Application Notes RSS
Build a People Counter Using an ESP8266, NodeMCU and HC-SR501 PIR Motion Detector
Want to get an idea of how many people are coming and going in an area? Build your own people counter with an ESP8266 NODEMCU, HC-SR501 PIR Motion Sensor, Ubidots Cloud, and the Arduino IDE. A people counter is a device that used to measure the number of people traversing an entrance, hallway, street corner, etc. If you need to know how many people exist in a space, this is your simple solution. Mostly used in retail stores, shopping malls, and smart office buildings, this counting technology has provided insight to how shoppers/employers behave.How is the people counter application applicable...
AMS1117 3.3V and 5V Module Output Current vs Voltage Safe Operating Area (SOA) Curves
Our AMS1117 3.3V and 5V voltage regulator modules are rated at 1 Amp maximum output current. However it is a linear regulator, not a switching converter. This means it will dissipate a lot of heat if it is asked to handle a higher current with a large voltage drop. This should be taken into account in your circuit design, as the module will not be able to achieve the full 1A output when the input to output voltage differential is greater than a couple of volts. We have developed these Safe Operating Area (SOA) curves to assist in your design, and to...