一、硬件
- esp8266模块 ×1
- DHT11模块 ×1
- usb转ttl模块 ×1
- 杜邦线若干
二、软件
三、实现步骤
1、esp8266模块刷nodemcu固件
参见：http://www.bigiot.net/help/20.html
2、接线
DHT11模块 DATA针脚接esp8266 的GPIO2，其他也可以（针脚索引对照表参见：http://www.bigiot.net/talk/37.html）
3、写入代码
pin = 4
tmr.alarm(1, 5000, 1, function()
status, temp, humi, temp_dec, humi_dec = dht.read(pin)
if status == dht.OK then
print("DHT Temperature:"..temp..";".."Humidity:"..humi)
elseif status == dht.ERROR_CHECKSUM then
print( "DHT Checksum error." )
elseif status == dht.ERROR_TIMEOUT then
print( "DHT timed out." )
end
end)
tmr.alarm(1, 5000, 1, function()
status, temp, humi, temp_dec, humi_dec = dht.read(pin)
if status == dht.OK then
print("DHT Temperature:"..temp..";".."Humidity:"..humi)
elseif status == dht.ERROR_CHECKSUM then
print( "DHT Checksum error." )
elseif status == dht.ERROR_TIMEOUT then
print( "DHT timed out." )
end
end)
4、运行界面如下
NodeMCU的dht模块更多用发参见官方文档：http://nodemcu.readthedocs.io/en/dev/en/modules/dht/
稍后添加对接贝壳物联，上传实时数据并保存历史数据......
评论：共7条
xianruiqi 评论于：2017-05-24
15:33:55
这个的后续程序能给下嘛？对于写lua程序登陆贝壳物联还是有点心有余而力不足的。@贝壳物联
贝壳物联
回复于：2017-05-24 18:06:37
回复 @xianruiqi:lua登录贝壳物联可以参考https://www.bigiot.net/help/20.html
长安爱玉兰
回复于：2020-01-28 00:11:04
回复 @贝壳物联:我想知道温湿度如何能同时上传到两个数据接口的程序，那儿不会，能给下后面给我看看吗@贝壳物联
木人泪 评论于：2017-06-11
11:21:12
上传实时数据的程序成功没
levid 评论于：2020-03-26
21:38:14
Not connected to comm port
Connected to COM5 at 9600 baud
0倊??揜??OAE抏圑O7E掋翃
捽萨
NodeMCU custom build by frightanic.com
branch: master
commit: c8037568571edb5c568c2f8231e4f8ce0683b883
SSL: false
modules: adc,cjson,dht,enduser_setup,file,gpio,hx711,net,node,pwm,tmr,uart,wifi
build built on: 2016-04-09 04:21
powered by Lua 5.1.4 on SDK 1.4.0
set up wifi mode
>
FYI: LuaLoader version 0.91 is available for download!
