Sieben 2 Report post Posted November 26, 2018 Test rig for FFB Wheel with Arduino. Soft EMC. Credits to EBOLZMAGY. https://drive.google.com/drive/folder... His channel:https://www.youtube.com/user/ebolzzable Share this post Link to post Share on other sites
Sieben 2 Report post Posted November 28, 2018 Update) Construction notes. Share this post Link to post Share on other sites
Sieben 2 Report post Posted December 5, 2018 Have got an idea to move backwards the wheel base itself. This will alow to place the monitor way much closer then conventionally. For that the following is made: Share this post Link to post Share on other sites
Sieben 2 Report post Posted December 19, 2018 Figured out that, if the pulley be placed on the steering column shaft, just beyond the wheel itself, the FFB DIY wheel build, becomes a lot easier thing to be made. The connection with encoder then can go like this. For now, as it have got to be checked with separate motor base, and be connected with column by means of cardan shaft, some welding works required, to make the know how coupler, fot it. Share this post Link to post Share on other sites
Jeremy.Ford 108 Report post Posted December 19, 2018 It's a fascinating project you have going here. Great job. Share this post Link to post Share on other sites
Sieben 2 Report post Posted December 20, 2018 Thank you very much!) Share this post Link to post Share on other sites
Sieben 2 Report post Posted December 20, 2018 There were also Forse Linearity test, with wheel check. Share this post Link to post Share on other sites
Sieben 2 Report post Posted December 20, 2018 Figured out the joint without welding. Left is to the base shaft, and right to cardan. Should make minor outer size reduction of the nut. Outer is 13mm, should be 12mm. Share this post Link to post Share on other sites
Sieben 2 Report post Posted December 24, 2018 Update) 1 Jeremy.Ford reacted to this Share this post Link to post Share on other sites
Sieben 2 Report post Posted December 25, 2018 Drill chunk with key is a connector to the steering column shaft. But put a base with direct connection to the wheel. Put a base on the rubber buffers. No noze) Share this post Link to post Share on other sites
Sieben 2 Report post Posted December 26, 2018 Just a demo to show the rotation rate of a wheel in a spin) Share this post Link to post Share on other sites
Sieben 2 Report post Posted December 26, 2018 "Quick release", made simple. Share this post Link to post Share on other sites
Sieben 2 Report post Posted February 26, 2019 The welding joint of the link coupler from shaft to encoder, was broken. The drill makes a deal) Share this post Link to post Share on other sites
Sieben 2 Report post Posted February 26, 2019 Some wheelcheck step test charts in numbers. One rev to 360deg from 0 revs, and time for it. Responce time from the moment the signal are made.Some DIYs and not only for comparison.Motor770, (100% gain, basicaly 50% gain are used)(362.84deg-0.13deg) ( i.m. how many degree close to 360deg, were taken for calculations, and time to reach it consumed.) 362.71deg for 184ms1000ms/184ms = 5.4rev/sec = 324 rev/min minimum.8ms to respond from startMy1025, without wheel, with 12V, 12,5A (150W instead of 300W the motor requires) 1:4gear(368.53deg-8.76deg)359.77deg for 208ms 1000ms/208ms=4.8rev/sec = 288rev/min minimum.12ms to respond from startBSSim My1016, 1:4gear (50% GAIN Mmos)(366.59deg-1.79deg)364.76deg for 236ms 1000ms/236ms=4.2rev/sec = 252rev/min minimum.6ms to respond from startPOWER steering motor, Conventional steering wheel, 18.8V(362,32-0,26)362deg for 236ms1000ms/236ms = 4.2rev/sec = 252rev/min 4ms to respond from startCGWheel (Caravangoes), Lightweight wheel, 1:3 gear. 360.94deg for 246ms1000ms for 246ms=4.06rev/sec = 243.6 rev/min minimum.8ms to respond from startAnd.OSW Direct Drive, Sparco (361.47-0.39)361deg for 304ms =3.28rev/sec=198rev/min2_ms to respond from startG27Just a chart)10ms respond from start. The scooter motors for ffb wheels, are quite a "that’ll do". IR ffb gain was 12% enough. Without IR LUT add on. BSSim vids. Share this post Link to post Share on other sites
Sieben 2 Report post Posted February 26, 2019 End new EMC soft is released. Share this post Link to post Share on other sites
