tag:blogger.com,1999:blog-8200098102909041178.post5731462584800369640..comments2024-03-24T09:12:10.872-04:00Comments on Shane Colton: Arduino HexBridge Shield v2.0Shane Coltonhttp://www.blogger.com/profile/10603406287033587039noreply@blogger.comBlogger19125tag:blogger.com,1999:blog-8200098102909041178.post-76431589530078057002015-10-05T05:00:42.822-04:002015-10-05T05:00:42.822-04:00Hi! Same with me. I can not download the file. Cou...Hi! Same with me. I can not download the file. Could you send it to me per email? blub(at)smart.ms Anonymoushttps://www.blogger.com/profile/11778917456427999735noreply@blogger.comtag:blogger.com,1999:blog-8200098102909041178.post-88454395853674674502015-06-07T13:54:10.593-04:002015-06-07T13:54:10.593-04:00I second Ahmed's comment. I have made somethin...I second Ahmed's comment. I have made something similar but with four half bridges and current measurement although have no idea how to go about driving these ir21844's. Could you link to a code example or something?Nicknoreply@blogger.comtag:blogger.com,1999:blog-8200098102909041178.post-54489890560437317242014-03-18T19:47:03.902-04:002014-03-18T19:47:03.902-04:00Hi I cant download the file anymore. Would you ple...Hi I cant download the file anymore. Would you please help me ?Anonymoushttps://www.blogger.com/profile/04223230087483561241noreply@blogger.comtag:blogger.com,1999:blog-8200098102909041178.post-37646229033457583562014-02-05T00:28:26.000-05:002014-02-05T00:28:26.000-05:00There are a number of reasons it could be getting ...There are a number of reasons it could be getting hot, but I think a larger DC bus capacitor is a good place to start. 40uF seems low. You can check dV = I/C*dt = 2A/40uF*50us = 2.5V. That's not too bad for a 48V bus, but maybe the current ripple is too high for that capacitor. It would not necessarily explain the IR2184 getting hot - that should not depend on load current.<br /><br />The hexbridge as-built on the PCB I have tested to 48V and ~30A peak / 20A continuous at 15.6kHz. PWM Duty cycle was low, probably 10% (low resistance load). It can handle more current if you parallel the legs.Shane Coltonhttps://www.blogger.com/profile/10603406287033587039noreply@blogger.comtag:blogger.com,1999:blog-8200098102909041178.post-5845543221623565902014-01-28T09:50:20.853-05:002014-01-28T09:50:20.853-05:00Hallo shane , Ive build your halfbridge-circut on ...Hallo shane , Ive build your halfbridge-circut on a breadboard. I used a ir2184 dirver. At frist the Halfbridge works fine and fast. (10kHz) But if i put more load on it. (more than 2a at 48V) the Driver gets hot and demaged :( My DCbuscompasidor is 400v and 40uf. Is this too less . Or is the delaytime (400ns) to low? Has the bus capacidor any effect on the driver or the currrent though the Mosfets(200v 54A) ?<br /><br />Finaly how much Load have u already given to your hexbridge without demage. ? (f,U,I,duty)?<br /><br />nice Project best wishes Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-8200098102909041178.post-67162325833983637112013-08-29T00:01:30.009-04:002013-08-29T00:01:30.009-04:00Certainly possible, although you will have to solv...Certainly possible, although you will have to solve the problem of how to sense the position of the motor. It can be done with an encoder, a resolver, Hall effect sensors, or a potentiometer. Then there is just some feedback control code to write. :)Shane Coltonhttps://www.blogger.com/profile/10603406287033587039noreply@blogger.comtag:blogger.com,1999:blog-8200098102909041178.post-11371251877176082532013-07-26T02:52:44.652-04:002013-07-26T02:52:44.652-04:00 Well i see this is an old one.. but i need to ask... Well i see this is an old one.. but i need to ask..<br /><br />Would it be possible to use the hexbridge for positioning of a BLDC motor (using it as a servo).. Most of the gimbal servos is way to small.. Im looking into driving BLDC motors as servos for a CNC machine. Seems to be quite inexpensive compared to ordinary AC Servos.Moronicsmurfhttps://www.blogger.com/profile/15413178123869281013noreply@blogger.comtag:blogger.com,1999:blog-8200098102909041178.post-41210089831506807572013-01-26T11:12:52.144-05:002013-01-26T11:12:52.144-05:00I would always favor galvanic isolation if you hav...I would always favor galvanic isolation if you have room for it on your board, but if not, the 21844 should do an okay job. I've had power stages fail that have killed the 21844 but not the microcontroller.Shane Coltonhttps://www.blogger.com/profile/10603406287033587039noreply@blogger.comtag:blogger.com,1999:blog-8200098102909041178.post-5182121128910114202013-01-26T10:03:09.978-05:002013-01-26T10:03:09.978-05:00Thanks for your answer Shane, in your experience t...Thanks for your answer Shane, in your experience the 21844 is good for circuit protection in case of a failure at power circuit or I should go by galvanic isolation?. Andrésnoreply@blogger.comtag:blogger.com,1999:blog-8200098102909041178.post-72328887301281099242013-01-22T13:47:58.639-05:002013-01-22T13:47:58.639-05:00Hi Andres,
