New, New TardisBuilders!
Started by 12thdoctor, May 15, 2009, 09:49 pm
Quote from: exleo on Sep 01, 2010, 09:26 amooooo even many a professional film or television prop has it's roots set deep inside a Poundland or 99p shop....all hail to the great bargain basement
Quote from: ivorydrops on Oct 23, 2010, 04:01 pmI have my 1/2 scale Police Box and my biggest issue for my personal completion ....... is that I want a flashing light. More specifically .... I "would like to have" a light that fades in and out at 1.5 second intervals......I have looked at diagrams for 555 Timer circuit, but I don't know enough about electronics to diagram the circuit, get the parts and solder what I need together ... Many diagrams I have seen deal with "blinking" which is not what I want. And most of these diagrams use LED. Unfortunately, LED most likely will not succeed at dimming unless you rapidly change the voltage up and down to give the illusion of dimming on and off.Aaannyway, anybody have any ideas how?
Quote from: Theta Sigma on Oct 24, 2010, 01:37 amJason, check out page 2 of my build thread called [ref topic=537]Kevin's 3/4 NST build[/ref] There you will find a circuit that does exactly what you want. It was designed to drive large LUXEON LEDs, but those can be omitted. There are small LEDs that are mounted on the circuit board, and those could easily be re-located inside the lamp of your 1/2 scale build.
Quote from: ivorydrops on Oct 24, 2010, 05:56 amI like the idea that I did everything very inexpensive on my box at that time. Coughing up over $60 for the light when the total supplies for my box was around $150 (minus certain hardware purchases) makes the circuit board hard to justify unless I use it for my future full-scale one.
Quote from: Theta Sigma on Oct 24, 2010, 01:44 pmJason, about half of that $60 is taken up by the large LUXEON LEDs. Using 4 of them for a 1/2 scale build would probably be too much. You could always reduce the number of LUXEON LEDs to 1, or substitute a cheaper, less powerful LED. If you do this, the resistance value of the 5W resistor would need to change to provide a greater voltage drop to protect the LEDs in a modifed circuit. If you want, I could modify the circuit design to use whatever LED you want to use. You'd just have to send me the specs on your chosen LED.
Quote from: wayne venomous on Oct 24, 2010, 05:55 pmI've done this with a car stereo! If I get a chance I'll upload a video of this later.Car stereos have the advantage that they have four channels so you can have the sound too. Also you can adjust the fade and balance so you can "fine tune" the lights and sound accordingly.
Quote from: galacticprobe on Oct 24, 2010, 06:59 pmJust curious because so many people are concerned with having the light flash in sync with the sound, but weren't there several stories, especially in the Classic episodes, where the TARDIS light flashed either slower, or in more cases faster than the sound?
Quote from: ivorydrops on Oct 24, 2010, 06:26 pmAnyway, here are other choices I found, but personally I am not partial to these specifically if you happen to notice a better choice.5mm High-Brightness White LED ($2 at Radio Shack)# High visibility, 5mm Round T-1 3/4# Intensity 7000mcd (typical);viewing angle 30°# FW current 25mA; FW supply 3.3 (typical), 3.6V (maximum)# RoHS compliantOR5mm White LED ($5 at Radio Shack)# Typical Voltage: 3.2V# Typical MCD: 1100# 20mA (max)# Viewing angle: 50°
Quote from: ivorydrops on Oct 24, 2010, 06:28 pmQuote from: wayne venomous on Oct 24, 2010, 05:55 pmI've done this with a car stereo! If I get a chance I'll upload a video of this later.Car stereos have the advantage that they have four channels so you can have the sound too. Also you can adjust the fade and balance so you can "fine tune" the lights and sound accordingly.Does that work with any LED or regular small bulb -- like a nightlight in the bathroom?Though, I do like the idea that the sound can be played and will be in sync with the light.