Sieben 2 Report post Posted February 28, 2019 Guess BTS needs a better cooling, to how it is done on default. The radiator seems not joined properly, at all, to that. Share this post Link to post Share on other sites
junhai.yang 0 Report post Posted April 19, 2019 (edited) Great job! I am also working at my project with dc motor, Arduino and belt system. But I think there is some problem with the rfr software. Can you please tell me where to download the emc software? Thank you very much.I have been searching for this software for about one week,but with no luck. that would be great if you can send me by email([email protected]). Thank you! Edited April 19, 2019 by junhai.yang Share this post Link to post Share on other sites
Sieben 2 Report post Posted April 30, 2019 Oups, sorry for late reply. A new one is here. Under the video description section. And also this. https://drive.google.com/open?id=18ga_4hllxuXwrZIfV0OhTB6x-NbzdXEJhttps://drive.google.com/open?id=1fND92a2Vtkv6VwkfkI68PQd8rOhJ5giq Share this post Link to post Share on other sites
Sieben 2 Report post Posted May 2, 2019 (edited) The DIY H-bridge test. Edited May 2, 2019 by Sieben Share this post Link to post Share on other sites
Sieben 2 Report post Posted May 4, 2019 Put 4 Farad condenser to the power line supply. Can tell that there are improvements in the response when a wheel fully consumes the power from PSU. CADENCE CAP4DR Also, it is required to have only 12-15V to power the motors but lots of Amps. New PS was taken: 400w 12v/33.3A. But, to maintain the experimental integrity, was tested with 12.5A, And with and without a wheel. 600ms no wheel 50% ffb gain/max force Delay 10ms 360 deg for 258 ms = 3.8rev/sec = 228 rev.min no wheel 600 ms 100% ffb gain/max force Delay 10ms 360 deg for 194ms = 5.1rev/sec = 306 rev.min 450 deg for 232ms 300/600ms 100 FFB Gain. 50% Gain. 60% with wheel. 39/49% with wheel With wheel 100%. 100% no wheel no cap. Looks m.b even better. Whatever. Seems that no full power ffb gain can improve the results. https://drive.google.com/file/d/1054xri5aGpmV-5j0TXvKqddBkbnf8RdS/view?usp=sharing https://drive.google.com/file/d/1Wtaps8t1f8x2o20akkIN3kQpNMK6IJqM/view?usp=sharing https://drive.google.com/file/d/1dEj2sW1hDrma4RUT0iYICM9MO8dX2RL_/view?usp=sharing https://drive.google.com/file/d/1nc0DSMT2K4qfJLtc6Wdg3dOW72_FzRU5/view?usp=sharing https://drive.google.com/file/d/16DSXM4RC1nWzlr_HTRACaVhO1FXCJB3t/view?usp=sharing https://drive.google.com/file/d/15HC0HS7x7FRX5GACx5id21blnAdLonUh/view?usp=sharing Also tested with transistor instead of the optocoupler. The optocoupler works as if on&off. It is playable. All is well. But no smooth transition on ffb. Transistor has it, but very small ffb amount present then. And that PWM sound on the motor. Need some tinkering. Share this post Link to post Share on other sites
Sieben 2 Report post Posted May 5, 2019 Without optocouplers. Guess just need to put IRLB-3034 instead of IRF-3205, and that should go right without gate drivers things. Share this post Link to post Share on other sites
Sieben 2 Report post Posted May 5, 2019 And IRLB3034. Now that gives descent ffb ) With wheel And just base. Share this post Link to post Share on other sites
Sieben 2 Report post Posted May 7, 2019 The kicks while using the optrons to drive gates, are solved. There should be NO common ground between separate power supply, to fully gate openings, via optrons, and the h-bridge motor driver board) Now it has smooth operation. http://tahmidmc.blogspot.com/2013/02/n-channel-mosfet-high-side-drive-when.html Share this post Link to post Share on other sites
Sieben 2 Report post Posted May 11, 2019 (edited) Small nota bene. Made in accordance with this connections. Gives full mosfet openings, quick and powerfully. But on the whole a bunch of mosfets should be made in parallel for powerful motors to works as ffb wheel. And with 100% ffb. Edited May 11, 2019 by Sieben Share this post Link to post Share on other sites
Sieben 2 Report post Posted May 23, 2019 Made up the parallel mosfets. Without heatsinks decided to conduct the spring test a bit, and burned'em down ) . Share this post Link to post Share on other sites
