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Archive for the ‘Arduino’ Category

Attiny85 pogo backpack programmer

Monday, May 14th, 2018

Facelesstech published a new build: So you are using a bare attiny85 in your next project but don’t have room for the programming header, What do you do? I came up with the idea of using pogo pins layed out on A PCB so that they will sit on top...

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Posted in Arduino, AVR | No Comments »

ESP8266 SPI Spy

Friday, May 4th, 2018

nop head writes: I came across a very useful post by Thomas Scherrer that describes how to read data from a Peacefair PZEM-021 energy meter by spying on the SPI bus with an Arduino. I decided to do the same thing with an ESP-12F WiFi module so that I could...

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Posted in Arduino, wireless | No Comments »

How servo motors work and how to control servos using Arduino

Tuesday, April 24th, 2018

Dejan Nedelkovski over at HowToMechatronics shared detailed tutorial on how servo motors work and how to control servos using Arduino and PCA9685 PWM driver: There are many types of servo motors and their main feature is the ability to precisely control the position of their shaft. A servo motor is...

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Posted in Arduino, tutorials | 3 Comments »

Nui (IR volume controller)

Tuesday, April 10th, 2018

  Alvaro Prieto made an IR volume controller and wrote a post on his blog detailing its assembly: Nui is an IR controlled volume controller for analog audio. It sits between your audio source and speakers and can amplify or reduce the volume using IR commands (and eventually BLE). Why...

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Posted in Arduino, infrared | 1 Comment »

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 »

‘Daytime Running Light’ module (DRL) with ATtiny85

Friday, March 30th, 2018

Nicu Florica writes: A reader of my sites and blogs, Mr. Liviu Hinoveanu wanted to replace classical DRL module made with 555 with Attiny85 programmed in Arduino style. He send me the schematic and PCB designed with Livewire and PCB Wisard software After I undertand what module must work, I...

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Posted in Arduino, AVR | No Comments »

Laser arm

Monday, March 12th, 2018

Facelesstech published a new build: So some time last year I ordered one of those servo 2 axes (pan and tilt torret) arm kits from aliexpress. It was fun to play with but I didn’t quite find a reason to use it in a project. Then I seen this project on hackaday and...

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Posted in Arduino | No Comments »

Arduino controlled Dual Mono AK4490 DAC (part 3)

Tuesday, March 6th, 2018

Here’s the part 3 of Dimitris' Arduino controlled Dual Mono AK4490 DAC project we covered previously: Following up on Part 2, it’s time to talk about the output stage. This output stage is the brainchild of my friend Kostas, all I did was lay out the PCB. It is a fully...

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Posted in Arduino | 2 Comments »

TWANG, an Arduino-based dungeon crawler

Friday, January 19th, 2018

Bdring built his own Arduino-based 1D dungeon crawler inspired by Robin Baumgarten's  Line Wobbler: I have been a Patron of Robin Baumgarten for a while. He makes experimental hardware for games. His Line Wobbler one dimensional dungeon crawler is my favorite and I have always wanted to play it. It...

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Posted in Arduino | No Comments »

Yield function, printable class and mapping arrays: Useful but unknown features from Arduino core

Thursday, January 18th, 2018

Yahya Tawil over at Atadiat wrote a new tip for Arduino developers about three hidden and useful features in Arduino core: Arduino core, the source code of Arduino API functions and classes, has three useful features that can be used effectively. As the Arduino core documentation doesn’t mention them (at least...

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Posted in Arduino, techniques | 9 Comments »

Arduino Tutorial: Adding sensors to your data logger

Monday, January 15th, 2018

Edward Mallon writes: This post isn’t another How-To tutorial for a specific sensor because the Arduino community has already produced a considerable number of resources like that.  You’d be hard pressed to find any sensor in the DIY market that doesn’t give you a dozen cookbook recipes to follow after...

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Posted in Arduino, tutorials | 1 Comment »

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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Posted in Arduino | No Comments »

Weather logger with Losant and Amazon Alexa

Thursday, November 30th, 2017

Steve documented his experience experimenting with home weather logging: Like a million other people on the Internet, I’ve been experimenting with home weather logging. I roll my eyes at the phrase “Internet of Things”, but it’s hard to deny the potential of cheap networked sensors and switches, and a weather...

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Posted in Arduino, sensors, wireless | 2 Comments »

Arduino controlled Dual Mono AK4490 DAC (part 1)

Thursday, November 16th, 2017

This article is the first of a series detailing the design and build process of an Arduino controlled Dual Mono AK4490 DAC by DimDim: The design goal was to do a dual mono design so as to maximize SNR and channel separation. A 4-layer PCB design was chosen so as to...

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Posted in Arduino, DIY | No Comments »

How to configure I2C sensors with Arduino

Tuesday, November 7th, 2017

Edward Mallon writes: I’ve spent the last year in the ‘uncanny valley’ of the Arduino. That’s the point where you understand the tutorials at Arduino.cc, but still don’t get much from the material on gitHub because trained programmers would never stoop to using the wire.h library when they could just...

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Posted in Arduino, how-to | 1 Comment »

ESP8266 Deep Sleep with Arduino IDE

Monday, October 30th, 2017

Rui Santos has written a great guide shows us what’s Deep Sleep and how to use it with the ESP8266 in the Arduino IDE. With most of the ESP8266 modules, you can’t change the hardware to save power, but you can write software to do it. If you use the...

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Posted in Arduino, tutorials | 2 Comments »

Pulse Oximeter functionality for a medical device

Wednesday, October 18th, 2017

Alexander Lang writes: The gentlemen for whom I'm developing this hardware for has requested some additional functionality. The additional functionality requested is a Pulse Oximetry measurement.  Pulse Oximetry is the measurement of a person's pulse along with how much oxygen is present within their blood.  It is a common measurement...

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Posted in Arduino, tutorials | No Comments »

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 »

Building a single pixel scanner

Tuesday, July 4th, 2017

Kerry Wong published a new build: A flat bed scanner typically uses three rows of CCD sensors (RGB) to capture images placed directly on top of the glass bed. When the CCD array scans from one end of the image to the other, the digitized color image is formed. So...

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Posted in Arduino | No Comments »

Arduino data logger update

Tuesday, June 20th, 2017

An update on Edward Mallon’s Arduino data logger project we covered previously: If you need a logger with a cheap durable housing, it’s still hard to beat the Dupont-jumper build released in 2016. But sometimes I need more of a bare-bones unit for bookshelf test runs while I shake down...

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Posted in Arduino, DIY | 2 Comments »

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