Thank you! I believe the 2184 has only...Hi Andres,<br /><br />Thank you! I believe the 2184 has only one ground for both logic and power (COM), although it does have a level shifter built into the chip so that it can tolerate small transients that cause the grounds to shift with respect to each other. The 21844 has two separate grounds, Vss and COM. In the datasheet, it says they can be as much as +/-5V different from each other. I normally tie them together with a small resistor.Shane Coltonhttps://www.blogger.com/profile/10603406287033587039noreply@blogger.comtag:blogger.com,1999:blog-8200098102909041178.post-56949131923611631272013-01-19T20:06:20.843-05:002013-01-19T20:06:20.843-05:00Hi, I am building a motor controller too but I don...Hi, I am building a motor controller too but I don't have experience with Mosfet IC drivers, I have looked at IRS2184 datasheet but I have doubt with the Grounds, I should understand that the the IC has internal isolate with Vss for logic ground and COM for the power circuit?.<br /><br />Thanks in advance for your answer, by the way, the information on your blog is great!Andrésnoreply@blogger.comtag:blogger.com,1999:blog-8200098102909041178.post-54102430190168000692011-09-28T21:16:26.784-04:002011-09-28T21:16:26.784-04:00Yes, but you would effectively be creating the ESC...Yes, but you would effectively be creating the ESC from scratch. The board is only a power stage and includes none of the sensing and protection circuitry of a commercial ESC. At a minimum, you would need some back EMF sensing circuitry to do sensorless commutation.Shane Coltonhttps://www.blogger.com/profile/10603406287033587039noreply@blogger.comtag:blogger.com,1999:blog-8200098102909041178.post-61541188297542508672011-09-28T03:44:42.885-04:002011-09-28T03:44:42.885-04:00For those of us who don't get bored and theref...For those of us who don't get bored and therefore don't have a need to "scale up," would this Arduino shield be appropriate for running brushless RC car motors without the use of an ESC?Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-8200098102909041178.post-83702304423705002602011-08-03T12:44:06.283-04:002011-08-03T12:44:06.283-04:00I think we are a lot to want it without know how. ...I think we are a lot to want it without know how. do you sell yours ?lr@ekoforce.comhttp://www.ekoforce.comnoreply@blogger.comtag:blogger.com,1999:blog-8200098102909041178.post-26055837203880042692011-04-15T00:14:36.787-04:002011-04-15T00:14:36.787-04:00Thanks. Yes, it is bring-your-own-protection-logic...Thanks. Yes, it is bring-your-own-protection-logic.Shane Coltonhttps://www.blogger.com/profile/10603406287033587039noreply@blogger.comtag:blogger.com,1999:blog-8200098102909041178.post-15372753408195742092011-04-14T00:06:44.546-04:002011-04-14T00:06:44.546-04:00there isn't supervisory circuitry? current and...there isn't supervisory circuitry? current and/or temperature sensing?<br />Anyway: excelent job!About mehttps://www.blogger.com/profile/00380028634248398482noreply@blogger.comtag:blogger.com,1999:blog-8200098102909041178.post-76722425003901264302011-01-05T06:20:37.936-05:002011-01-05T06:20:37.936-05:00Thanks for publishing your work. I'm looking ...Thanks for publishing your work. I'm looking into Arduino-based control for next winter's project and your code/pcb will no doubt save a lot of time. SimonAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-8200098102909041178.post-53445054879037628622010-06-16T13:16:42.079-04:002010-06-16T13:16:42.079-04:00Well Done ShaneWell Done ShaneAOlozagahttps://www.blogger.com/profile/04490084322575194513noreply@blogger.comtag:blogger.com,1999:blog-8200098102909041178.post-35480639961271704992010-06-13T00:18:30.905-04:002010-06-13T00:18:30.905-04:00i want onei want onecHaRlEshttp://www.etotheipiplusone.netnoreply@blogger.com