Well-known industry author and instructor Jim Johnson is offering a new video for technicians who want to sharpen their troubleshooting skills. "This HVAC training video program, is available in DVD ...

Abstract: The Internet of Things (IoT) has become more prevalent in recent years and is an integral part of everyday life. Thus, the need for ultralow-power sensors and processing units has ...

Abstract: IN THE CONTROL and protective circuits of complex electrical systems it is frequently necessary to make intricate interconnections of relay contacts and switches. Examples of these circuits ...

So you want to control some mains electrical (or lower voltage) item using your phone, perhaps? This single ESP8266 plug-in controls a relay that is built in to the module. An Android app (.apk) ...

VCC Power Connects to 3.3V on the Pico. GND Ground Common reference ground. MISO/DO Master In Slave Out SD → Pico data line. MOSI/DI Master Out Slave In Pico → SD data line. SCK SPI Clock Clock signal ...

This PCB was planed for Sainsmart 4-Channel 5V Relay Module. It is alss possible to measure the current if ACS712 is connected to the prepared header. ACS Generic male header - 3 pins pin spacing ...