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Very impressive. Thank you very much sir!
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Nice work Craig. Really appreciate the knowledge and wisdom.Comment
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Craig
Those last three posts of yours are perfect.
Most people would not do what you have done here.
This way anybody that can handle a soldering iron (very small tip) can build one for them self.
LarryPast NAMBA- P Mono -1 Mile Race Record holder
Past NAMBA- P Sport -1 Mile Race Record holder
Bump & Grind Racing Props -We Like Em Smooth & WetComment
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I was thinking: Give a man a fish, he eats a meal. Teach a man to fish, he eats for life! First one is the hardest, then they roll from there! If I can answer questions just post them here. I’ll post some pics of the tools I used. Thanks Larry!Comment
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Thanks Craig. Very cool reading. I might just make a few.
Nortavlag Bulc Comment
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Guys, hold off on the Opto Board builds! I’m testing with my Tactic TR325 receiver and it won’t drive the opto input... it only has 20mA of loading, so I’m pretty surprised! It did work on my FlySky setup. In any regards, this can’t be a flakey design, so I need to come up with some buffering. I’ll let you know when I find a solution...Comment
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Playing hooky from work, a benefit of working from home! I removed the 2, 232 Ohm resistors on the input and replaced with a 1.00K, same as the output resistor. That had a very insignificant impact on the timing throughput, so its a good solution. I’ll have to update the schematics. Looks like there is no need to drive the input that hard. Note, the optoisolators are a Panasonic part, known for high quality. If you use something else, there may not be enough gain across the device and it won’t work the same. I removed the posts with the wrong values to avoid confusion and unclutter the thread.Comment
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Problem resolved on the Opto Boards. I deleted one resistor and changed the value of the other to match the resistor used on the output. This reduced the Parts List by one component. Here is the schematic and board shots for the Single Motor Opto Board. Note: I didn't re-shoot the pics, so they still show two resistors on the input side.Last edited by CraigP; 01-25-2018, 11:33 AM. Reason: Schematic still had errors, put in new version.Comment
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Here is the 1 Input, 2 Motor Opto Board...Last edited by CraigP; 01-25-2018, 11:35 AM. Reason: Schematic still had errors, inserted a new versionComment
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Here is the 2 Input, 2 Motor Opto Board...Last edited by CraigP; 01-25-2018, 11:40 AM. Reason: Schematic still had errors, inserted a new versionComment
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Thank you very much for the work you do.
Today I try to start assembling a circuit.
*!** The previous one tries to desoldar the resistances in parallel that add them ... but an attack of little patience ended up throwing it in the trash basket ... it worked too, like ?, I still do not know.
I try to assemble and test with a futaba tx and comment.
Greetings.
HernanComment
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Did you see the new schematics? You need to increase the series resistor and take off the parallel resistor. Try the values on the schematic, 1K Ohm. This works with Panasonic PS2501, but don’t know if it will work with 4N25. I need your help to verify that. Can you do that and report?Comment
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Craig,
I just tried it on the breadboard and the ESC does not work. TX / RX turnigy / flysky, optp 4N35, 1k resistors
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Invert the signal and ground wires at the output. Remaining the first circutito that I present. And it worked!
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