Hi Readers, today I am discussing another project that is a Wi-Fi based transmitter using NodeMCU. Some of you must be familiar with NodeMCU that is ESP8266MOD and comes with an onboard Wi-Fi chip for IOT projects. In this one I have used a BME280 Humidity sensor and a NodeMCU to take data from Sensor via I2C and Upload it my server. But continuous use of  power can lead to much loss of power and if I use battery if we be dead in several hours of use so I have decided to think for something else and got the solar panel which can be used to charge up the battery every day. In this I have taken an TP4056 battery charging board along with 3.7V to 5V boost converter and an 18650 Li-Ion cell. This cell can easily withstand 2 or three days of continuous power delivery without getting discharged. I used this circuit and was happy form the results. Now I am thinking of designing a specific PCB for the task which will not only reduce the power consumption also provide a smaller space. If you also want your custom PCB to be manufactured, then I will recommend you NextPCB it is so good. Ordering PCB online in various sites are a step towards developing our own circuit. NextPCB provides very easy😎 and fast delivery🚚 of PCB in different masks and paste with professional look. Also, they send you the picture of your PCB before shipping it to you, Now that very exciting…😃😃👍. #arduino #arduinouno #arduinoproject #arduinomega #arduinonano #arduino duo #ESP8266 #BME280