Vehicle speed with the PCAN-MicroMod Digital

[Edouard]

Dear Forum,

I am quite new with such device and I am getting difficulties to set the PCAN-MicroMod Digital device to read the speed from our Toyota Hiace Van and transmit it ideally in TTL format.
https://www.peak-system.com/PCAN-MicroM ... .html?&L=2

Did I wrongly chose the Can converter ?

Thanks for your help ^^

Edo

[M.Maidhof]

Hello,

the MicroMod digital modules are available with high-side or low-side drivers, but they don't support a direct ttl output. Which signal do you need on the ttl side (PWM, frequency output, digital)?

regards

Michael

[Edouard]

Hello Michael,

Many thanks for your reply ^^

We need to get the vehicle speed under a TTL signal which should change when the vehicle speed is changing.

From this table: http://opengarages.org/index.php/Toyota_CAN_ID, it seems that CAN-ID (0B4) is the right signal to take and convert it as TTL signal.

So I am stuck on how to do it

Thansk again for your help

Edo

[M.Maidhof]

Hi,

as written before the MicroMod digital modules don't offer a direct TTL output, they only offer "Low Side" or "High-Side" outputs.

Next, to convert a CAN signal to a "ttl" signal, you must convert it in a way that the signal information is still available in the converted signal (PWM, Frequency?). So how should your ttl signal looks like after the conversion?

regards

Michael

[Edouard]

Hello Michael,

I understand that I need to place a conveter, between the Micromod digital module and my final device.

My final device is expecting as the attached print screen

2020-08-24_132607.png (241.83 KiB) Viewed 6587 times

Hope this is clear ?

Thanks
Edo

[M.Maidhof]

Hi,

the MicroMod modules don't offer a phase shifting ouput with the default firmware. So you have to build an own firmware for the module to handle that special feature, or use a different device which could handle CAN to phase shifting.

regards

Michael

[Edouard]

This phase shifting is not mandatory but this is noted that with a specific firmware, this is possible.

So my question is how to get only one TTL output ?

Or alternatively, what other device can I use ?

[M.Maidhof]

Hi,

you can use the frequency output of the MicroMod digital, and map the CAN signal to the frequency output using the MicroMod Config tool. Here an example for using the frequency output for CAN ID 0x100 Byte 2 Bit0-7:

Frequency_output.JPG (76.98 KiB) Viewed 6582 times

You have to modify this to your CAN ID and data bytes of your vehicle speed signal of your CAN bus.

regards

Michael

[Edouard]

I will give a try ^^

Thanks a lot for your assistance

Edo