Category: DIY electronics

NodeMCU has on analog channel which is configured to read the System voltage, we can configure it to sample the external pin. The ADC seems a bit jumping

We have seen how to send the arduino serial content as email here, in this blog we will see how to send an email to arduino.Instead of simply

In this blog we will build Intruder detector using NodeMCU/ESP8266, more of like a burglar alarm. We will be using a IR reflection based sensor. The sensor working

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

In this blog we will see how to create a Azure IoT hub so that we post messages to Azure IoT hub. IoT hub has different SDKs  for

Azure IoT hub allows direct MQTT connections. So we can use MQTT module of the Node MCU to connect with the Azure IoT hub. You need a SAS

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 one of my blogs we have seen how to post data to the twitter using node-red. In this blog we will see how send a mail when

In this blog we will see how to setup development environment for Intel D2000 and write blinking LED program for it. Features of the intel D2000: 8 KB

Connecting NodeMCU to twitter: In this blog we will see how to post a tweet from nodeMCU (Connecting NodeMCU to twitter). Making nodeMCU talking to twitter server is