Tag: MQTT

If you are using paho android mqtt client, you may get the following error if the broker is down or the client is not able to connect to

In a recent hackathon my team developed an application that can be used in lifts , to improve the user experience. Along with Arvind Raman, Sankar, Sachin Ranka,

In this blog we will see how to connect to a MQTT broker and receive messages from the broker. We will also handle connection losses to broker and

NodeMCU is great for connecting cloud and arduino is great at talking with different sensors. nodemcu has only one analog pin. In this blog we will see how

In this blog we will see how to connect accelerometer to edison and send the accelerometer readings to AWS IoT through MQTT. First connect the grove accelerometer to

In this blog we will see how to change PWM duty cycle of NodeMCU (PWM control) from a remote client. Our hard ware will be nodeMCU and on

Lua allows to load a string and execute it as code at runtime. We can use this feature to send code snippets to the NodeMCU. There are several

In this blog we will see how to use MQTT on Linkit ONE using GPRS, i.e the internet connectivity will be provided by GPRS instead of WiFi. This

We have seen how to use MQTT on nodeMCU in previous post, But in that post we didn’t do any thing useful. In this post we will build a

In this blog we will see how to connect to a MQTT broker from nodeMCU and exchange messages. We will just subscribe to the channel and display the