Jyge Posted February 6, 2020 Posted February 6, 2020 I wanted to expand my good old Simped pedals with toebrakes. Then I got into 3D printing and found this: https://www.thingiverse.com/thing:3475445 I have now printed the pedals and then I started thinking that I could actually do the whole setup and put it all on one board. I have been playing around with HAL sensors and currently I was planning to put load-cells for the brakes and HAL for the rudder axis. I got myself couple of 20 kg load-cells and some amplifiers from Leo Bodnar. I get some reading out of the axis when putting it all in over MMJoy2, not much but I can not exercise that much force with mere fingers - seems logical so far. As for the HAL - I have these: https://www.amazon.de/gp/product/B07DPVTKBB/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1 I am not very impressed with those, maybe I should get some other higher quality sensors. I do get something when waving a magnet in front of them, I just can not fully figure the logic behind it. I have some magnet and I thought it was more a matter of rotating the magnet field. I get most distinctive response if I take one end of the magnet (S or N) and move it up and down in front of that sensor. So couple of questions: first about the HAL I am not sure if there is some amplifier on that small board with HAL. Do I need one or just the sensor alone? Where can I order simple analog HAL sensors and what type should I look for? amazon is full of these small neodym magnets? Are they ok for the task? How should I move the magnet in front of the sensor? Then about the load cells: I noticed that I get reading (negative axis) from the weight sensor if I pull it. In my plans I only want to push it, so do I "loose" half of the resolution this way? When looking at the MMJOY2 (Spec Function Tab) I have about 25 once the load cell is unloaded. With 1 kg I get 55. With 2 kg I get reading of about 85. By pressing with my thumb I get about 220. I am not sure how much force I want to exercise on those pedals. The 3D printed plastic parts are not that durable. Is this resolution enough or should I have purchased something like 5 or 10 kg load cells instead? I think the brake pedals in car racing games are bigger...
Recommended Posts