Timeline for Isolated serial circuit - Works only 1 way
Current License: CC BY-SA 4.0
18 events
| when toggle format | what | by | license | comment | |
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| Jul 24, 2022 at 5:27 | comment | added | PStechPaul | Just saw other answers and comments so the first sentence does not apply. But I still recommend a scope. | |
| Jul 24, 2022 at 5:14 | comment | added | PStechPaul | 6N137 is only rated for operation at 4.5 to 5.5 VDC. Anyone seriously working on electronic designs should have a scope, even a cheap one like the DSO-138 which is less than $30 for the kit. jyetech.com/dso138mini-oscilloscope-diy-kit | |
| Jul 24, 2022 at 4:28 | vote | accept | Satkarni | ||
| Jul 24, 2022 at 4:28 | answer | added | Satkarni | timeline score: 2 | |
| Jul 17, 2022 at 17:59 | comment | added | Math Keeps Me Busy | Probing with a scope is almost always useful when trying to troubleshoot a circuit. Even if a scope probe fails to reveal the source of a problem, it will almost always allow you to narrow the possibilities, and show you parts of a circuit that are working correctly. | |
| Jul 17, 2022 at 17:26 | history | rollback | Andy aka |
Rollback to Revision 2
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| Jul 17, 2022 at 17:25 | comment | added | Andy aka | @Satkarni the answer I gave was valid until you specified that the device used was the "-L" version. You ought to be clearer in your question about this because it wasn't my fault that you didn't specify the correct part. To make it easier, I'm rolling back your question to the previous state. Please edit your question carefully so as not to say my answer was wrong; it was correct at the time it became an answer. | |
| Jul 17, 2022 at 12:00 | history | edited | Satkarni | CC BY-SA 4.0 |
added 186 characters in body
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| Jul 17, 2022 at 11:50 | comment | added | Kartman | You can use your PC's sound card as a crude oscilloscope. What is the receive circuit of CNB? Will it accept a 3V3 signal? | |
| Jul 17, 2022 at 10:57 | review | Close votes | |||
| Aug 1, 2022 at 3:03 | |||||
| Jul 17, 2022 at 10:44 | comment | added | Velvet | Are you possibly exceeding the max output drive current? | |
| Jul 17, 2022 at 10:27 | comment | added | Satkarni | With isolation, also works perfectly fine one way for all baud rates (9600-115200). I am at a loss to get it to work both ways. I have tested this on a breadboard, so layout issue is not relevant. | |
| Jul 17, 2022 at 10:25 | comment | added | Satkarni | Yes. Tested multiple times on multiple laptops, USB ports. Works perfectly fine without isolation. | |
| Jul 17, 2022 at 10:03 | answer | added | Andy aka | timeline score: 2 | |
| Jul 17, 2022 at 10:01 | comment | added | Tim Williams | Circuit seems fine. Show pics of layout? Have you confirmed that communication is functional without isolation? | |
| Jul 17, 2022 at 9:54 | history | edited | winny | CC BY-SA 4.0 |
deleted 3 characters in body
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| S Jul 17, 2022 at 9:50 | review | First questions | |||
| Jul 17, 2022 at 21:16 | |||||
| S Jul 17, 2022 at 9:50 | history | asked | Satkarni | CC BY-SA 4.0 |