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Archive for the ‘Arduino’ Category

DIY thermal imaging

Tuesday, January 24th, 2017

Niklas Roy has written an article detailing his DIY thermal imaging with an IR thermometer: I did not want to hack/destroy the brand new thermometer, as I still plan to use it in its original form later. For that reason, I decided to temporarily attach an old webcam to its back. This...

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DIY Arduino GRBL CNC with a laser

Wednesday, January 4th, 2017

[embed]http://www.youtube.com/watch?v=7kHqe4ddYzY[/embed] A DIY Arduino GRBL CNC with a laser from Bob Davis. Project info at Bob Davis' blog.

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Electro pet

Monday, December 19th, 2016

Facelesstech has a nice build log on his electro pet project, inspired by Circuitbeard's petduino: I got inspiration for this project from the petduino. The petduino is a great project to get kids into coding and electronics. I thought I would have a go and see if I could add...

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A Christmas star with Neopixel LEDs

Saturday, December 17th, 2016

A geeky Christmas decoration made with 56 LED Neopixel and controlled via an Arduino Micro board from Open Electronics: Let’s take a look, therefore, at the project’s electrical section, that is essentially composed of a set of 56 Neopixel LEDs, that have been arranged so to form two concentric stars; the...

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Serial seven segment LED display shield

Wednesday, December 7th, 2016

Raj over at Embedded Lab has just finished a new project article about a serial seven segment LED display shield: Seven segment LED displays are brighter, more attractive, and provide a far viewing distance as well as a wider viewing angle compared to LCD displays. This project describes a serial seven...

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Adjusting clock with alarm, hygrometer & thermometer on 1.8″ ST7735 display

Friday, December 2nd, 2016

Nicu Florica blogged about his adjusting clock with alarm, hygrometer and thermometer on 1.8" ST7735 display: I use feature from article Another adjusting clock with alarm & thermometer using DS3231 on 1.8" ST7735 display and change reading internal temperature of DS3231 with DHT22 senzor (AM2302), but you can use a cheaper...

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Yet another Arduino clock

Tuesday, November 8th, 2016

Sverre Holm blogged about his Arduino clock project: Its main features are: Controlled by a GPS module outputting data over an RS232 serial interface, and handled with the TinyGPS++ library Shows raw GPS data such as UTC time and date, position, altitude, and number of satellitess Shows derived GPS data such...

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4-20 mA current output for Arduino Uno

Tuesday, November 1st, 2016

Giovanni Carrera writes, "The purpose of this project is to provide a 4-20 mA output from a PWM signal generated by a microcontroller ATmega328 and numerous other chips, such as the PIC. One of the more interesting applications of this circuit would be to replace or to realize a smart...

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DIY Arduino ProMini data logger

Friday, October 28th, 2016

Ed Mallon blogged about his DIY ProMini data logger build: Typical pro-mini loggers built with this design sleep at 0.25mA, before extra sensors are added. At that current draw, the logger should deliver approximately six months of operation on three brand new AA batteries with a 15min duty cycle; depending...

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Fan controller project

Thursday, October 27th, 2016

Lucky Resistor has written up documentation on his fan controller project: The fan controller described on this project page, controls one or more PWM controlled 12V PC fans. It uses the input from two precise DHT22 based temperature sensors. The MCU is an Arduino Uno, which is powered using a...

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Guide for BMP180 barometric sensor with Arduino

Thursday, October 20th, 2016

A how-to on using the BMP180 barometric sensor with the Arduino from Random Nerd Tutorials: The BMP180 barometric sensor (model GY-68) is the one in the following figure (front and back view). It is a very small module with 1mm x 1.1mm (0.039in x 0.043in). It measures the absolute pressure of...

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Posted in Arduino, tutorials | 1 Comment »

Gnat-Stats, Tiny OLED PC performance monitor

Monday, October 17th, 2016

Rupert Hirst writes: After a recent purchase of a Nvidia GTX1080 graphics card, 4k monitor plus Doom(2016), I thought it would be great to see some external telemetry... from my exorbitant purchase. Then, I Stumbled upon on Psyrax's "Serialmonitor" GitHub repository! Armed with an Arduino ProMicro plus a 128x64 pixel OLED...

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Arduino Mega EPROM programmer

Friday, October 14th, 2016

An Arduino Mega Eprom Programmer project from Robson Couto, that is available on github: Recently I acquired a SNES. But it only came with a bootleg Mortal Kombat cartridge. Searching for games I found a lot of repro cartridges (Cartridges with the ROM swapped) being sold at local second hand...

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An isolated analog output for Arduino Uno

Friday, October 7th, 2016

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...

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An Arduino Terminal

Saturday, September 10th, 2016

  Peter Scargill writes, "As it happens I’m experimenting on a 1284 chip which while being Arduino-compatible kind of, it does have another serial port, so without disconnecting my FTDI – I hooked up the second serial port to the home control serial and fired the DEBUG command at the...

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DIY Desktop CNC with an Arduino

Wednesday, August 31st, 2016

Bob Davis has been working on rebuilding his DIY CNC machine: I have been busy rebuilding my DIY CNC machine. It will be all metal when I get done. It will also include a USB interface, likely an Arduino. None of my computers have a parallel port these days. So something...

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RC boat with NRF24L01+ and Arduino

Friday, August 19th, 2016

Markus Gritsch writes: I and my little son built a small electric boat from a kit. However, the kit only offered turning on the motor with a switch, and let the boat cruise wherever fortune it may take. I thought why not improve it a bit by adding some RC...

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Dekatron tubes controlled by Arduino

Tuesday, August 16th, 2016

Flathagen writes: Interfacing dekatron tubes with a microcontroller is fairly easy, once you understand how the tubes work. Threeneuron's Pile o'Poo of Obsolete Crap provides the necessary background information and schematics for making this work. I used two russian OG-4 tubes. I prefer the orange look of the neon tubes...

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I2C Continuum

Tuesday, August 2nd, 2016

Peter Scargill writes: Success with I2c – once I realised there was something up at the Arduino end which I could work around, my ESP8266 I2c endeavours have been coming on in leaps and bounds! And here is my test rig – or one of them – I have one...

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Posted in Arduino, wireless | No Comments »

DIY self sustaining solar powered backyard hydroponic garden

Friday, July 8th, 2016

Dan Beaven has been working on his DIY backyard solar powered hydroponic garden. More details at Dan Beaven's blog. Via the contact form.

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Posted in Arduino, DIY | 2 Comments »

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Recent Comments

  • KH: Whoa, some of the code this engineer writes... Just look at part one of the above blog post, see how he coded the 7-segment encodings...
  • Alan: You posted this right next to a bot that draws pictures... It seems logical to ask if there's a version that can draw.
  • mrx23dot: Hi, I'm selling the 2017 version http://www.ebay.com/itm/-/322425850293
  • Max: As a learning experience, sure. Once that's done, though....well...
  • samuel: have a nice week everyone