@abandonware/htu21d-i2c 中文文档教程
node-htu21d
使用节点从 HTU21D 传感器读取温度和湿度
HTU21D
HTU21D-F 传感器使用 I2C 接口测量温度和湿度。 用于开发和测试的分线板是 Adafruit HTU21D-F 连接到 运行 Raspian 的 Raspberry Pi。
Enable i2c on a Raspberry Pi
请务必启用对 i2c 的支持并安装 i2c 工具。 Adafruit 有一个 教程 覆盖这个。 我建议在最后添加一个步骤,以便可以使用 i2c 没有须藤。 此步骤将用户 pi 添加到 i2c 组。 注销并登录 回来使它生效。
$ sudo usermod -a -G i2c pi
Install node.js on a Raspberry Pi
Raspian 存储库中的 node.js 包太旧,无法与此模块一起使用。 Adafruit 有另一个优秀的页面显示 如何安装最新的 node.js 版本 在圆周率上。
Install this module
$ npm install @abandonware/htu21d-i2c
Usage
var i2c_htu21d = require('@abandonware/htu21d-i2c');
// If using a Raspberry Pi, do not specify the i2c device name.
// The correct name will be used based on the board revision.
// Older boards use /dev/i2c-0, newer ones use /dev/i2c-1.
// If using any other board, specify the device name.
// For example: i2c_htu21d({device: '/dev/i2c-1/'});
var htu21df = new i2c_htu21d();
htu21df.readTemperature(function (err, temp) {
if (!err) { console.log('Temperature, C:', temp); }
htu21df.readHumidity(function (err, humidity) {
if (!err) { console.log('Humidity, RH %:', humidity); }
});
});
node.js v0.12.0
这适用于当前版本的 i2c (0.2.1) 和节点 0.12.0。 如果使用 旧版本的节点,使用 i2c@0.1.8。
License
MIT 许可证 (MIT)
版权所有 (c) 2015 bbx10node@gmail.com
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上述版权声明和本许可声明应包含在所有 软件的副本或重要部分。
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node-htu21d
Read temperature and humidity from an HTU21D sensor using node
HTU21D
The HTU21D-F sensor measures temperature and humidity using an I2C interface. The breakout board used for development and testing is the Adafruit HTU21D-F connected to a Raspberry Pi running Raspian.
Enable i2c on a Raspberry Pi
Be sure to enable support for i2c and install the i2c tools. Adafruit has a tutorial covering this. I suggest adding one more step at the end so i2c can be used without sudo. This step adds the user pi to the i2c group. Logout and log back in to make this take effect.
$ sudo usermod -a -G i2c pi
Install node.js on a Raspberry Pi
The node.js package in the Raspian repo is too old be used with this module. Adafruit has another excellent page showing how to install the latest node.js version on the Pi.
Install this module
$ npm install @abandonware/htu21d-i2c
Usage
var i2c_htu21d = require('@abandonware/htu21d-i2c');
// If using a Raspberry Pi, do not specify the i2c device name.
// The correct name will be used based on the board revision.
// Older boards use /dev/i2c-0, newer ones use /dev/i2c-1.
// If using any other board, specify the device name.
// For example: i2c_htu21d({device: '/dev/i2c-1/'});
var htu21df = new i2c_htu21d();
htu21df.readTemperature(function (err, temp) {
if (!err) { console.log('Temperature, C:', temp); }
htu21df.readHumidity(function (err, humidity) {
if (!err) { console.log('Humidity, RH %:', humidity); }
});
});
node.js v0.12.0
This works with the current version of i2c (0.2.1) and node 0.12.0. If using an older version of node, use i2c@0.1.8.
License
The MIT License (MIT)
Copyright (c) 2015 bbx10node@gmail.com
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.