MMM-Navigate, Navigation inside MagicMirror with Rotary Encoder

Eisblume

@AxLed
Do not think that I am lying ;-), but it works fine, when I start MagicMirror and after that I start the python - script from here https://github.com/martinohanlon/KY040.

cw, cww and press works absolutely fine.

It is very strange.

Eisblume

@AxLed
Ok, i fix it now for me.

I know, it is a dirty code, but don’t found another solution :dizzy_face:

I attached the KY040 python script in the node_helper.js. Then everything works fine.

//node_helper.js
/* Magic Mirror
 * Node Helper: {MMM-Navigate}
 *
 * By {AxLED}
 * {MIT} Licensed.
 */

 //Debugging
 //tail -f ~/.pm2/logs/mm-out-0.log
 //tail -f ~/.pm2/logs/mm-error-0.log 

const Gpio = require('onoff').Gpio;
...
const spawn = require("child_process").spawn;
//Variables
...
  start: function() {
		var self = this;
		this.loaded = false;
		var process = spawn("python", ["/home/pi/Downloads/KY040/examples/python3.py"]);
	},
	
...
});

AxLed

@Eisblume
No Problem, i am glad it works for you now, so you also did your first coding experiance.

AxLED

Eisblume

@AxLed
Yes very interesting experiences :-) !

Could you explain my how to start “Tagesschau in 100 Sekunden” in MMM-Navigate ??

AxLed

@Eisblume
You need two things:

first: a modules which is able to stream 100Sec Tagesschau, i made a fork see MMM-Podcast2
second: the right config (i posting only the relevant part)

....
{
			module: 'MMM-Podcast2',
			config: {
				// See 'Configuration options' for more information.
				omxargs: ' --win 0,0,1920,1080  -o both '
			}
		},
{
			module: "MMM-Navigate",
			header: "Navigation",
			position: "top_right",
			config: {
					Alias: [
						'Tagesschau 100 Sekunden',
						'Herunterfahren'
					],
					Action: [
						{notification:'BUTTON_PRESSED',payload:''},
						{notification: "REMOTE_ACTION", payload: {action: "SHUTDOWN"}}
					],
					GPIOPins: [26,20,19]//rotary cw, rotary ccw, rotary press (BCM Numbering)
					},
		},
...

AxLED

Eisblume

@AxLed said in MMM-Navigate, Navigation inside MagicMirror with Rotary Encoder:

{notification:‘BUTTON_PRESSED’,payload:‘’},

Thanks. Works perfect !!!

keineAhnung123

Hello @AxLed ,

Two things:

First

I have the same issue like @Eisblume :

The click doesnt work.
When i then start a sample code to test the rotary encoder (from like here), the click works in the sample code.
If i start the Magic Mirror after that again, then the click works there too.

Maybe there is a missing initialization of the rotary encoder in your code?

Second

Is there a possibility to get more config possibilities?
Like starting the module hidden or shortening the time of the hiding process?

Thanks in advance :)

AxLed

@keineAhnung123,

to your first issue:

is only click not working or is rotation also not working?
Because rotation and click (Button press) uses the same library (onOff).
on which pin is click connected, as the pi GPIO Pins have different features?
what versions you are using (pi, OS, MM-Version)?

To your second issue.

MMM-Navigate uses the MM notification system, so you can do almost everything you want. What are you trying to to, maybe i can give you a sample for your config.js
for shortening time of hidding see MM Docs -> search for hide, there is a parameter for speed.

Regards

AxLED

keineAhnung123

Hello @AxLed , thanks for your reply

first

rotation works fine but the button press does not
i use your standard configuration so it seems to be BCM 19
PI 3 B+, stretch, MM 2.14.0

I tried MMM-Buttons too. Same problem there. I first have to run a sample script with python and after that the button works in MM too. It uses the onoff library too.

I found a strange behaviour:
I start MM -> button click doesnt work
I start python test script and after that MM -> button click works
When i restart the Raspberry PI and start MM (without the python test script) -> button click works
When i shutdown the Raspberry PI and cut off the connection to an electricity source and restart the PI after that -> button click doesnt work

Thats strange isnt it?

second

I changed the hiding time from 10000 to 2000 cause i prefer a shorter time.
Is there a way to start the module hidden?
I tried following:

    // Define start sequence.

    start: function() {

        Log.info("Starting module: " + this.name);

        this.sendConfig();//pass config to node_helper.js

        this.hide();

    },

and this

    //Helper, to use module without Rotary Encoder and without GPIO Pins, like developing in Pixel VM

    notificationReceived: function(notification, payload) {

        if(notification === "CW" || notification === "CCW" || notification === "PRESSED"){

            this.naviaction({inputtype: ""+ notification +""});

        }

        if(notification === "SHELLCOMMAND"){

             this.sendSocketNotification(notification, payload);

        } 

        if(notification === "MODULE_DOM_CREATED"){

             this.hide();

        }

    },

but both didnt take effect :(

third

I found an reproducable error:
When i start MM and first rotate counterclockwise there is an error in the MM console:

[09.01.2021 09:11.07.337] [LOG]   MMM-Navigate, listen on GPIO PINs (BCM): 26,20,19

[09.01.2021 09:11.18.306] [ERROR] Whoops! There was an uncaught exception...
[09.01.2021 09:11.18.321] [ERROR] ReferenceError: lastdir is not defined
    at tick (/home/pi/MagicMirror/modules/MMM-Navigate/node_helper.js:92:39)
    at /home/pi/MagicMirror/modules/MMM-Navigate/node_helper.js:66:4
    at /home/pi/MagicMirror/modules/MMM-Navigate/node_modules/onoff/onoff.js:135:9
    at Array.forEach (<anonymous>)
    at pollerEventHandler (/home/pi/MagicMirror/modules/MMM-Navigate/node_modules/onoff/onoff.js:134:32)

It doesnt effect the functionality but just wanted to mention it… ;)

AxLed

@keineAhnung123,

thanks for feedback.
first:
Idea A:

maybe the pin 19 is the problem, because it is not only a GPIO pin rather it has SPI features. Can you change to BCM16 (and change it in config.js as well) and try it?

Idea B:

Do you use capacitors for debouncing? If not, you can change debouncing value of following line: https://github.com/Ax-LED/MMM-Navigate/blob/master/node_helper.js#L37

second:

Which module should start hidden? MMM-Navigate?

third:
I tried to reproduce on my pi 3 and get no error, so i checked the code.
You can add following line as new line 19 in node_helper.js
var lastdir = '';

AxLED