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Archive for the ‘Arduino’ Category

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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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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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...

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How to use I2C LCD with ESP32 on Arduino IDE

Thursday, July 19th, 2018

A how-to on using an I2C LCD display with the ESP32 using Arduino IDE from Random Nerd Tutorials: This tutorial shows how to use the I2C LCD (Liquid Crystal Display) with the ESP32 using Arduino IDE. We’ll show you how to wire the display, install the library and try sample...

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Controlling an HMC624LP4E RF attenuator using Arduino

Monday, July 16th, 2018

Kerry Wong writes: For simplicity, I used a single rotary encoder for controlling the attenuation. In order to prevent accidentally changing the set attenuation value, I used the built-in switch of the rotary encoder as the lock/adjust control. The idea is that the attenuation value can only be adjusted when...

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Dual ultrasonic sensors combine for 2D echolocation

Friday, July 13th, 2018

A how-to on making a Dual-sensor ultrasonic echo locator by lingib, project instructables here: This instructable explains how to pinpoint the location of an object using an Arduino, two ultrasonic sensors, and Heron’s formula for triangles. There are no moving parts. Heron’s formula allows you to calculate the area of any triangle...

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DIY Arduino FM radio

Monday, July 2nd, 2018

Nick over at educ8s.tv shared detailed instructions of how to build this DIY Art Deco style FM Radio project using Arduino: Let’s see what we are going to build today! As you can see, we are going to build an Art Deco style FM radio receiver. The design of this...

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LoraDunchy Arduino Nano pin-compatibile LoRa module with power management

Thursday, June 28th, 2018

Mare writes: Lora board with Arduino nano compatibile pinout and simple battery management Small board with arduino nano compatibile pinout with power management and Murata ABZ LoRa module with STM32L0 microcontroller Features: -LoRa module: Murata ABZ -Single cell LiPo cell charger on-board with charging signal internally connected to PA11 (via...

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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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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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5 LDO regulator considerations other than voltage and current

Monday, June 4th, 2018

James Lewis over at Bald Engineer writes, "For an AddOhms series, I created a DIY Arduino I am calling the “Pyramiduino.” It is an ATmega328p based board in the shape of a triangle. Other than being cute, the shape does not offer any other benefit. The design features a 3.3...

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Posted in Arduino, tutorials | 2 Comments »

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