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Hi!
For an airpressure chart, I would need the local time (the time of the raspberry pi, no nmea sequences with a time string available ).
How can the internal raspberry pi time be published in OP?
Martin
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2017-09-11, 11:53 AM
(This post was last modified: 2017-09-11, 11:56 AM by PaddyB.)
(2017-09-11, 10:31 AM)Alpenskipper Wrote: Hi!
For an airpressure chart, I would need the local time (the time of the raspberry pi, no nmea sequences with a time string available ).
How can the internal raspberry pi time be published in OP?
Martin
Node red has a chart node which does all that for you.
Something like...(The limit node would be better set to something like 1 per minute)
Code: [
{
"id": "747c2583.7cc55c",
"type": "websocket in",
"z": "c9b82bf0.2e8e78",
"name": "SignalK input",
"server": "d4503be4.7ab258",
"client": "",
"x": 130,
"y": 80,
"wires": [
[
"f40c5860.801988"
]
]
},
{
"id": "f40c5860.801988",
"type": "json",
"z": "c9b82bf0.2e8e78",
"name": "",
"pretty": false,
"x": 250,
"y": 120,
"wires": [
[
"97e64833.127fa8"
]
]
},
{
"id": "97e64833.127fa8",
"type": "switch",
"z": "c9b82bf0.2e8e78",
"name": "Is it Met data?",
"property": "payload.updates.\"$source\"",
"propertyType": "jsonata",
"rules": [
{
"t": "eq",
"v": "OPsensors.I2C.BMP180",
"vt": "str"
}
],
"checkall": "false",
"outputs": 1,
"x": 360,
"y": 200,
"wires": [
[
"33642b2d.aa92d4"
]
]
},
{
"id": "33642b2d.aa92d4",
"type": "change",
"z": "c9b82bf0.2e8e78",
"name": "create msg.presure",
"rules": [
{
"t": "set",
"p": "payload",
"pt": "msg",
"to": "msg.payload.updates.values[path=\"environment.outside.pressure\"].$round(value)/100",
"tot": "jsonata"
}
],
"action": "",
"property": "",
"from": "",
"to": "",
"reg": false,
"x": 330,
"y": 300,
"wires": [
[
"f47dd59d.508d18",
"2e555623.d43aba",
"ba9d42d3.142ae"
]
]
},
{
"id": "f47dd59d.508d18",
"type": "delay",
"z": "c9b82bf0.2e8e78",
"name": "",
"pauseType": "rate",
"timeout": "5",
"timeoutUnits": "seconds",
"rate": "1",
"nbRateUnits": "1",
"rateUnits": "second",
"randomFirst": "1",
"randomLast": "5",
"randomUnits": "seconds",
"drop": true,
"x": 510,
"y": 260,
"wires": [
[
"1e715698.7829e9"
]
]
},
{
"id": "1e715698.7829e9",
"type": "ui_text",
"z": "c9b82bf0.2e8e78",
"group": "78fc673a.a74ed8",
"order": 0,
"width": 0,
"height": 0,
"name": "Pressure",
"label": "Pressure",
"format": "{{msg.payload}}",
"layout": "row-spread",
"x": 660,
"y": 200,
"wires": []
},
{
"id": "2e555623.d43aba",
"type": "debug",
"z": "c9b82bf0.2e8e78",
"name": "",
"active": true,
"console": "false",
"complete": "false",
"x": 490,
"y": 380,
"wires": []
},
{
"id": "ba9d42d3.142ae",
"type": "delay",
"z": "c9b82bf0.2e8e78",
"name": "",
"pauseType": "rate",
"timeout": "5",
"timeoutUnits": "seconds",
"rate": "1",
"nbRateUnits": "1",
"rateUnits": "second",
"randomFirst": "1",
"randomLast": "5",
"randomUnits": "seconds",
"drop": true,
"x": 550,
"y": 300,
"wires": [
[
"6d0fb71d.7c2098"
]
]
},
{
"id": "6d0fb71d.7c2098",
"type": "ui_chart",
"z": "c9b82bf0.2e8e78",
"name": "",
"group": "78fc673a.a74ed8",
"order": 0,
"width": 0,
"height": 0,
"label": "chart",
"chartType": "line",
"legend": "false",
"xformat": "HH:mm:ss",
"interpolate": "linear",
"nodata": "",
"dot": false,
"ymin": "",
"ymax": "",
"removeOlder": 1,
"removeOlderPoints": "",
"removeOlderUnit": "3600",
"cutout": 0,
"colors": [
"#1f77b4",
"#aec7e8",
"#ff7f0e",
"#2ca02c",
"#98df8a",
"#d62728",
"#ff9896",
"#9467bd",
"#c5b0d5"
],
"x": 720,
"y": 320,
"wires": [
[],
[]
]
},
{
"id": "d4503be4.7ab258",
"type": "websocket-listener",
"z": "",
"path": "ws://localhost:3000/signalk/v1/stream",
"wholemsg": "false"
},
{
"id": "78fc673a.a74ed8",
"type": "ui_group",
"z": "",
"name": "Gauges",
"tab": "2b930b0f.158ef4",
"disp": true,
"width": "6"
},
{
"id": "2b930b0f.158ef4",
"type": "ui_tab",
"z": "",
"name": "Gauges",
"icon": "dashboard",
"order": 1
}
]
Posts: 176
Threads: 44
Joined: Mar 2016
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Hi PaddyB,
Thank you for pointing me in the direction of node red. As I am more a sailor than a IT technician :-) , I never used node red before and I guess, I won't be capable to use it.
I use OP mostly for remote monitoring my boat, when I am at home. I only have a GSM net, so I can't forward ports.
Data is transmitted via MQTT and displayed in an freeboard dashboard. That seemed the easiest way until now.
A timestamp would be useful for serveral things.
Martin
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