USB power socket

How to connect your project to USB power

A popular, traditional way to power electronics projects had been to use a DC power socket with an external power supply. DC power supplies with a power jack (e.g. a “2.1mm jack”) are readily available and quite affordable. Speaking for our projects, we often brought in a 9V/12V DV power supply and employed a 7805 […]

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TM1637 Tube display module in bezel

Using the TM1637 LED Tube display

Using this nice 4-digit display with your Arduino Although the more-graphical displays are terrific (and some are cheap to buy too) , sometimes your application doesn’t need the added coding complexity. And for some projects, a “traditional” 7-segment display is simply a better choice for the project at hand – for example, clocks, GPS speedometers, […]

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SSD1306 OLED display for our bezel

How to mount a 0.91″ OLED display

The 0.91″ 128×32 OLED Display is a terrific little display. Its crisp display needs no backlight, it only has 4 pins (I2C), it is small, easy to code-up, readily available and, well, low cost (i.e. cheap). For my own more-complex projects, I often add one directly to the PCB just as a diagnostic tool, helping […]

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