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Post by tronicgr on Jan 12, 2017 21:49:20 GMT
The quality on the movements is even better? What is the best solution? 180 ° pot? 360 ° pot with reduction to 180 °? 10 turns POT with reduction to 180 °? Someone tested the difference in games? The sensations are different? Its not matter of degrees of rotation. The new digital SSI sensors I'm adding in next firmware are noise free. So far it looks like they are faster to read too than the analog sensors where you need time to settle the reading. I would say the digital sensors I show above should make the motion much more smooth if you eliminate mechanical issues like backlash of the gearboxes of the motors. Did you see my post about the string potentiometer using magnetic hall effect sensor? That would be even smoother to use but it's more fitted for linear actuators. Thanks Thanos Hi everybody, I have been thinking to add an option for the 12bit sensors to be treated as native 180 degrees sensor. This will drop a little bit the available positions to 2048 but you will not need additional 2:1 gears, but it will plug directly on the output axle. No additional limits will need to be defined either, as any values below 1024 and above 3072 will be rejected as maximum position limits. What do you think?
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Post by vicpopo on Jan 13, 2017 6:05:07 GMT
Hi Thanos,
You said that the avaible positions would drop to 2048 ,but it's better as today ? Should be tested and I'm ok to test this.I will wait another feedback to take the decision to change for the new sensors you propose.
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Post by paulg100 on Jan 13, 2017 7:10:55 GMT
"I have been thinking to add an option for the 12bit sensors to be treated as native 180 degrees sensor. This will drop a little bit the available positions to 2048 but you will not need additional 2:1 gears, but it will plug directly on the output axle. No additional limits will need to be defined either, as any values below 1024 and above 3072 will be rejected as maximum position limits. What do you think?" yes sounds good, more options the better , I have 1 sensor here and mounts printed, just waiting for my custom boards to come back from OSHpark (they shipped today) then can get this tested. I'm hoping it will help with my jitter issues.
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Post by hexpod on Jan 13, 2017 7:28:33 GMT
Its not matter of degrees of rotation. The new digital SSI sensors I'm adding in next firmware are noise free. So far it looks like they are faster to read too than the analog sensors where you need time to settle the reading. I would say the digital sensors I show above should make the motion much more smooth if you eliminate mechanical issues like backlash of the gearboxes of the motors. Did you see my post about the string potentiometer using magnetic hall effect sensor? That would be even smoother to use but it's more fitted for linear actuators. Thanks Thanos Hi everybody, I have been thinking to add an option for the 12bit sensors to be treated as native 180 degrees sensor. This will drop a little bit the available positions to 2048 but you will not need additional 2:1 gears, but it will plug directly on the output axle. No additional limits will need to be defined either, as any values below 1024 and above 3072 will be rejected as maximum position limits. What do you think? This kind of sensor scaling is allready possible in the . Ini file of the x-sim plugin. It's a good idea to have it in the AMC as well
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Post by tronicgr on Jan 13, 2017 14:29:43 GMT
Well, it will simplify the mechanical connections and 2048 positions with no jitter is still better than before.
And apart from that, I'll be adding support for a 14-Bit sensor soon, that will provide 8192 positions in 180 degrees setting. But it costs double the price of the AEAT SSI sensor.
In any case it helps that the input from the motion software is 16-bit and can be scaled down to any size sensor.
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gokhan
Junior Member
Posts: 89
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Post by gokhan on Jan 13, 2017 15:54:19 GMT
My humble opinion: it is better to have less mechanical complexity/ backlash problems than having 4k resolution. I would definately go for native 180 option with 2048 positions.
Thanks Thanos, any indication when it will be ready to release?
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Post by tronicgr on Jan 13, 2017 17:11:43 GMT
My humble opinion: it is better to have less mechanical complexity/ backlash problems than having 4k resolution. I would definately go for native 180 option with 2048 positions. Thanks Thanos, any indication when it will be ready to release? That's my point exactly. Less trouble mounting them too. But there will be still option to get the full resolution if you like. The new firmware that has this functionality plus the extra support for additional hardware added to the new 2017 AMC1280USB v2 and 6DOF ext v4 will be ready in next one or two weeks, released as beta first. I'll check all functions but I might miss something as big changes are usually messy. Thanks Thanos
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Post by tronicgr on Jan 27, 2017 23:32:13 GMT
Hi, I got the 14bit spi digital absolute encoders, just in time to add them to the next firmware release. These have a secondary channel redundant reasons, but only one channel needs to be connected. Thanks to hexpod for the arrangement to get them. Now back to coding Thanks Thanos
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Post by Flyhigher on Feb 2, 2017 11:41:37 GMT
Hi Thanos,
Any recommendation where to buy those encoders?
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Post by tronicgr on Feb 2, 2017 12:28:29 GMT
Hi Thanos, Any recommendation where to buy those encoders? I got contact to that company that makes them through hexpod But wait a little bit to add support for them in the firmware. I'm still working on the SPI timing on these.
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Post by riton39 on Nov 2, 2017 20:39:36 GMT
Hi, in the AMC menu, for potentiometers, I have 360 ° analog potentiometer with 180 ° mechanical reduction should I choose 180 ° or 360 °? I do not understand this function. thanks
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Post by billo2404 on Oct 19, 2018 0:13:08 GMT
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