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Display Signal K data on Kobo Simple browser ?
#1
I have a couple of waterproof sunlight viewable Kobo Aura H2O e-readers aboard.
They have a built in browser.

I am running the OpenPlotter Distribution (with Signal K server) on a Rpi.

The only SignalK webapp I have found that can be displayed in the Kobo browser is Sailgauge, but it refreshes so often that it is not pretty on the E-Ink display.


I'm wondering if there is a simpler WebApp that might work with the Kobo browser ?
I'd be happy with something that would display SOG, DPT, AWS, AWA as text.

Thanks,
John Middleton.
  Reply
#2
you might be able to use node red dashboard
heading magnetic-vvv-

Code:
[{"id":"1ff3411c.7004df","type":"function","z":"395c257e.b7fe5a","name":"merge values","func":"var paths={};\nvar arrayLength = msg.payload.length;\nfor (var i = 0; i < arrayLength; i++) {\n    paths[msg.payload[i].path]=msg.payload[i].value;\n}\nmsg.payload = paths;\nreturn msg;","outputs":1,"noerr":0,"x":426,"y":297,"wires":[["58879edf.9a3e8","857b6596.1bfd78","3577d5aa.6b9e3a"]]},{"id":"b92fabc3.ddb048","type":"jsonpath","z":"395c257e.b7fe5a","expression":"$.updates..values[*]","split":false,"name":"Signal K delta values","x":232,"y":297,"wires":[["1ff3411c.7004df"]]},{"id":"3577d5aa.6b9e3a","type":"function","z":"395c257e.b7fe5a","name":"compass","func":"var signalk_key=\"navigation.headingMagnetic\";\n\nif(msg.payload.hasOwnProperty(signalk_key)){\n    msg.payload=msg.payload[signalk_key];\n    return msg;\n    \n\n}","outputs":"1","noerr":0,"x":96,"y":358,"wires":[["8f27e020.e1f22"]]},{"id":"8f27e020.e1f22","type":"function","z":"395c257e.b7fe5a","name":"Rad to Deg","func":"var rad = msg.payload;\nvar deg = rad * 180/3.14;\nmsg.payload=deg;\nreturn msg ;","outputs":1,"noerr":0,"x":246.9998779296875,"y":359.9999694824219,"wires":[["11268278.20dc9e"]]},{"id":"b8ca3205.7bead","type":"function","z":"395c257e.b7fe5a","name":"","func":"\nmsg.value=msg.payload;\n\nreturn msg;","outputs":1,"noerr":0,"x":527,"y":358,"wires":[["bf4529ea.43f618","e8389935.e48eb8"]]},{"id":"bf4529ea.43f618","type":"ui_text","z":"395c257e.b7fe5a","group":"4e89a769.12fb98","order":1,"width":0,"height":0,"name":"hm","label":"heading magnetic","format":"{{msg.payload}}","layout":"col-center","x":650,"y":332,"wires":[]},{"id":"e8389935.e48eb8","type":"debug","z":"395c257e.b7fe5a","name":"","active":false,"tosidebar":true,"console":false,"tostatus":false,"complete":"false","x":665,"y":370,"wires":[]},{"id":"11268278.20dc9e","type":"delay","z":"395c257e.b7fe5a","name":"","pauseType":"delay","timeout":"10","timeoutUnits":"seconds","rate":"1","nbRateUnits":"1","rateUnits":"second","randomFirst":"1","randomLast":"5","randomUnits":"seconds","drop":false,"x":397,"y":359,"wires":[["b8ca3205.7bead"]]},{"id":"ff080a0c.710778","type":"websocket in","z":"395c257e.b7fe5a","name":"ws","server":"a3a39a72.edf138","client":"","x":58,"y":297,"wires":[["b92fabc3.ddb048"]]},{"id":"4e89a769.12fb98","type":"ui_group","z":"","name":"test","tab":"c5c13c3.d0f0ac","disp":true,"width":"6","collapse":false},{"id":"a3a39a72.edf138","type":"websocket-listener","z":"","path":"ws://localhost:3000/signalk/v1/stream","wholemsg":"false"},{"id":"c5c13c3.d0f0ac","type":"ui_tab","z":"","name":"test","icon":"dashboard","disabled":false,"hidden":false}]
mare liberum
  Reply
#3
(05-11-2019, 10:47 AM)jim321 Wrote: you might be able to use node red dashboard
heading magnetic-vvv-

