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...Tags: Arduino, Pro Micro
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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...Tags: ATSAMD21, computer
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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...Tags: amplifier, MCU, TFA9842AJ
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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...Tags: Arduino shield
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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…)Tags: Arduino IDE, ESP32
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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.Tags: open source, USB
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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...Tags: GPS DISCIPLINED-OSCILLATOR
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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....Tags: data logger, Pro Mini
Posted in Arduino, DIY | 1 Comment »
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...Tags: how-to, RC transmitter
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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...Tags: Arduino IDE, MIDI, Teensy
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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...Tags: data logger, SSD1306
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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...Tags: Arduino Pro Mini
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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...Tags: Lattice, LED, VHDL
Posted in Arduino, FPGA | 1 Comment »
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 »
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...Tags: Arduino IDE, how-to
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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...Tags: Analog Devices, HMC624LP4E
Posted in Arduino, Interface | No Comments »
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...Posted in Arduino, sensors, tutorials | No Comments »
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...Tags: radio
Posted in Arduino, DIY, how-to | 1 Comment »
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...Tags: Arduino Nano, LoRa
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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...Tags: ADC, Arduino, Logger, Teensy
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