Space Base - A homebrew ICB/ZP

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johnrt:
Here we have like the coolest project I've seen in many moons, and then you guys spend the time discussing a little piece of the artwork? :hissy: The artwork will ALWAYS be a personal preference. There's NO WAY you can make everyone happy with the artwork. I want to see more of the project itself. Technical solutions, WIP pictures and everything else.

SavannahLion:

--- Quote from: johnrt on August 12, 2014, 02:48:41 pm ---I want to see more of the project itself. Technical solutions, WIP pictures and everything else.

--- End quote ---

That's why I keep coming back. I'm watching this thread. I'm really curious which IC he's using as a 10/4 for ten switched inputs. The only IC I know of has the 10th bit implied. Same goes for his choice of servo over steppers or plain jane motors for the bar. I'm opting for the latter since I don't really feel it's a good idea to hack servos for this. And all the other intriguing design choices.

ids:
iirc, the 10/4 encoder I've been eyeing is the CD40147BE

specs: http://www.ti.com/lit/ds/symlink/cd40147b.pdf

I've coded for servo's, varying the speed based on difficulty level and so forth. Untested against a machine at this point. Do you have specific concerns?

I can answer other tech questions you may have as well.

thx

Le Chuck:
Why would we hack a servo when addressable continuously rotatable servos are easily available? I don't get what the "hack" is.

SavannahLion:
Relax guys. It's not an attack. :cheers:

Only servos I've seen are limited rotation. About 180 degrees of rotation, sometimes more, not usually less. If they're continuous rotation it was always because they've been hacked. Their stops usually ground out and the potentiometer modified to always read center. Did a Google search and it seems you can get them already made but the selection seems small. Though I would ask that if you have a servo without the positional feedback, is it a servo anymore? Or is it just a nicely packaged motor with a PWM speed circuit? :P (no more smilie ---steaming pile of meadow muffin--- from this point forward)

My comment about not using them stems from hacking the servos. I fried more than a few motors in one fashion or another and don't have a desire to modify a servo down the road when trying to replace one in my cab. I was eyeing bone standard NEMA mount motors looking for a nice control circuitry to go with it, but I can't for the life of me figure out how much force I need to do what I want. But since you seem to have handily solved that, I'm very curious as to where you sourced said motors. I kind of wanted to wait and see but cest la vie I guess. Everybody bickering about the chick probably killed the mood there.

The only 10/4 I could ever recall is from the 7400 series. It's all I've been working with lately. Never occurred to me to check the 4000 series of IC's. A very interesting way to get only-one-bit-is-flipped down to fewer lines. Even if it was a "10"/4 from the 7400 series. A 10/4 won't work in my circuit but it is a great idea nonetheless. If I was jonesing for pins I either serialized the input or cheated and used my output and strobed the switches. But use a 10/4? No never even crossed my mind.

I like the use of the Pi for audio but are you leveraging all of the Pi's power? You haven't shared yet. I have a different target and different distribution but, with a Pi, you have all sorts of super cool capabilities at your disposal that can be integrated into the game.

I ditched the LED digit display entirely. IMHO it grew too complex with virtually microscopic returns. I might redesign the circuitry but I'll have to settle for a crappy looking board. I have everything except a PCB to solder to.

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