Code:
[{"id":"1ff3411c.7004df","type":"function","z":"395c257e.b7fe5a","name":"merge values","func":"var paths={};\nvar arrayLength = msg.payload.length;\nfor (var i = 0; i < arrayLength; i++) {\n    paths[msg.payload[i].path]=msg.payload[i].value;\n}\nmsg.payload = paths;\nreturn msg;","outputs":1,"noerr":0,"x":426,"y":297,"wires":[["58879edf.9a3e8","857b6596.1bfd78","3577d5aa.6b9e3a"]]},{"id":"b92fabc3.ddb048","type":"jsonpath","z":"395c257e.b7fe5a","expression":"$.updates..values[*]","split":false,"name":"Signal K delta values","x":232,"y":297,"wires":[["1ff3411c.7004df"]]},{"id":"3577d5aa.6b9e3a","type":"function","z":"395c257e.b7fe5a","name":"compass","func":"var signalk_key=\"navigation.headingMagnetic\";\n\nif(msg.payload.hasOwnProperty(signalk_key)){\n    msg.payload=msg.payload[signalk_key];\n    return msg;\n    \n\n}","outputs":"1","noerr":0,"x":96,"y":358,"wires":[["8f27e020.e1f22"]]},{"id":"8f27e020.e1f22","type":"function","z":"395c257e.b7fe5a","name":"Rad to Deg","func":"var rad = msg.payload;\nvar deg = rad * 180/3.14;\nmsg.payload=deg;\nreturn msg ;","outputs":1,"noerr":0,"x":246.9998779296875,"y":359.9999694824219,"wires":[["11268278.20dc9e"]]},{"id":"b8ca3205.7bead","type":"function","z":"395c257e.b7fe5a","name":"","func":"\nmsg.value=msg.payload;\n\nreturn msg;","outputs":1,"noerr":0,"x":527,"y":358,"wires":[["bf4529ea.43f618","e8389935.e48eb8"]]},{"id":"bf4529ea.43f618","type":"ui_text","z":"395c257e.b7fe5a","group":"4e89a769.12fb98","order":1,"width":0,"height":0,"name":"hm","label":"heading magnetic","format":"{{msg.payload}}","layout":"col-center","x":650,"y":332,"wires":[]},{"id":"e8389935.e48eb8","type":"debug","z":"395c257e.b7fe5a","name":"","active":false,"tosidebar":true,"console":false,"tostatus":false,"complete":"false","x":665,"y":370,"wires":[]},{"id":"11268278.20dc9e","type":"delay","z":"395c257e.b7fe5a","name":"","pauseType":"delay","timeout":"10","timeoutUnits":"seconds","rate":"1","nbRateUnits":"1","rateUnits":"second","randomFirst":"1","randomLast":"5","randomUnits":"seconds","drop":false,"x":397,"y":359,"wires":[["b8ca3205.7bead"]]},{"id":"ff080a0c.710778","type":"websocket in","z":"395c257e.b7fe5a","name":"ws","server":"a3a39a72.edf138","client":"","x":58,"y":297,"wires":[["b92fabc3.ddb048"]]},{"id":"4e89a769.12fb98","type":"ui_group","z":"","name":"test","tab":"c5c13c3.d0f0ac","disp":true,"width":"6","collapse":false},{"id":"a3a39a72.edf138","type":"websocket-listener","z":"","path":"ws://localhost:3000/signalk/v1/stream","wholemsg":"false"},{"id":"c5c13c3.d0f0ac","type":"ui_tab","z":"","name":"test","icon":"dashboard","disabled":false,"hidden":false}]
[*]

I know nothing about Node Red.

Pasted this into node red, see the flow, how do I get magnetic heading on my browser ?
  Reply
#4
OK, I figured out how to see the output of node red.

But, I don't see the output on the Kobo.
I tried changing the colours, but no joy.
It seems to be refreshing, but nothing is displayed.

It seemed promising, I could see the user interface, just not the output.

I did see the output on Chrome, and IOS, just not the e-ink display Kobo Browser.
  Reply
#5
oh well it was worth a shot..
mare liberum
  Reply


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