andress Posted June 5, 2017 Share Posted June 5, 2017 Hi, can anyone help to determine the hall effect sensor type from its markings? My guess the marking says 4451H 615 but nothing turns up if I google this. Thanks to anyone with helpful info! Link to comment Share on other sites More sharing options...
esaj Posted June 5, 2017 Share Posted June 5, 2017 MT4451-A (TO-92 package) latching hall sensor? http://www.haierxikj.com/UploadFile/Photo/2015-12/2015122116070476677.pdf Link to comment Share on other sites More sharing options...
andress Posted June 5, 2017 Author Share Posted June 5, 2017 It is a newer version of the ks14c motor. I broke the axle again and during pressing out of the axle from the motor and other handling the mosfet legs broke. Protective sleeves didn't help much. i will write more about the process once I'm done. 2 hours ago, esaj said: MT4451-A (TO-92 package) latching hall sensor? http://www.haierxikj.com/UploadFile/Photo/2015-12/2015122116070476677.pdf Thanks so much! You are the best Link to comment Share on other sites More sharing options...
Rehab1 Posted June 5, 2017 Share Posted June 5, 2017 13 minutes ago, andress said: It is a newer version of the ks14c motor. I broke the axle again and during pressing out of the axle from the motor and other handling the mosfet legs broke. Protective sleeves didn't help much. i will write more about the process once I'm done. 3 hours ago, esaj said: Damn....I just purchase the KS 14-C for my wife. Do you jump curbs or any other activity that would put high stress on the axle? Link to comment Share on other sites More sharing options...
andress Posted June 5, 2017 Author Share Posted June 5, 2017 I actually think that the second time was caused by not using spacers between the pedals and the motors. The old ones didn't fit and I didn't get new ones with the motor and since @tinawong told me its ok I went ahead and installed the motor without them. Maybe I put the pedal holders a bit too far from the motor and that caused higher stress on the axle due to bigger leverage? At least that is my working theory since I barely ever jumped on the unicycle with the new motor. btw @esaj how do you know its the type A? EDIT: Oh I see its the casing type Link to comment Share on other sites More sharing options...
esaj Posted June 5, 2017 Share Posted June 5, 2017 12 minutes ago, andress said: btw @esaj how do you know its the type A? It's the type with the flat TO-92 package. Well, I guess it could be the MT4451A-T too, the difference seems to be just radial vs. (probably) straight leads, but I'm not sure what the difference is with TO-92's with radial or non-radial leads, I don't think there are TO-92's with axial leads? Family Members MT4451A Flat TO-92 package, Radial lead, bulk packaging MT4451A-T Flat TO-92 package, bulk packaging I guess the non-radial leads could mean the T3/L-type here, and T2 would be non-radial... or the other way around? Link to comment Share on other sites More sharing options...
andress Posted June 5, 2017 Author Share Posted June 5, 2017 I do hope its not the MT4451A-T since that would mean exact opposite outputs than MT4451A according to the spec sheet Link to comment Share on other sites More sharing options...
esaj Posted June 5, 2017 Share Posted June 5, 2017 Just now, andress said: I do hope its not the MT4451A-T since that would mean exact opposite outputs than MT4451A according to the spec sheet Actually, there are pictures of the radial and the other type later in the datasheet... just check pages 6 & 7 Link to comment Share on other sites More sharing options...
esaj Posted June 5, 2017 Share Posted June 5, 2017 9 minutes ago, andress said: I do hope its not the MT4451A-T since that would mean exact opposite outputs than MT4451A according to the spec sheet Aand.. they're very confusing with the model names... AT is the SOT-23 -packaged chip with different pinout, A and A-T (notice the hyphen between A and T) are TO-92 -packaged, and have the same pin-assignments. Link to comment Share on other sites More sharing options...
andress Posted June 5, 2017 Author Share Posted June 5, 2017 Yes, I noticed that, thank you. As I didn't find any suplier here in czechia I will most likely use TLE4935L as the specs look pretty similar and I can get it tomorow and I have already once used it and it worked (different unicycle - Freeman). Hopefully it will not change the riding experience. Link to comment Share on other sites More sharing options...
andress Posted June 18, 2017 Author Share Posted June 18, 2017 @esaj @electric_vehicle_lover I couldn't get the right gauge wires in the right colors in the store so after changing the axle I put new wires in but during manipulation lost the tags describing which is which. So after some experimenting now the unicycle acts as it acted when I once put the motor in the other way around (Kingsong actually changed the side where the cable goes from the axle between the old and newer version of KS14C) but had it connected the right way. Just this time I'm not sure about the order of the wires but I'm sure the motor is in the right way. So should I play with the order of the phases or the hall sensors? Hope my question makes sense... Thanks Link to comment Share on other sites More sharing options...
esaj Posted June 19, 2017 Share Posted June 19, 2017 You mixed up the signal wires of the three hall-sensors? Yeah, can't think of any other way than to try different combinations until you find the right one. Luckily, there's "only" 6 combinations... Link to comment Share on other sites More sharing options...
andress Posted June 19, 2017 Author Share Posted June 19, 2017 The thing is I don't know whether it is the hall sensor wires that are mixed up or motor phase wires :/ so 36 combinations I'm glad I got it working at least this way so I know the motor and control board still work Link to comment Share on other sites More sharing options...
andress Posted June 19, 2017 Author Share Posted June 19, 2017 Got it! seems like I have successfully managed to replace the axle and keep the unicycle functioning!! Link to comment Share on other sites More sharing options...
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