An Arduino Knight Rider Rainbow dice built using a clock by Davide Gironi: This project implements a Knight Rider / Rainbow effect Random Selector. It uses an Arduino UNO and a WS2812B RGB led strip. A friend of mine needs a random selector for train scale model. I’ve developed this using the Arduino framework, because […]
Tag Archives: Arduino Uno
A Line-us clone
Barton Dring has a nice build log on his Line-us clone project: I have been going to the monthly Amp Hour, Hardware Happy Hour meetup. A lot of people bring something to show. My projects are too big. Also, you need to bring your own power. The meetup standard seems to be running off a USB cord. I […]
An isolated analog output for Arduino Uno
Giovanni Carrera writes: This project completes the series of my articles about the Arduino analog I/O with the aim to use it as a controller of small automation systems. In control systems of the industrial plants it is always advisable to isolate both the inputs and the outputs coming from the field. This prevents disturbances […]
Understanding Arduino UNO hardware design
Yahya Tawil over at All About Circuits has published an article on Arduino UNO’s electronic design and better understanding of its hardware: This article explains how Arduino works from an electronic design perspective. Most articles explain the software of Arduinos. However, understanding hardware design helps you to make the next step in the Arduino journey. […]
2.2 or 2.4 or 2.8 inch SPI TFT LCD ILI9341 to Arduino Uno
Bob Davis has written an article on interfacing a 2.8 inch SPI TFT LCD ILI9341 with the Arduino Uno: Over the weekend I figured out how to interface a 2.8 inch SPI TFT that has a ILI9341 chip to an Arduino Uno. All it takes is eight 1K resistors. Most people use a 4050 IC. […]
AD9850 DDS VFO
Richard Visokey of AD7C made a DDS VFO using AD9850 and an Arduino Uno: I built a simple VFO for a direct conversion receiver I am putting together. The VFO uses an AD9850 DDS chip to synthesis a nice 1Vp-p sinusoidal wave. I used an Arduino Uno to set the AD9850 frequency, drive an LCD display, […]
Arduino Uno R3 graphics accelerator shield uses no pins
Andy Brown has written an article detailing his Arduino graphics accelerator open source project: This project brings together the knowledge that I’ve gained over the last few years to bring you a graphics accelerator for the Arduino Uno R3 based on an ARM Cortex M0 core attached to a 640×360 LCD from the Sony U5 Vivaz […]
DIY lithium battery charger shield for Arduino
Abdulgafur Mujdeci over at Electro-Labs has published a new project a DIY lithium battery charger shield for Arduino: In this project, we are building a programmable single/multi cell lithium battery charger shield for Arduino. The shield provides LCD and button interface which let the user set the battery cut-off voltage from 2V to 10V and charge current from […]
Introducing CT-UNO, Cytron version of Arduino UNO
Vincent informs us of this Arduino compatible CT-UNO, the Cytron version of Arduino UNO: The CT-UNO combines the simplicity of the UNO’s Optiboot bootloader (which load program faster), the stability of the FTDI and the R3 shield compatibility of the latest Arduino UNO R3. Besides, we know many are using Android phone which comes with USB micro-B cable […]
Measure RPM – DIY portable digital tachometer
Electro18 posted a tutorial on how to make a portable digital optical tachometer using an Arduino Uno, an instructable here: A tachometer is a device used to measure the RPM or Revolutions Per Minute of any rotating body. Tachometers can be contact based or non-contact ones. The non-contact or contact-less optical tachometers usually use laser or Infrared […]
Hard disk drive clock with Arduino Uno
ACVoltage wrote this instructable detailing his DIY POV clock using hard disk drive and Arduino Uno: This is a fun project that can be done easily and also cheaply. In this instructable we will explain step by step how to make this beautiful POV clock. Used material: -Arduino Uno, -Tiny RTC modul, -ULN 2003, -IR diode and IR transistor […]
Arduino GPS map navigation system
Kathy Yang of Elecfreaks writes: Built on the basis of Arduino UNO, GPS, SD card, TFT, GPS map navigation system is to obtain the real-time position information via GPS, to send it to UNO for calculation, according to the calculating results, and teamed up with the map file stored in SD card, thus presenting the […]
DIY stroboscope
ReturnZero published a stroboscope build: At its heart, a stroboscope is just a rectangular wave generator hooked up to a light source. I wanted a few extra features to make it nice to use: Ability to set flash rate by either frequency or RPM Set duty cycle of output without affecting flash rate LCD display […]
DIY cardboard laser piano
Here’s a cool DIY cardboard laser piano by ElecFreaks: Hi Guys, today, ElecFreaks will show you a guide how to make a cardboard laser piano by yourself. By this way, I think you do not only could make piano , you can transform a table , a window or a wall to be a Laser Piano or a […]
Arduino clock generator + divider experiment
John Slee writes: Anyway, I decided to try to make my own clock divider. Didn’t take long to get something working, and you can see the results in the video above. The genuine Arduino Uno is generating a simple square wave on pin 13, which you can observe with the built-in LED. The Freetronics clone […]
K4S, a keyboard for Arduino to use with Scratch
Jechavarria writes: Here’s my las project, in collaboration with the blog www.desafioecuador.org. It’s a keyboard board to mount in Arduino UNO board that allows work with S4A, a mod of Scratch to use with Arduino. I hope you like it! Via the forum.
Car proximity v2
Bithead writes: The transceiver I created for the original solution was based on an Arduino Uno with an Xbee shield. I put the assembly inside a Sparkfun Arduino Project Enclosure which measures 87x64x28mm. This has worked well for about 1.5 years now, but there is room for improvement: 1. I’d like to shrink the enclosure […]
LineBot project
A followup to the line-follower robot post, the LineBot project by bithead942: LineBot leverages an Arduino Uno which helps to decrease the complexity. I also used an Ardumoto shield for motor control (I’ll pre-solder the headers and screw terms). Using these will help accelerate the build since it means fewer parts on the breadboard and […]
Arduino Uno 3 million samples per second logic analyzer
Bob Davis has built an Arduino powered three Million samples per second six channel logic analyzer: In the video below you can see what the live display looks like. He is using a 74 series decade counter to divide down a 10Mhz crystal so that he has some nice fast stuff to sample. He experimented […]
Arduino Uno quality control
Moogle was disappointed by his new Arduino Uno. He thought it was pretty unrefined: rough edges, thin solder mask, poorly aligned headers. Arduino responded directly that this is an isolated incident. They will replace any less than perfect hardware. (A Moogle followup post) Additionally, bongobat may have encountered a major bug in the circuit that […]