rusefi.com

How do we get data from rusEFI driving around the track?

A while back I've tried RS232 radio modems and it was a failure https://rusefi.com/forum/viewtopic.php?p=45138#p45138

Should it be 4G in 2022? Or something else?
Probably not a sim card inside the ECU, probably an external module?
Is there anything off the shelf?
Linux talking to 4G modem or ESP32 or else?
I am already afraid of SD card holders and corrupted SD cards and RO file systems see https://rusefi.com/forum/viewtopic.php?p=45138#p45138 is there a better way?

PS: if external device what protocol shall external device talk to rusEFI? SPI? CAN? USB? please not RS232. Ethernet?

SBC with CAN and industrial range https://www.digi.com/products/models/cc-sb-wmx-l87c-n or CC-SB-WMX-J97C-N $450 no stock do not like

I use https://www.autosportlabs.com/ and it works very well. Talks to the ECU over CAN. Even has a preset for rusEFI!

Do they have any uplink and remote app?

AndreyB wrote: ↑

Sun May 22, 2022 11:25 pm

Do they have any uplink and remote app?

What do you mean uplink and remote app? They have a website that you can look at live telemetry (and lap timing data): https://podium.live/events/ldrl-2022-04-24-ridge-sun-8-hour/device/happy-cactus-240

Whst is the workflow? Can to sutosports to 4g or wifi?

NRF24 with external antenna. I had easy 300 meter through concrete.

AndreyB wrote: ↑

Sun May 22, 2022 11:33 pm

Whst is the workflow? Can to sutosports to 4g or wifi?

Correct. It has a GPS/accelerometer/etc, and talks to the ECU over CAN.

In my case, I have an rpi acting as the dashboard for the car connected to the Racecapture over USB.

The Racecapture then uploads telemetry either over WiFi to a wifi hotspot in the car, or directly with the internal cellular modem on the models that have that.

Good, which means that there is totally no sense in making any rusEFI hardware for telemetry. Pretty much only thing to play with is see what we can do with an Android app talking to rusEFI for cheap and ugly alternative.

Big problemt with the Autosport stuff is I haven't seen any stock anywhere

I've been thinking (but I only think in Arduino) to use two Arduino to do CAN->LoRa sender->LoRa reciever-> RS232 on PC lol since it's the only thing I know how to use.
Doing it should be simple enough but user interface is hard

I think a more budget-friendly option would be welcome, even if it's a slower bitrate, it should be enough to at least give a pit crew a general idea of what's happening with the car

NormanAlphaspeed wrote: ↑

Mon May 23, 2022 9:46 pm

RS232 on PC

RS232 is poison of packet loss and sad retries. USB, CAN and Ethernet are all smarter in terms of ACK and retry.

At the moment my open questions are https://forum.xda-developers.com/t/eli5-canbus-android-development.4448965/

I got two LoRa modules communicating, gonna be doing a range test before diving deeper. Will report with any progress

Range seems to be pretty good
I tested speed and it seems suitable for basic datalogging; will do car tests later down the line