stationary SOC from Lexus

[Sx54A]

Hello,

I fail at the very first step of connecting to the existing Wi-Fi. My Wi-Fi password contains numbers, letters, as well as the following special characters: "([*\.

What character set is allowed?

[meatpiHQ]

@Sx54A it should not be a problem, how many characters is your SSID and password?

[Sx54A]

pw is 16 characters ssid is 8 characters

[meatpiHQ]

@Sx54A works ok for me, I used password: Hello12345"([*.

How about your ssid anything special there?

Also what is your wifi encryption, WPA3?

[meatpiHQ]

@Sx54A did you manage to get it to connect?

[Sx54A]

I checked my connections. Created a new Ad-hoc wifi from my mobile with nearly same ssid & pw like may stationary one. --> wican connected. --> its not about the characters. It must be a problem with my stationary wifi hardware.

Because I have a direct connection to meatpi now. I will concentrate on get SOC first. When I find out later, why my Fritzbox Wifi make problems and how to solve, I will update.

[Sx54A]

update:

station wifi network: I think the Fritzbox mesh caused connection problems. Now I created a new wifi-network (only for the meatpi)... set meatpi to AP+station and it works.

Car scanner to meatpi connection: installed car scanner on mobile; connected to wifi ap network of meatpi; setup car sacnner (192.168.80.1) and port (i my case 3333) connection profile: Lexus bZ4X/Solterra/Lexus RZ Press: Connect in the App When I change view to sensors, I get informations... unfortunately SOC and all battery relevant data is (and stays) empty.

But I have a "Hybrid/EV battery pack remaining charge"... with percentage (max was 93%....) I think, this is the SOC. This value I want to get.

So I setup the meatpi mqtt client. I found out (hope I understand right): as long as "MQTT elm327 log is enabled" & Car Scanner is used: all informations will be published by Wican. I can check this by using "mqtt explorer". When I switch off "MQTT elm327 log" I need to define which information has to be published by wican. Otherwise mqtt explorer only recieves: status = online

Now: How to get specific sensor information (car scanner found & displayed) published by Wican?

-> If I have a sensor in "car scanner" like "Hybrid/EV battery pack remaining charge" how can I get this information published by mqtt?

[meatpiHQ]

@Sx54A

But I have a "Hybrid/EV battery pack remaining charge"... with percentage (max was 93%....) I think, this is the SOC. This value I want to get.

You might be lucky! Try to request PID 91.

Now: How to get specific sensor information (car scanner found & displayed) published by Wican?

Pressing on a specific sensor doesn't work?

If I have a sensor in "car scanner" like "Hybrid/EV battery pack remaining charge" how can I get this information published by mqtt?

Sorry I'm not sure I understand your question. Like you mentioned enable MQTT elm327 logging...

[Sx54A]

I'm trying to express myself clearly (not a native English speaker, sorry): I searched for the term "Hybrid/EV battery pack remaining charge" in the OBD2 calculator and got PID91 as a result. I now have to somehow process this information and enter it into Wican.

As I understand it, I enter in the line what WiCan is supposed to SEND. So I take the 'Response' information from the calculator:"

From that, I now take the '2024'. Name: I can think of any one. Lets take "BatterySOC" PID: is 91

Start Bit: how to get this information? (I take 0 because I saw it often) End Bit: how to get this information? (I take 1 because I saw it often)

Expression: this is, how to calculate - can I take it from the OBD2Calculator, too? In my case it could be 0+1/2.55+12 ... 12 seems to be a value (an example) --> I take: 0+1/2.55+V

With all information I get this:

And now, either through the MQTT Explorer or via ioBroker or any other home automation system, I can send a message to WiCAN, and WiCAN will return the batterySOC status to me via MQTT, correct? As soon as I have set up WiCAN properly, I'll inquire about how to make that request.

[meatpiHQ]

@Sx54A

An example of the mqtt frames is mentioned in the readme: https://github.com/meatpiHQ/wican-fw/tree/3bb50a431f4812e1a0c3c1604e29e036c89245e3?tab=readme-ov-file#6-request-battery-soc-mqtt-example

Expression: this is, how to calculate - can I take it from the OBD2Calculator, too? In my case it could be 0+1/2.55+12 ... 12 seems to be a value (an example) --> I take: 0+1/2.55+V

I suggest you use B instead of V to reference the Byte, so the expression should be: B3/2.55 If you use B you can ignore the "start bit" and the "bit length"

[Sx54A]

If I change the letter V into a B I get: 0+1/2.55+B

In your expression, where did you get the "3" from? And how do you know, that it should look like B3/2.55?

[meatpiHQ]

@Sx54A In the PID response byte 3 holds the values that you want. In your example B3=12

If you want to use V, the you have to set then "start bit: 24 and bit length: 8", then your expression will be V/2.55

0+1/2.55+V

This expression is incorrect, in your example it's calculated as (1/2.55) * 12

[Sx54A]

Ok, I see my mistake in the calculation.Thanks.

You wrote: "If you want to use V, the you have to set then "start bit: 24 and bit length: 8", then your expression will be V/2.55"

I I try to save the new created line without setting start bit & bit lenght, it doesn`t work --> It look, that I need these startbit&bit lenght.

Can I use these ones (I can´t find your "start bit 24"):

[meatpiHQ]

@Sx54A use any values for start bit and length, it will be ignored.

[Sx54A]

ok. So I will go with "B".

And if I have more than one byte? In this picture its "12" and "34". How should I proceed here to get 3106?

[Sx54A]

ok, short update:

I found out, that I get nearly all values with the car scanner only, if the car is "ready" (toyota owners knows what I mean)... its equivalent to "ignition on". When I switch the car of, Car scanner only shows "OBD Module Voltage" and "Current time". Disappointing. I did not expect, that mqtt will deliver more when car is switched off.