... One way you can control a motor with a computer, would be to use a Raspberry Pi. (http://www.raspberrypi.org) It has pins on the GPIO (General Purpose IN/OUT) header that specifically cater for PWM (Pulse Width...
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    Circuit for converting Fixed feed into single 'pulse'.

    Morning all! I'm trying to take a fixed feed from a PtM button, and convert it into a single 'pulse' to work a single strike bell, (i.e a Morse bell). I'm building a project to restore a Ribbon Storage Train Describer to working use, which has a mechanical switch that locks into place, and...
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