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Komaroff

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About Komaroff

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  1. According to reports on the Russian-language forum, the Defender Cobra M5 electronics version v2.10 has appeared. It has a strange controller and strange sensors. https://forum.il2sturmovik.ru/topic/8043-странная-ревизия/ From authoritative sources there is an opinion that there is a possibility that such electronics can be installed in Javelin (the manufacturer of Cobra V5, V6 (aka Javelin, Airrow) is same - Asian Games). https://forum.il2sturmovik.ru/topic/3457-кобра-м5-3-я-серия-механика-устранение-люфтов-ступенек-магнитный-центр/?do=findComment&comment=658555 Can anyone give any information on this subject. Need information (photo, screenshots or other) on recently purchased Javelins (or similar Airrow joysticks).
  2. Hi all. About the analog voltage output and the ability to replace of dead potentiometers in existing joysticks to magnetic sensor. I have long considered options to make an alternative, "fill the niche" of the discontinued KMA200 chip (supported for example in the Kremls L2, F2, F3 controllers), which had the option of analog output voltage. The motivation for practical implementation was the questions from the Brazilian pilot Sokol1 (Sokol1_br), well-known in our community, about the application of developments and methods in the analog axes of existing joysticks with native controllers to replace the dead potentiometers. I decided to implement an analog output using a DAC chip (digital-to-analog converter). This is not the final version, so the photo has focused mainly on the DAC chip. It looks like a "teaser" DAC chip, shown in the photo, is installed, because it was then available. Now I'm reworking with smaller chip cases. I had to put a slightly more powerful processor. The previous one was packed with code to the limit. In general, the implementation of the analog output had little affected on the price. At cost, almost on the cost of the chip DAC and small strapping, necessary for setting operating modes. The DAC chips in the photo and the planned ones have a resolution of 12 bits (4096 discretes of output voltage). Naturally, the efficiency of their use will depend on a number of factors. In particular, from the operating range of the angles, the range of rotation of the handle of the control device. In some cases, only 10 bits is enough, but I thought - let it be a stock, it is useful. The nuances of using the control axes (in particular roll, pitch, yaw, trottle) entail the need to be able to adjust and calibrate the output voltage of the sensor for a particular type of axis and its personal characteristics. Therefore, we have to look for a compromise (improvise) between the limited dimensions of the sensor and a relatively wide range of variations of the necessary settings in order to obtain a sufficiently universal sensor. In accordance with the settings, the prepared signal (the angle value) will be recalculated into the voltage required for to be fed to the ADC of the control device. Among the planned settings are axes with and without center, automatic and manual calibration, with and without inversion. The settings are planned by jumpers. The possibility to use the sensor in digital mode is saved. Dimensions of the sensor I want to do the same as before in PDF DS_RAMS_full.PDF In fact, this method of obtaining analog voltage does not depend on the technology of extracting a useful signal (the angle of rotation of the axis). I prefer using the technology of classic magnetoresistors (MR) on the KMZ41 chip, which combines stability, reliability, budget cost and ease of use. In my opinion, from other technologies on a magnetic principle (for example, GMR (giant giant magnetoresistor) and Hall effect), existing solutions lose at least one of the listed parameters. Therefore, among my developments using a number of solutions MR, GMR (for example), several varieties on the Hall effect, I give priority to the classic MR (more precisely - anisotropic MR, AMR). Now I'm doing the WIP version of a cheap small-sized adapter for converting the digital signal of an excellently proven classic digital sensor from this topic to analog voltage. In particular, to replace the failed potentiometers of existing joysticks. Running forward, I can say that this will be a 4-channel version for the possibility of obtaining the voltages of a standard set of axes of joysticks - roll, pitch, yaw, trottle. PS. The main driver of developments is the interest to physics, mathematics and algorithms, searching for non-standard and best solutions. I will not hide that it pleases, when my developments are used in the constructions of enthusiasts-joystickers and have a practical interest in the community.
  3. For simple replacement of potentiometers need sensors with analog output. For quadrant occurs the problem of shielding near sensors. The magnet of one sensor may affect on sensor of near located axis. What potentiometers used in the quadrant ?
  4. No, it's just a restyling. The analog output will be in the next year. Initially - prototype. PCB of prototype is ready. The form factor from R.A.M.S.-Full. BTW. Whitch config of mounting holes need for Cougar/CH ? Which form of the PCB ? Help me
  5. From other topic. I think about this. I want use inexpensive DAC chip. 10 or 12 bit output resolution ? But in order to do good design I need to know the most popular form factors of this option the sensor. What a resistor and a joystick must be replaced more often. Naturally, this should be fairly respectable joystick. Otherwise, it will be easier to throw out the broken and buy a new one. Under the most demanded form factor I can develop and order good PCB. Additionally need help with resistor dimensions and dimensions of mounting location.
  6. BRD (subj - F3, all axis) and Slaw pedals contain digital RAMS sensor (Rotary Angle Magnet Sensor), not a MaRS. RAMS - sensor of my own design. Digital magnetic sensor for control devices _by Komaroff Hardware resolution of RAMS sensor is 13 bits (8191 digits) per 180 degrees (about 45 digits per degree). Further, it can be summed by controller algorithm to 14 bits per 360 degrees etc. The same hardware angular resolution (about 45 digits per degree) is in MFG pedal sensor. Angular (real) resolution of digital sensor scales by controller to a logical resolution corresponding pedal axis (for example 13 bits = 8191 digits for Slaw pedals). In general, the sensors respond to the rotation of the magnet, which is fixed on the pedal shaft. Technology conventional magnetoresistive effect (not GMR), used in RAMS sensors of BRD and SLAW pedals is robust. The values of signals are used to calculate the angle does not depend on the strength of the applied magnetic field, and responds only to the field direction. The ability to use strong magnets (unlike Hall) allows to be more resistant to spikes effects of magnetic interference from the closest working devices (motors of fans etc.). In addition, each RAMS sensor passes special calibration procedure for max linearity. Available for hobbyist sensors with Giant magnetoresistance (I emphasize - GIANT magnetoresistors, GMR) according to the specification have the requirement of the magnetic field strength limits in order to avoid permanent damage to the GMR-sensor. Sokol1. To use the methods of increasing the resolution described in the article on your link, processed signals must meet certain fundamental conditions. I'm afraid that check these conditions could ignore not only Thrustmaster
  7. BRD uses magnetoresistors for a long time. It is much better than hall sensors. On pedals two types of magneto-resistive sensors were used. Analog and digital. Recently BRD mainly uses digital. Like these ones: RudderMaster - Announcement of pedal controller (rus)
  8. What sensors on the pedals, analog or digital. I see a gray cable, then most likely digital sensors.
  9. Exactly. Now, if necessary, you can contact the controller manufacturer. In addition. Video about the test electronics on the pedals of Slaw.
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