Me too. should it do steepers as well?
I have no current use for this at the moment. I was asking just to ask. I had seen some questions about them in a couple of other threads and had not on this one.Me too. should it do steepers as well?
Steppers are quite a different animal compared to servos. Full rotational movement with indexed positioning. Although they don't typically provide postion feedback. In what kind of scenario would you use this? If you're considering continuous rotation with speed control, a servo can do that with a minor modification. This is common with small robotics to use servos as wheel drive motors. With this mod done, the PWM sent to the servo will control rotation direction and speed. It requires nothing different in the PWM transmission. Check out this page for more info: http://www.societyofrobots.com/actuators_modifyservo.shtml
Bob,
Endpoint adjustments can (and should be) done via mechanical linkage using the servo horns. That's why the horns have multiple holes on each arm and most servos come with an assortment of different sized horns. Computerized end-point control is certainly more convenient, but people mistakenly rely too much on the computer settings and don't think about the mechanical ratios required to get maximum performance from a servo. Remember, the more you limit travel using mechanical linkages, the more torque you get and the less stress is placed on the servo. Not to mention lower power consumption. It's clearly better for the servo. Set your "gear ratio" so that full travel (min to max) does not exceed the range of the driven item. With DMX, you can then use min and max dimmer values to limit futher. All that assumes that you've chosen the correct servo for the job in the first place.
Mike,
That would be great if you could help out. Let's see what the admins and RJ think of this idea and then we'll go from there in terms of design criteria and features. I would prefer to keep things simple and deliver it in a timely fashion. Although I'd be happy to see someone else step up and build something more elaborate and robust if that's the direction this needs to go.
Dave
It shouldn't be too hard to add limits to the firmware. I guess you could use a separate configuration mode that would interpret DMX values as limits and save them away.
I better stop now before this turns into too much of a design session on the boards here...
/mike
How many servos would it control? Three would be good then you would have XYZ coverd.
nice can hardly wait to get one. I have 6 servos from an RC plane that I had 25 years ago and been saving them for a reason I guess and here we go dmx servo controlled project now. Keep up the good work Dave.
any updates on this project.
Dave has gotten sidelined by work (why does that always interfere with blinky?) I have an order from Mouser coming in this week to verify the BOM (for both this and the tester); hopefully we can push them through shortly.
/mike
hello Dave/Mike
My project needs a brain ;D and everything else to.
Jess
What I would do for your project would be to use wire forms and cover them with parachute material and back light it maybe
Ok, I only have 3 boards, so the first 3 get them.
Steve, John and rrawlings, please PM your mailing addresses.
I believe there are more prototype boards available. Hopefully Mike and/or Charles will chime in and indicate how many they have available for these tests.
This sounds like it is doable for me. I am an engineer and work daily with this type of thing, software is my weak point. I have been using this hobby as a reason to learn programming and am slowly picking up microcontroller programming using assembly code.
I have a couple of boards coming, where can I find the Mouser BOM?
Well i sent money ton1ist ,and sent my address to egenoup (did he mean he wanted payment, not just my address in the email?).
I use these on my plane are they OK?
http://www.hitecrcd.com/products/digital/robotics/hsr-5990tg.html
RJ
Hello Dave
Just been out looking at vixen to control Bobcat Servo board Is there a plungin or add-in for this?
Jess
Thanks Dave
I have been playing around with Vixen, and for those that don't know how to convert cell value from percent to a number there is a button 3rd from the right on the row (cell on, cell off, ramp on, etc.). Also the 2nd from the right will display the values in the cell all the time. Very helpfull at least for me.
Jess
Dave
So if the starting point 63 and ending point is 191 set by the configuration program you still get 256 discreet steps with Bobcat servo control?
Jess
Jumper is now in the artwork...
/mike
Where do I find the version?
OK I'm running, For now I'm using battery's to power my board until I get a better power supply. The board is running solid with cheep china servos ;D. The only problem is when ran by Vixen, at the start the servos will try to center (4) and cause a brown out and jitter on all four servos. The servo board will shut down and red led will flash. disconnect power and reapply the fault will clear, very cool.
Thanks you Dave and Mike
Jess
Way it sounds, you need atleast a 3 amp supply to work right.
So instead of reading though 10 pages of great info how do I get a board or two? Sounds like you guys came up with the perfect servo controller for a fraction of the cost of any thing out there and the best thing is it is a DIY project. :)This is is beta for testing not available yet
The COOP for the servo boards and DMX testers has begun. You can find it
here (http://"http://diylightanimation.com/index.php?topic=6684.0")
/mike
:o link is bad <fp.
The COOP for the servo boards and DMX testers has begun. You can find it
here (http://"http://diylightanimation.com/index.php?topic=6684.0")
/mike
Can you provide link(s) to servos that can work with this controller?
Any R/C type servo will work. Analog or digital.I'm looking at adding animations to my Christmas display. I Googled servo motors and found them from $6 to nearly $500. Can you give me any idea what I would need to make Rudolf lift his head or Santa wave his hand? I know it will be a range based on materials, especially the weight of the materials.
Any R/C type servo will work. Analog or digital.I'm looking at adding animations to my Christmas display. I Googled servo motors and found them from $6 to nearly $500. Can you give me any idea what I would need to make Rudolf lift his head or Santa wave his hand? I know it will be a range based on materials, especially the weight of the materials.
Concept: wireframe Rudolf wrapped in garland and lights. I want his head to lift.
- Rimist
Sent from my HTC Glacier using Tapatalk
Any R/C type servo will work. Analog or digital.I'm looking at adding animations to my Christmas display. I Googled servo motors and found them from $6 to nearly $500. Can you give me any idea what I would need to make Rudolf lift his head or Santa wave his hand? I know it will be a range based on materials, especially the weight of the materials.
Concept: wireframe Rudolf wrapped in garland and lights. I want his head to lift.
- Rimist
Sent from my HTC Glacier using Tapatalk
Are there any Halloween projects in the works this year using this controller? I'd love to see that people are doing with it.
Dave