46 years ago today was the first remote transmission between two computers using TCP/IP. You have come a long way baby! In the glow of a green monochrome screen deep in the bowels of the computer science department at UCLA,
The MCP23017 is a very useful chip. This I2C device can be wired for 8 unique addresses, and offers 16 inputs, 16 outputs, or 8 of each. A one stop chip for all needs. You can talk directly to the
As a network engineer, I never go anywhere without my Ethernet cable tester. That and a audible cable finder (fox & hound) are invaluable for finding and testing cable pairs. Today I’m showcasing a Arduino Ethernet cable tester. This tester
The Arduino UNO (and 328 clones) has the ability to report the rail voltage and temperature of the chip. You don’t need any additional wiring or sensors, just the Arduino itself. The temperature is not very accurate, and reports in
Since half of South Carolina is under water, and the levels keep increasing each day, I decided to modify our fuel and cistern fluid level project to a flood level monitor. We start with a eTape level sensor from Milone
Seven Segment LED’s are a common method of displaying data. With 8 datapins, they are also complicated to wire up, as each LED needs a Arduino pin and a resistor. With a library, we can simplify the wiring, and the
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