Connected to wifi as:192.168.1.29
{"M":"checkin","K":"6e86b3cc7","ID":"16936"}
DHT Temperature:29;Humidity:47
DHT Temperature:717.4;Humidity:1203.2
DHT Temperature:717.2;Humidity:1177.6
DHT Temperature:717;Humidity:1177.6
DHT Temperature:692.1;Humidity:1177.6
DHT Temperature:692.1;Humidity:1177.6
DHT Temperature:691.7;Humidity:1177.6
DHT Temperature:691.4;Humidity:1177.6
DHT Temperature:691.4;Humidity:1177.6
DHT Temperature:691.4;Humidity:1177.6
DHT Temperature:666.5;Humidity:1177.6
DHT Temperature:666.3;Humidity:1177.6
DHT Temperature:666.1;Humidity:1177.6
DHT Temperature:665.8;Humidity:1177.6
DHT Temperature:26;Humidity:46
DHT Temperature:640.9;Humidity:1177.6
DHT Temperature:640.6;Humidity:1177.6
DHT Temperature:640.3;Humidity:1177.6
DHT Temperature:640.2;Humidity:1177.6
DHT Temperature:25;Humidity:46
DHT Temperature:25;Humidity:46
DHT Temperature:615.2;Humidity:1203.2
DHT Temperature:615.2;Humidity:1203.2
DHT Temperature:614.9;Humidity:1203.2
DHT Temperature:614.8;Humidity:1203.2
DHT Temperature:614.7;Humidity:1203.2
DHT Temperature:614.5;Humidity:1203.2
DHT Temperature:614.6;Humidity:1203.2
DHT Temperature:614.5;Humidity:1228.8
DHT Temperature:614.5;Humidity:1228.8
DHT Temperature:589.7;Humidity:1228.8
DHT Temperature:589.5;Humidity:1228.8
DHT Temperature:589.5;Humidity:1228.8
DHT Temperature:589.6;Humidity:1228.8
DHT Temperature:589.5;Humidity:1228.8
DHT Temperature:589.3;Humidity:1228.8
这是我读取的温湿度，为啥不正常呀。
Not connected to comm port
Connected to COM5 at 9600 baud
0倊??揜??OAE抏圑O7E掋翃
捽萨
NodeMCU custom build by frightanic.com
branch: master
commit: c8037568571edb5c568c2f8231e4f8ce0683b883
SSL: false
modules: adc,cjson,dht,enduser_setup,file,gpio,hx711,net,node,pwm,tmr,uart,wifi
build built on: 2016-04-09 04:21
powered by Lua 5.1.4 on SDK 1.4.0
set up wifi mode
>
FYI: LuaLoader version 0.91 is available for download!
Connected to wifi as:192.168.1.29
{"M":"checkin","K":"6e86b3cc7","ID":"16936"}
DHT Temperature:29;Humidity:47
DHT Temperature:717.4;Humidity:1203.2
DHT Temperature:717.2;Humidity:1177.6
DHT Temperature:717;Humidity:1177.6
DHT Temperature:692.1;Humidity:1177.6
DHT Temperature:692.1;Humidity:1177.6
DHT Temperature:691.7;Humidity:1177.6
DHT Temperature:691.4;Humidity:1177.6
DHT Temperature:691.4;Humidity:1177.6
DHT Temperature:691.4;Humidity:1177.6
DHT Temperature:666.5;Humidity:1177.6
DHT Temperature:666.3;Humidity:1177.6
DHT Temperature:666.1;Humidity:1177.6
DHT Temperature:665.8;Humidity:1177.6
DHT Temperature:26;Humidity:46
DHT Temperature:640.9;Humidity:1177.6
DHT Temperature:640.6;Humidity:1177.6
DHT Temperature:640.3;Humidity:1177.6
DHT Temperature:640.2;Humidity:1177.6
DHT Temperature:25;Humidity:46
DHT Temperature:25;Humidity:46
DHT Temperature:615.2;Humidity:1203.2
DHT Temperature:615.2;Humidity:1203.2
DHT Temperature:614.9;Humidity:1203.2
DHT Temperature:614.8;Humidity:1203.2
DHT Temperature:614.7;Humidity:1203.2
DHT Temperature:614.5;Humidity:1203.2
DHT Temperature:614.6;Humidity:1203.2
DHT Temperature:614.5;Humidity:1228.8
DHT Temperature:614.5;Humidity:1228.8
DHT Temperature:589.7;Humidity:1228.8
DHT Temperature:589.5;Humidity:1228.8
DHT Temperature:589.5;Humidity:1228.8
DHT Temperature:589.6;Humidity:1228.8
DHT Temperature:589.5;Humidity:1228.8
DHT Temperature:589.3;Humidity:1228.8
这是我读取的温湿度，为啥不正常呀。
deng
回复于：2020-05-30 20:53:19
回复 @levid:你是不是就照着上面的流程下来的，我一直显示DHT超时诶
deng 评论于：2020-07-14
09:16:00
求后续连接平台教程