This is it: http://www.hammondmfg.com/pdf/1591XXBSFL.pdf
Auto-cancel Turn Signal Design
- Thread starter PotvinGuy
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fletcherson
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I miss the old radio shack. They were very useful for components.
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Quick update: the circuit design was the easy part. Packaging and parts sourcing is taking some time. Also I had originally intended to make it a universal unit that could handle any user situation. But this required lots of wires, some of which would not be used by many users and would add confusion and cost. So I now plan to build each unit to fit the individual users needs. The cockpit lights and switches are an area of user preference, and I plan to offer several options, and the user can of course choose to provide his own. Some soldering or other types of terminations by the user will be required.
old round fart
Well-Known Member
Outstanding! Glad to hear you are progressing.
fletcherson
Well-Known Member
Are you using a 555 or similar timer? Cool to see a scope, been a while since I’ve played.Time for a pretty picture:
The top trace (red) is the timer output. The bottom trace (yellow) is the pulse that resets the latches when the timer times out.
Yes, the top trace is a retriggerable 555. Scopes have really changed in my life. Now displays are flat and colorful, and for $300 you can get features that even the best scopes didn't have back in the day.
Indy, this is just my test gear, not part of the product.
I feel like Rod Taylor in The Time Machine (very obscure reference; anyone get it?) Here’s the final product:
Just need to stuff it all into the box and add some wires. And here’s a little movie showing it as it would be while waiting with brakes on:
I'll figure out the cost and how to order your customized unit. Stay tuned.
Just need to stuff it all into the box and add some wires. And here’s a little movie showing it as it would be while waiting with brakes on:
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I've gone with a slightly different box: https://www.hammfg.com/files/parts/pdf/1591XXSSFLBK.pdf Better fit, same style.
fletcherson
Well-Known Member
Nice! If you get enough interest to mass produce, it could be reduced a lot in size. Nice to be able to service if needed though. You are right about the scopes nowdays. My old one looks like a dinosaur next to new ones. When I still worked as a field service engineer, I had a nice handheld that the company provided... technology keeps evolving...I feel like Rod Taylor in The Time Machine (very obscure reference; anyone get it?) Here’s the final product:
Just need to stuff it all into the box and add some wires. And here’s a little movie showing it as it would be while waiting with brakes on:
I'll figure out the cost and how to order your customized unit. Stay tuned.
old round fart
Well-Known Member
Have you considered selling a kit for the do it yourself guy?
I'd be glad to do if anyone wants. It is a complicated build, tho, and one needs to have test equipment to debug. I made several errors myself.
Update: the first unit has been powered on for a week and put through it's paces to catch any infant mortalities (one transistor bit the dust, but it was over 40 years old! All production units will be built with new parts). Still working on a couple minor bugs. More pics soon.
fletcherson
Well-Known Member
Lol! I too, retain components for future projects, emergency repairs, etc... saves waiting and trips for parts. Unfortunately, you never know how much life is left in them... great for building proto types, keeps the cost down.
Just in time for 2019! First a pretty scope pic:
...each horizontal box is 1 second, so this is a 3 second flashing.
And a peek under the skirt:
..and the finished unit:
This is my lab unit, which I will use to test new ideas. Production units will have longer wires, 10 ft or more as needed to reach your turn lights and dash without having to make any splices. The timeout range is about 3 to 9 seconds. SEMA units have fixed timeouts, but you can set your own with our unit.
I'm leaving now to climb Mount Etna on new year's eve, but should have pricing and ordering info if I return.
...each horizontal box is 1 second, so this is a 3 second flashing.
And a peek under the skirt:
..and the finished unit:
This is my lab unit, which I will use to test new ideas. Production units will have longer wires, 10 ft or more as needed to reach your turn lights and dash without having to make any splices. The timeout range is about 3 to 9 seconds. SEMA units have fixed timeouts, but you can set your own with our unit.
I'm leaving now to climb Mount Etna on new year's eve, but should have pricing and ordering info if I return.
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