For the challenge, I wanted to send data from my computer's real serial port (RS232 9-pin connector). For that, I created an adaptor circuit because the voltages on a computer serial port are ...

The QR701 thermal printer is a compact and versatile printing solution that can be easily integrated with Arduino and Wemos platforms. This guide provides instructions on how to set up and use the ...

Today, GSM networks are widely-used, whether for making calls or sending SMSes. But some places need urgent messages like in colleges, railway stations, events, share market and so on, and this ...