树莓派Node-Red例4:dashboard slider PWM控制LED亮度

流程图:

 网页UI图:( 新建网页,在地址栏输入 http://172.16.0.12:1880/ui)

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	"disabled": false,
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	"type": "ui_slider",
	"z": "436c74b2.977a3c",
	"name": "PWM控制LED",
	"label": "PWM",
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	"passthru": true,
	"outs": "all",
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	"min": 0,
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	"wires": [
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}, {
	"id": "53d08057.6fc3a",
	"type": "rpi-gpio out",
	"z": "436c74b2.977a3c",
	"name": "",
	"pin": "37",
	"set": "",
	"level": "0",
	"freq": "100",
	"out": "pwm",
	"x": 580,
	"y": 200,
	"wires": []
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	"label": "PWM",
	"format": "{{msg.payload}}",
	"layout": "col-center",
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	"wires": []
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	"type": "ui_group",
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	"type": "ui_tab",
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	"icon": "dashboard"
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