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Posts Tagged ‘Arduino’

A touch numeric keyboard for Arduino or Teensy

Thursday, June 28th, 2018

Giovanni Carrera blogged about his touch numeric keyboard for Arduino or Teensy: Very often, for our programs, we need a system to set parameters, usually of a numerical type. A 4x4 keyboard requires some space and then we also need a display. Here is the idea of using a touchscreen...

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Posted in Arduino | No Comments »

EEPROM rotation for ESP8266 and ESP32

Wednesday, June 27th, 2018

Xose Pérez over at Tinkerman writes: The Arduino Core for ESP8266 and ESP32 uses one SPI flash memory sector to emulate an EEPROM. When you initialize the EEPROM object (calling begin) it reads the contents of the sector into a memory buffer. Reading a writing is done over that in-memory...

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Posted in code, tutorials | 4 Comments »

Video tutorials: Building the Arduino based data loggers

Friday, June 22nd, 2018

https://www.youtube.com/watch?v=FZFAcZmmxHA&list=PL79ZjHgoYtfzvDKPADJH7HPYDFFlxSLXt From the comments on our Arduino data logger post: A visiting researcher dropped by our humble basement workshop with questions about the physical skill level students would need if they added one of our DIY data loggers to their environmental curriculum. I figured the easiest way to cover that was...

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Posted in Arduino, tutorials | 2 Comments »

Neopixel clock, v2

Monday, June 18th, 2018

David Zweben published a project writeup showing how he built a Neopixel clock powered by an Arduino Pro Mini clone and a real time clock module: After building my first Neopixel Clock, I decided I needed one for myself. There was no way I was going to solder 90 lengths...

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Posted in Arduino, clock | No Comments »

Traktorino, an open source DIY MIDI controller

Wednesday, April 4th, 2018

Here's an Arduino based open source MIDI controller by Musico Nerd, the Traktorino: The Traktorino is a powerful low-cost DIY MIDI Controller. It is based in the Arduino platform and it comes in DIY kit, or assembled. In its core, there’s a shield that connects to an Arduino Uno, which...

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Posted in Arduino, DIY, open source | No Comments »

Attiny85 backpack programmer header

Monday, March 19th, 2018

Facelesstech published a new build: So when I was into using just a atmega328 dip chip I make a programmer header for it that also had a crystal and the capacitors need to make it function. I wanted to do the same for the attiny85. As you know you have...

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Posted in AVR | No Comments »

Arduino controlled Dual Mono AK4490 DAC (part 2)

Wednesday, December 27th, 2017

An update on Arduino controlled Dual Mono AK4490 DAC project we covered previously: After I was certain that everything related to the software was working the way it should, I designed a “motherboard” that would take care of the following: Accept the STM32F106 board Accept the 3.5″ TFT Accommodate an...

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Solid-state joystick

Tuesday, August 22nd, 2017

Paul Gardner-Stephen writes: Early in the year, one of my colleagues, Damian, showed me one of these strain-gauge solid-state joysticks that they were using as part of the undergraduate engineering curriculum. Their goal was to teach the students how to read strain-gauges. But I immediately saw the applicability for making...

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Posted in Arduino, gadget | No Comments »

Pool playing robot

Monday, May 8th, 2017

BVarv  wrote an instructable detailing the build of his pool playing robot project with Arduino: I redesign the prototype with servos, belts and gears at the points of rotation to add programmable motion. While doing so, I stumble across an easy win. It turns out that the "parked under the table"...

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HP 7044A X-Y recorder teardown, Lorenz Attractor

Wednesday, May 3rd, 2017

Kerry Wong did a teardown of a vintage HP 7044A x-y recorder and programmed an Arduino Due to draw the Lorenz Atrractor using this recorder: To test the recorder, I wrote a simple program using Arduino Due that generates a Lorenz attractor. The min/max boundaries for each axis were obtained...

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Posted in Teardowns | No Comments »

Calibrating Thermistors on a 3.3v Arduino

Tuesday, May 2nd, 2017

Edward Mallon writes, "I’ve managed to get cheap thermistors calibrated to about to +/- 0.2C with 3.3v Arduinos. Instead of playing whack-a-mole with the various sources of error, I simply rolled them into some synthetic Steinheart-Hart constants, and I was able to get the therm’s output onto the reference line...

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Lift: Millimeter-level finger tracking with Arduino and light sensors

Friday, April 21st, 2017

Researchers at the UC Irvine and the FX Palo Alto Laboratory present Lift, a visible light-enabled finger tracking: By projecting encoded visible patterns onto an object’s surface (e.g. paper, display, or table), and localizing the user’s fingers with light sensors, Lift offers users a richer interactive space than the device’s...

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Posted in Arduino, sensors | No Comments »

GMLAN sniffing with Arduino + MCP2515 board

Thursday, April 20th, 2017

Dimitar writes: If you are reading this I suppose you are already familiar with GMLAN. In short, GMLAN is a communication protocol based on CAN-BUS to send data between different Electronic Control Units (ECUs) in the car like BCM (Body Control Module), IPC (Instrument Panel Cluster), EHU (Entertainment Head Unit)...

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Individually addressable incandescent lamps

Tuesday, April 18th, 2017

Michael wrote an article on controlling a bunch of lamps individually with WS2811 drivers and Arduino: I simply used the same technology as LED strips to allow communication between lamp modules. LED strips have RGB LEDs with an embedded driver chip which uses PWM (pulse width modulation) to control the...

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Posted in Arduino, LEDs | No Comments »

Single tube Lethal Nixie clock

Friday, January 20th, 2017

Andrew Moser made a lethal nixie tube clock: Clock 1: Single tube Lethal Nixie clock — you know having all the high voltage lines exposed and un-insulated. Inspiration for this design was from this clock. Unfortunately I built mine right after having surgery. I think the painkillers had something to...

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Posted in clock | 2 Comments »

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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Posted in Arduino, open source | No Comments »

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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Posted in Arduino, LEDs | No Comments »

How to run your ESP8266 for years on a battery

Thursday, December 1st, 2016

Here's a detailed article on how to run an ESP8266 for a long time on a battery by Marco Schwartz: For most of the projects I am building with the ESP8266 WiFi chip, I usually don’t care too much about the power consumption aspect. I for example build data loggers that...

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Posted in how-to | 5 Comments »

SMD edge connectors

Monday, November 14th, 2016

Facelesstech has written an article describing a technique he used for connecting two boards together. More details at Facelesstech's blog. Check out the video after the break. (more…)

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Posted in techniques | No Comments »

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