7 Segment LED Based SPI Display using 74HC595
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7 Segment LED Based SPI Display using 74HC595

Single Digit Big Display module using 74HC595 IC project will display large size 7 segment single digit number. 3.5inch height, which can be visible over large distance.  More digit can be connected serially to each other easily connector. This circuit is a single digit seven...

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Driving 14-segment displays with the MAX6954
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Driving 14-segment displays with the MAX6954

App note from Maxim on using the MAX6954 to drive 14-segment monocolor LEDs, (PDF): This article is how-to guide, intended as a quick learning aid for engineers considering using the MAX6954 to drive 14-segment monocolor LEDs. The MAX6954 is a versatile display driver, capable of...

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A miniature persistence-of-vision board
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A miniature persistence-of-vision board

axio.ms published an update of the board and firmware of their SMD POV display. This device is simply 8 bright SMD LEDs and an AVR uC and makes use of the Persistence of Vision effect. You wave it about, and it writes messages in the air, with no wires, liquids or unpleasant bending!...

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4 digit charlieplexed segment display
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4 digit charlieplexed segment display

bobricius @ hackaday.io has designed an ultra thin custom display, requiring only 6 gpio pins to drive 30 leds. FEATURES: - 1.05x0.48 inches (26.67x12.22 mm) - 30 led - any color - ultra thin .... etc. on 0.8mm board - only 6 gpio - ideal for wrist watch 4 digit...

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Peak Smart Lamp – Grow Daily
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Peak Smart Lamp – Grow Daily

Peak is a smart lamp that combines light, encouraging messages and a personal improvement algorithm to help you form better habits. Peak is the first smart lamp that helps people form better habits in small, progressive steps. Developing new habits is challenging. We often resist...

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Mid-power UV LED operates at 365 nm
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Mid-power UV LED operates at 365 nm

A ceramic-based UV LED, the VLMU1610-365-135 from Vishay provides typical radiant power of 18 mW at 20 mA and 50 mW at 60 mA over a wavelength range of 362.5 nm to 370 nm. The silicone lens of the device enables extremely long lifetimes of up to 25,000 hour, compared to typical...

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Simple two-transistor circuit lights LEDs
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Simple two-transistor circuit lights LEDs

Barry Tigner @ edn.com has a design idea on how to power a LED from a 1.5V battery using two easily available transistors. A previous Design Idea describes a circuit that uses an astable multivibrator to drive an LED (Reference 1). The circuit in Figure 1 uses a simpler alternative...

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Neopixel Night Light using ATtiny85
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Neopixel Night Light using ATtiny85

joshua.brooks @ instructables.com describes how he build a night light using an Adafruit NeoPixel, ATtiny85 microcontroller, TSSP4038 IR receiver and some other easy available components. I'm giving some workshops in electronics in a few weeks, centered around an inexpensive, but...

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