Timeline for Powering LED from a CAN bus signal
Current License: CC BY-SA 4.0
5 events
| when toggle format | what | by | license | comment | |
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| May 5, 2024 at 14:13 | comment | added | Justme | @ToreanPW You could design something that can receive CAN out of FETs, but that is why ICs like CAN transceivers, comparators, opamps, or other ICs exist - so that you don't need to design the hardest part yourself. | |
| May 5, 2024 at 14:04 | comment | added | ToreanPW | Would a mosfet be able to do the job. Can high and low rest at 2.5 volt and high is raised to 3.5 and low is dropped the 1.5 when there is a data packet. I want the lights to come on when there is a packet ideally. If a p and a n type mosfet exist with the correct voltage threshold could they be used with out providing a path to ground dropping the network voltage? If so what would a wiring diagram look like. If not could it be wired to just light the led with any voltage to indicate there is some amount of voltage. | |
| May 5, 2024 at 8:11 | comment | added | Justme | @ToreanPW Well the last thing you want is to damage something by putting LEDs on buses directly. If you want a proper tool then make a proper tool that does not load the probed signals. Which means, you need to know what you can put there and what voltage levels are used, in order to make a reciver/buffer for that wire or bus, and drive LEDs through that buffer. | |
| May 4, 2024 at 22:51 | comment | added | ToreanPW | All of the CAN bus interface chips I have seen (very quick google search) only have 1 receive output. I was hoping to have an led per pin of the obd2 connector, minus the 2 grounds. I have LEDs for all unused pins so if they are used in the future I can add them in. The 12v I am assuming is the easy one to do. Thank you for your response. You are right I would like to do it right but it has to obtainable and doable for me. | |
| May 4, 2024 at 21:59 | history | answered | Justme | CC BY-SA 4.0 |