Questions tagged [lin]
LIN (Local Interconnect Network) is a serial network protocol used for communication between components in vehicles. It is a single wire, serial network protocol.
33 questions
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Reverse engineering of Mercedes S-Class rear seat fans part 2: how to correctly send data through DC-LIN?
First part of the research here. Some news about the progress of my research: the fan is running! Well, almost. This fan operates on DC-LIN or LIN over Powerline Communication. So I built an ...
1 vote
1 answer
57 views
LIN Transceiver sink current
In this LIN Transceiver, the RXD pin requires an external pull-up. For LIN, I need 2.2k pull-up on the RXD line for proper operation. If I pull-up the 2.2k to 3.3V, the maximum sink current through ...
-1 votes
1 answer
112 views
Converting RS485 to TTL and then to LIN
Is it possible to convert an RS485 signal to TTL and then to LIN without using microcontroller?
2 votes
1 answer
255 views
Linear to log opamp transisor setup
I'm making a VCO for use as a module in a synth. The oscillator part is working fine. I also need to translate a 1v/oct voltage input to a log scaled voltage output in order to get the correct freq ...
0 votes
2 answers
1k views
Powering LED from a CAN bus signal
I am looking for a can it be done and, if someone is willing, a how to. I am building an OBD2 breakout box for easily scoping automotive computer data lines and want to add LEDs as a quick visual of ...
0 votes
1 answer
71 views
Is There a Mandatory Relationship Between PID and Data Length in LIN Communication Protocols?
In numerous articles by IC manufacturers and measurement device makers, I've encountered references to LIN PID indicating the expected length of data bytes in the response. ...
1 vote
1 answer
210 views
STM32 UART in LIN mode sends with incorrect baudrate but not in asynchronous mode
I am using the UART of an STM32F103C8T6. When selecting the Asynchronous mode via the CubeMX everything works fine using either of the functions ...
2 votes
3 answers
463 views
Ferrite bead value for a LIN bus protection circuit
What is the proper value for FB1 in relation to the surrounding capacitors in this diagram? The FB1 resistance is measured to 0.76ohm and package size is 0603. All components are AEC-Q200 rated. The ...
2 votes
1 answer
629 views
LIN BUS - why 50 mΩ in series?
I can see there is 50 mΩ in LIN bus with LIN ICs. But I don't understand why it is there. Does anyone have an idea why I see 50 mΩ in the bus line?
0 votes
2 answers
935 views
When is LIN used over I2C?
I am doing research about some communication protocols: CAN, LIN, I2C, and how they're used mainly in the automotive industry but I'm getting confused as to when each of them are used and if their use ...
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147 views
How to send 13 bit LIN (Local Interconnect Network ) Break?
I use MC9S08DZ96 MCU (NXP). I wrote the corresponding registers to create a break at the beginning of the data LIN frame. The data frame is sent correctly, but the problem is that the break part is ...
1 vote
1 answer
328 views
LIN interface INH pin
What would happen if I pull down the INH pin of this IC to GND? I am unable to understand what would happen if I pulled to GND or make it HIGH? Can someone help me ?
1 vote
2 answers
201 views
Horrible buzzing on custom car bluetooth
I've got an older vehicle that is wired for a CD changer. I'm using a few components to trick it into playing Bluetooth. Components MCP2025 Transceiver for car's LIN bus Regulates voltage (>12V ...
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2 answers
2k views
Pullup resistor for automotive protocol like CAN and LIN
I understand that how open collector works on protocol like I2C. However, from my understanding, the automotive protocols like CAN and LIN also use open collector to talk to other devices. LIN is ...
0 votes
1 answer
221 views
LIN transceiver instability problem
I'm using the MCP2021A for my project. In this component, there is a voltage regulator but I have no use for it. They usually power microcontroller like the PIC18F2455 but I'm using a Raspberry Pi ...