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LED Mood light

In this projects 8 different colors are displayed with the use of a RGB LED. The microcontroller that is used is the ATMega8. An RGB LED is a LED which has three LED's integrated in one packaging. These LED's have the colors red, green, and blue. Such a LED costs about 1 Euro. With these three colours you can mix to any colour. When using 8-bit PWM a number of 255 * 255 * 255 (= 16581375) combinations can b ...

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LED Driver MAX7219 – clock

Below is the schematic that shows how the IC is wired to the ATMEGA328 microcontroller and the 4 digit 7-segment display with comon cathode.   Besides the MAX7219 you need only three other external components: two capacitors and one resistor. The capacitors are here to reduce noise signals and cannot be ommited. The resistor is used to set the limit for the LED's current. It should be at least 10kohm. ...

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MCU-based LED-VU Meter

From time to time, I see people trying to build an audio VU meter. In the analog era, that’s typically done with a voltage divider + a series of comparators; or using chips like LM3914/3915. Those chips are harder and harder to find, or you may need more resolution, or a different output profile. What to do? Modern MCUs offer an easy solution. their build-in ADC (10-bit or more) is more than enough for this ...

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64×16 MQTT LED Matrix Display

MQTT LED Matrix Display 7 Replies My MQTT network at home moves up and down a lot of messages: sensor values, triggers, notifications, device statuses,… I use Node-RED to forward the important ones to PushOver and some others to a Blynk application. But I also happen to have an LED display at home and that means FUN. LED displays are cool. Your team’s score, your number in the IRS queue, the estimated arriv ...

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POV Cylinder with Arduino Due

Story Introduction This is my first Arduino project. My work was inspired by several maker projects that created Persistence of Vision Displays [2,3,4]. Persistence of vision (POV) refers to the optical illusion whereby multiple discrete images blend into a single image in the human mind and believed to be the explanation for motion perception in cinema and animated films [1]. The projects [2,3,4] implement ...

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16×32 RGB Matrix Panel Driver Arduino Shield

Our RGB matrix panel driver shield for Arduino Uno has been slightly revised. The shield now also carries the DS1307 RTC chip on board along with a CR1220 coin cell battery holder on the back. It is applicable for driving popular 16×32 RGB matrix panels with HUB75 (8×2 IDC) connectors. Row and column driver circuits are already built on the back side of these matrix panel. The data and control signal pins f ...

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Test application for the FPGA Tibbit in the smart LED controller configuration

You will need: TPP2, TPP2(G2), TPP3, or TPP3(G2) board One Tibbit #57 One Tibbit #20 Optionally, one Tibbit #00-3 (if you are going to power your smart LEDs from your TPS system) Several SK6812RGBW LEDs (or a board, or a LED strip containing these LEDs) Optionally, one Tibbit #10 (12V->5V regulator) Optionally, one Tibbit #18 (power jack) The last two Tibbits are necessary if you are going to power your ...

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