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Post by tronicgr on Feb 11, 2016 19:00:47 GMT
yes you have to have a pot connected otherwise you will get odd behavior. have a fun weekend building! Correct, you will have to have a pot attached electrically at least, otherwise the analog inputs stay low near to the full speed for CCW direction, that would explain why pushing the buttons works only one direction. Best is to attach the pot mechanically on the output of the gearbox to test. Thanks Thanos |
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Post by mhensen on Feb 12, 2016 16:10:31 GMT
Another step ..I boldly welded the levers to the axels.. :-)
and I have crate full of 'heavy metal' :-)
But it is solid as a rock..
Next step is finishing the metalwork.. Because I have no room or garage to spray paint the framework I've decided to wrap it all in carbon foil..
I have to say.. it is looking pretty darn good :-)
First I'll fininsh all the wrapping of the pieces, includung the upper framesection.. Then I will start to layout all the parts and try to make it a single frame..
Exciting weekend ahead!! |
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Post by GA-Dawg on Feb 12, 2016 20:44:03 GMT
Looks fantastic. I am going to need to catch up
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Post by snafky on Feb 12, 2016 22:50:36 GMT
Very nice looks!
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Post by mhensen on Feb 13, 2016 15:46:23 GMT
love it when it all gets gets together! 
and couldn't resist.. no the wiring needs to be done.. engines tested.. calibrating with pots.. enough to do.. butr that is another day!! oh.. almost forgot. align the lower frame with the upper frame :-) I do want to brace it at the top of the motors too!! BTW.. the room is just big enough or the sim is gonna be just the right size..
Just came 20cm of my carbon wrap short.. need to order more but I'll also order some for the wooden bracing planks.. |
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Post by snafky on Feb 13, 2016 17:24:29 GMT
Wow that looks realy nice!!
Since you're saying the room is just big enough.
Would a room of 2Mx3M be big enough?
Because that's the size of the room i want to use myself when i have moved house.
Would it be big enough? (in other words what is the footprint area of the platform?)
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Post by paulg100 on Feb 13, 2016 17:46:29 GMT
looks great Michael, I was making good progress with mine today, almost finished welding the top supporting frame to main top frame ready to mount seat and..... my welder packed up a couple of welds short!! argh. Now I have to go buy a new welder by the looks of it, more money  using the carbon fiber wrap has saved a ton of time with prep work and spraying. snafky: no I don't think 2x3m is big enough. would need at least 2.5 x 3m at the least id say. |
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Post by mhensen on Feb 14, 2016 20:01:00 GMT
Too bad. I have a lot of trouble with the thanos board.. I am not sure what is going on, all I know it won't work correctly.. The situation is as follow... I have connected 1 motor but all 6 pots.. On the VDF I csn see the direction ok.. although I sess the line 1 flickering constantly.. and with d001 of the VFD is can see 0.5 khz coming in.. but no matter what I push on the buttons .. no movement, forward or backward.. I can see the direction change on the VDF! Eventually I swapped the chips at the 24 side.. No the motot turwns only in reverse.. not the other way!? but it turns instead of having just a 0.5 khz noise and it reacts to the buttons on the board (1 direction!). I am lost and think I messed up the thanos board or the extension board.. I don't what is the correct behaviour is anymore.. all I know the 2 chips behave differently !! but which on is ok. or are they both weird..?! Can I send it to you tronicgr to have it checked?! I am lost and have checked all the wires a million times.. even disconnected all lines that are not in use, except for the pots! I did all checks with the pots on 50% and pot 1 I used for turning.. If there are things I can check please let me know.. I'll reconnect my mini servo platform tomorrow to exclude the main board.. Or is theextension board so fool proof that all chips are replaceable?! |
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Post by paulg100 on Feb 14, 2016 21:43:12 GMT
so you have 1 vfd tunrned on, and pot for motor 1 is connected to the motor shaft?
