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Archive for the ‘Arduino’ Category

Sweeperino, Arduino based test instrument

Friday, August 16th, 2019

Ashhar Farhan (VU2ESE) made an Arduino based sweeper for ham radio homebrewing, that is available on GitHub: The Sweeperino a very useful Arduino based test instrument. It is the following: *A very stable, low noise signal generator from 4 MHz to 160 MHz without any spurs *A high precision power...

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Posted in Arduino, tools | No Comments »

Simple DataFlash board

Monday, August 5th, 2019

David Johnson writes: This is a small board that plugs into one of the headers on an Arduino Uno or other board to provide 4Mbytes of non-volatile storage It works with either 5V or 3.3V boards, and is based on the low-cost 4Mbyte Winbond W25Q32FVSIG DataFlash chip. It is ideal...

Posted in Arduino, Chips | No Comments »

Programmable seven segment LED tester

Tuesday, July 30th, 2019

A Seven segment LED tester project from Arduino Enigma: Here is the finished Seven Segment Tester. All of the available Arduino Nano pins, except for analog input pins A6,A7 and Serial Port pins D0 and D1 are connected. This leaves us with 18 pins to bring to the 3M Zero...

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Posted in Arduino, LEDs | No Comments »

63 dB step attenuator

Monday, July 29th, 2019

DuWayne published a new build: While I was working on the power meter function for the latest version of the SNA, I used several fixed attenuators for checking linearity and calibration. It would be a lot easier if I had a variable step attenuator. I have several digital controlled attenuator...

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Arduino brushless motor control tutorial

Thursday, July 25th, 2019

Dejan over at HowToMechatronics.com shared detailed tutorial on how to control brushless motor using Arduino and ESC. Check out the video after the break. (more…)

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Spectrometer on PC

Tuesday, July 16th, 2019

Boris Landoni over at Open Electronics writes, "We use the platform based on the AMS sensors in combination with the Personal Computer and thanks to an ad hoc software we trace on the screen the spectrum curves resulting from the analysis performed." More info on Open Source Project page.

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Posted in Arduino, open source | No Comments »

USB mini media keyboard

Thursday, June 6th, 2019

Sven Krasser built a small USB keyboard input device for media control and wrote a post on his blog detailing its assembly: The project is based on a Pro Micro, an Arduino-compatible ATmega 32u4 board (the 32u4 allowing to easily create USB devices). For iteration 1, I added a couple...

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Minimal ATSAMD21 computer

Thursday, May 9th, 2019

Johnson Davies shared detailed instructions of how to build an ATSAMD21-based computer on a prototyping board using a 32-pin ATSAMD21E: If you're looking for something more powerful than the ATmega328 in the Arduino Uno a good choice is the ATSAMD21. This is an ARM Cortex M0+ processor with up to...

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Arduino interface for TFA9842AJ power amplifier

Tuesday, May 7th, 2019

Dilshan Jayakody writes, "I tested a couple of TFA9842AJ based amplifiers in the last couple of years. The main reason I liked TFA9842AJ is its simple, clean design, wide operating voltage, and high-quality bass-rich audio output.  Thanks to it's built-in DC volume control circuit this audio amplifier can easily interface...

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Arduino Shield for CAT M1 and NB-IoT modems

Monday, April 22nd, 2019

Michael Krumpus designed and built an Arduino shield for Nimbelink Skywire CAT M1 and NB-IoT modems, that is available on Github: Nimbelink has a development kit for use by product developers, but it’s rather expensive. I wanted to try out a Nimbelink CAT M1 modem without the dev kit, and...

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ESP32 DHT11/DHT22 web server – Temperature and humidity using Arduino IDE

Wednesday, April 3rd, 2019

A how-to on building an asynchronous ESP32 web server with the DHT11 or DHT22 that displays temperature and humidity using Arduino IDE. More details on Random Nerd Tutorials. Check out the video after the break. (more…)

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miniduino USB

Thursday, March 28th, 2019

Boris Landoni  writes about a new open source project, the miniduino USB: A small Arduino board with minimal hardware but with access to all I/Os, just like the Nano and equipped with PCB-integrated, direct-insertion USB connector: it is basically an Arduino Pen Drive. More details on Open Electronics project page.

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An Arduino version of Brooks Shera’s GPSDO

Monday, February 11th, 2019

Jeff (aka K6JCA) has a great write-up on implementing the Brooks Shera Phase-Locked Loop GPSDO on an Arduino Platform: This blog post is a continuation of my two earlier GPSDO blog posts. The first one (from a few years back) details a simple Frequency-Locked Loop GPSDO design, based around an...

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Pro mini logger project for the classroom

Tuesday, January 29th, 2019

Edward Mallon writes: Dr. Beddow’s instrumentation class has been building the 2016 version of the Cave Pearl datalogger for more than three years, and feedback from that experience motivated a redesign to accommodate a wider range of student projects while staying within the time constraints of a typical lab-time schedule....

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Posted in Arduino, DIY | 1 Comment »

DIY Arduino based RC transmitter

Monday, January 14th, 2019

  Dejan over at HowToMechatronics posted a detailed how-to on building DIY Arduino RC transmitter: Now I can wirelessly control any Arduino project with just some small adjustments at the receiver side. This transmitter can be also used as any commercial RC transmitter for controlling RC toys, cars, drones and so...

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Teensy 3.6 as standalone mediator between USB MIDI and Eurorack

Friday, December 7th, 2018

Sebastian writes: USB MIDI controllers (such as Launchpad Mini Mk II for example) are common and often quite low in cost. To interface such a controller with a Eurorack synth system, often a host computer and a MIDI to CV interface might be used. The host computer would take USB...

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Tutorial: Adding the SSD1306 OLED screen to an Arduino logger (without a library)

Thursday, October 18th, 2018

Edward Mallon writes: While I loved the Nokia 5110 LCD's readability in full sun, the pressure sensitivity was a real problem for the underwater units. So I started noodling around with some cheap OLED screens from eBay. With the exception of the init & XY functions (which are more complicated...

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SmileyBox – Statistics, the old fashioned way, upgraded

Wednesday, October 17th, 2018

Vagrearg published a new build: Lies, damn lies and statistics. You have a high school science fair and want to know how your project was perceived by the visitors. Modern online behaviour will direct you to "taking the online survey". That requires an extra step for the visitors, usually by...

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Lattice iCE40 Ultra Plus FPGA: Gnarly Grey Upduino – Tutorial 1: The basics

Tuesday, September 4th, 2018

A how-to getting an LED flashing using VHDL from Harris' Electronics: The cheap price however comes with a few niggles, namely getting it up and running in the first place with the limited documentation. Gnarly Grey do a great job of explaining programming a starting program but don’t say much...

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Posted in Arduino, FPGA | 1 Comment »

Tutorial: Using the Arduino’s internal EEprom to store calibration data and LCD screen fonts

Tuesday, August 28th, 2018

Edward Mallon writes: This is a follow-up to our post about using Nokia 5110 screens on three unused analog lines with shift-out. That saved me from messing with the hardware SPI bus which we reserve for the SD cards. A secondary benefit is that the code is really lean, on...

Posted in Arduino, tutorials | No Comments »

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Recent Comments

  • Joe Desbonnet: Ya, I can recommend the low melting point solder. I used brand 'ChipQuik' and it's amazingly easy to use.
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