relay help for my light bar on my truck can anyone help

[[email protected]]

well I have a semi truck and a light bar with 12 marker lights in the
bumper I am going to wire them 6 and 6 so when I turn on the turn
signal they flash the right way 6 will flash right and 6 will flash
left I would like to go further and make them flash in a seires
1,2,3,4,5,6, how do I do this. what relays do i need and or anything
eles I would like them to start to flash in the center at number 6 and
flash one at a time down to 1 and work there way to the out side of
the bar so it would be 1,2,3,4,5,6 6,5,4,3,2,1,and start over again.
<<<<<< >>>>>>
left side right side

[Richard Lamb]

wrote:

> well I have a semi truck and a light bar with 12 marker lights in the
> bumper I am going to wire them 6 and 6 so when I turn on the turn
> signal they flash the right way 6 will flash right and 6 will flash
> left I would like to go further and make them flash in a seires
> 1,2,3,4,5,6, how do I do this. what relays do i need and or anything
> eles I would like them to start to flash in the center at number 6 and
> flash one at a time down to 1 and work there way to the out side of
> the bar so it would be 1,2,3,4,5,6 6,5,4,3,2,1,and start over again.
> <<<<<< >>>>>>
> left side right side
>

Something with that many options would be easiest done with a micro
processor and a dozen solid state relays.

Otherwise, it's gonna get ugly with a bunch of TTL or CMOS LSI chips.

SCR's won't work for the switching because it's DC powered. Once turned
on, they won't go off until voltage crosses zero.

I think we're going to have to call in an expert.


Hey, JIM????

[Tater Schuld]

> wrote in message
oups.com...
> well I have a semi truck and a light bar with 12 marker lights in the
> bumper I am going to wire them 6 and 6 so when I turn on the turn
> signal they flash the right way 6 will flash right and 6 will flash
> left I would like to go further and make them flash in a seires
> 1,2,3,4,5,6, how do I do this. what relays do i need and or anything
> eles I would like them to start to flash in the center at number 6 and
> flash one at a time down to 1 and work there way to the out side of
> the bar so it would be 1,2,3,4,5,6 6,5,4,3,2,1,and start over again.
> <<<<<< >>>>>>
> left side right side

I'd try alt.electronics group. they'd give you more answers and possibly an
off the shelf solution

[Richard Lamb]

karel wrote:

> "Richard Lamb" > schreef in bericht
> link.net...
>
wrote:
>>
>>
>>>well I have a semi truck and a light bar with 12 marker lights in the
>>>bumper I am going to wire them 6 and 6 so when I turn on the turn
>>>signal they flash the right way 6 will flash right and 6 will flash
>>>left I would like to go further and make them flash in a seires
>>>1,2,3,4,5,6, how do I do this. what relays do i need and or anything
>>>eles I would like them to start to flash in the center at number 6 and
>>>flash one at a time down to 1 and work there way to the out side of
>>>the bar so it would be 1,2,3,4,5,6 6,5,4,3,2,1,and start over again.
>>> <<<<<< >>>>>>
>>> left side right side
>>>
>>
>>Something with that many options would be easiest done with a micro
>>processor and a dozen solid state relays.
>
> Bit of overkill, I should think.
> And not Jim's approach either.
>
>
>>Otherwise, it's gonna get ugly with a bunch of TTL or CMOS LSI chips.
>
> Ugly? One CD4017 as a counter with the decoder built in,
> and a 555 as a free running clock oscillator.
> Then for each lamp a mosfet (much more reliable than a relay,
> and less expensive than solid state relay) and you're done.
> It ought to be feasible to build the circuit only once
> and have it drive both sets of lamps.
> And oh yeah, will be less perturbed from spikes & the like
> if you feed through an 7809 or so rather than straight from the battery.
>
>
Add a multiplexer to select between the two operating modes.
I can see that working.
Ok, maybe not so bad after all.

[Dave S]

Tater Schuld wrote:
> > wrote in message
> oups.com...
>
>>well I have a semi truck and a light bar with 12 marker lights in the
>>bumper I am going to wire them 6 and 6 so when I turn on the turn
>>signal they flash the right way 6 will flash right and 6 will flash
>>left I would like to go further and make them flash in a seires
>>1,2,3,4,5,6, how do I do this. what relays do i need and or anything
>>eles I would like them to start to flash in the center at number 6 and
>>flash one at a time down to 1 and work there way to the out side of
>>the bar so it would be 1,2,3,4,5,6 6,5,4,3,2,1,and start over again.
>> <<<<<< >>>>>>
>> left side right side
>
>
> I'd try alt.electronics group. they'd give you more answers and possibly an
> off the shelf solution
>
>

The public safety/EMS market has lightbars of this nature that ARE off
the shelf. Be a pinch to adapt it to what he wants to do. Just a matter
of $$$. Google "arrowstick" or "arrowstik".. something like that..

Dave

[Dan, U.S. Air Force, retired]

karel wrote:
> "Richard Lamb" > schreef in bericht
> link.net...
>
wrote:
>>
>>
>>>well I have a semi truck and a light bar with 12 marker lights in the
>>>bumper I am going to wire them 6 and 6 so when I turn on the turn
>>>signal they flash the right way 6 will flash right and 6 will flash
>>>left I would like to go further and make them flash in a seires
>>>1,2,3,4,5,6, how do I do this. what relays do i need and or anything
>>>eles I would like them to start to flash in the center at number 6 and
>>>flash one at a time down to 1 and work there way to the out side of
>>>the bar so it would be 1,2,3,4,5,6 6,5,4,3,2,1,and start over again.
>>> <<<<<< >>>>>>
>>> left side right side
>>>
>>
>>Something with that many options would be easiest done with a micro
>>processor and a dozen solid state relays.
>
> Bit of overkill, I should think.
> And not Jim's approach either.
>
>
>>Otherwise, it's gonna get ugly with a bunch of TTL or CMOS LSI chips.
>
> Ugly? One CD4017 as a counter with the decoder built in,
> and a 555 as a free running clock oscillator.
> Then for each lamp a mosfet (much more reliable than a relay,
> and less expensive than solid state relay) and you're done.
> It ought to be feasible to build the circuit only once
> and have it drive both sets of lamps.
> And oh yeah, will be less perturbed from spikes & the like
> if you feed through an 7809 or so rather than straight from the battery.
>
>
>>SCR's won't work for the switching because it's DC powered. Once turned
>>on, they won't go off until voltage crosses zero.
>
> Yep!
>
>
>>I think we're going to have to call in an expert.
>
> Well I'm not claiming to have Jim's level of expertise.
> But that would perhaps be overkill too, for this simple project.
>
> BTW what's it to do with aviation?
> Who would want to carry all this flashy extra weight?
> Or is it to make sure the truck gets seen on the airfield?
> KA
>
>
Haven't you heard? FAA is proposing turn signals on aircraft.


Dan, U.S. Air Force, retired