then amc is set to pos 1,3,5 neg 2,4,6
when power to vfd is switched on motor should rotate and stop when it finds center
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Post by tronicgr on Feb 15, 2016 2:54:55 GMT
Too bad. I have a lot of trouble with the thanos board.. I am not sure what is going on, all I know it won't work correctly.. The situation is as follow... I have connected 1 motor but all 6 pots.. On the VDF I csn see the direction ok.. although I sess the line 1 flickering constantly.. and with d001 of the VFD is can see 0.5 khz coming in.. but no matter what I push on the buttons .. no movement, forward or backward.. I can see the direction change on the VDF! Eventually I swapped the chips at the 24 side.. No the motot turwns only in reverse.. not the other way!? but it turns instead of having just a 0.5 khz noise and it reacts to the buttons on the board (1 direction!). I am lost and think I messed up the thanos board or the extension board.. I don't what is the correct behaviour is anymore.. all I know the 2 chips behave differently !! but which on is ok. or are they both weird..?! Can I send it to you tronicgr to have it checked?! I am lost and have checked all the wires a million times.. even disconnected all lines that are not in use, except for the pots! I did all checks with the pots on 50% and pot 1 I used for turning.. If there are things I can check please let me know.. I'll reconnect my mini servo platform tomorrow to exclude the main board.. Or is theextension board so fool proof that all chips are replaceable?! You should have a look here at this video to check the outputs of the 6DOF ext board: youtu.be/aUoZ_3tSuNkThen you could check if you have setup correctly the VFD, plug a simple potentiometer (not magnetic contactless) on the VFD analog input and ground and +10v and then from the external power supply you can directly contact the +24v to each direction input of the VFD. Then depending on the speed setting on the potentiometer it should rotate each direction manually. Consult the VFD manual how to connect the simple potentiometer. The wiper of the pot should go to the analog input and one side of the pot to ground and other to +10v on the VFD. Take a video of the testing so we can help with what is going there. Thanks Thanos |
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Post by mhensen on Feb 15, 2016 8:35:01 GMT
Thanks Thanos!!..
Just did a bidding on an osciloscoop as I don't like the multimeter.. the readout is terrible :-)
So I'll need some time to get the video !!
By setting the 24V to the direction input on the VFD .. You really mean both on 1 and 2 put 24V?!
And 10V is a bit hard to get, don't have a transformator for that.. I guess 9V would be suffiecient enough as it the input should range from 0 to 10?!
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Post by tronicgr on Feb 15, 2016 16:54:05 GMT
The VFD terminal provides +10v.
Just attach the potentiometer (warning again simple potentiometer) to the +10v, ground and the wiper of the potentiometer to the analog input of the VFD inverter. You can use the potentiometer then to set the speed of the motor.
Then, using the external +24v power supply, connect the GND from the power supply to the ground of the VFD, and connect either direction 1 input of the VFD to the external power supply or direction 2 input of the VFD. Not both directions at the same time.
This will allow you to "simulate" the signals from the 6DOF ext board to manually test the speed and direction of the VFD without the amc1280usb and the 6DOF ext boards connected.
I hope it's understandable and I won't have to make a drawing of this... Actually in the VFD manual there is already a schematic showing this connection on the terminal.
Thanks
Thanos
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Post by snafky on Feb 15, 2016 20:56:13 GMT
If you are really in need of a scope i have one with a "real" tube (i think its 30mhz)
So if you need to borrow it no problem.
You can use it for the time being as i don't use it much (almost never ;-) )
But if you found one, that's always better ;-)
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Post by mhensen on Feb 15, 2016 22:47:39 GMT
The VFD terminal provides +10v. Just attach the potentiometer (warning again simple potentiometer) to the +10v, ground and the wiper of the potentiometer to the analog input of the VFD inverter. You can use the potentiometer then to set the speed of the motor. Then, using the external +24v power supply, connect the GND from the power supply to the ground of the VFD, and connect either direction 1 input of the VFD to the external power supply or direction 2 input of the VFD. Not both directions at the same time. This will allow you to "simulate" the signals from the 6DOF ext board to manually test the speed and direction of the VFD without the amc1280usb and the 6DOF ext boards connected. I hope it's understandable and I won't have to make a drawing of this... Actually in the VFD manual there is already a schematic showing this connection on the terminal. Thanks Thanos Got the idea.. thanks!!! I have borrowed a scope, so I'll have it by the end of the week and start setting this testsesion up! |
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Post by mhensen on Feb 15, 2016 22:48:48 GMT
If you are really in need of a scope i have one with a "real" tube (i think its 30mhz) So if you need to borrow it no problem. You can use it for the time being as i don't use it much (almost never ;-) ) But if you found one, that's always better ;-) Thanks,, Already found somebody via my facebook account that has one.. He'll bring it at the end of the week.. also an old tube thing I think :-)
But thanks anyway!!
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