Ever miss the simple days of using a PC’s LPT1 parallel port to bit-bang GPIO over 8 output pins and 4 input pins of the DB-25 connector? I sure do. My first design project as a BSEE graduate in 1993 was to design a LPT1 controlled test fixture for the Motorola MDT-9100-T data terminal (shown below). Those were the days. By multiplexing 12 parallel port pins into 74HC dip CMOS latches and transceivers my te ...

Hardkernel has produced a single-unit version of its four-unit, 32-core Odroid-MC1 cluster computer for running Docker Swarm, Build Farm, and other parallel computing applications. The design offers greater flexibility for users to combine Odroid-MC1 Solo units for a “single unit, 2, 3, 4, 5, 6, or n stackable cluster”. The octa-core Odroid-MC1 Solo costs $48. Combing one or more So ...

This instructable shows how to build a rather special pool sensor measuring the pool temperature and transmitting it via WiFi to Blynk App and to a MQTT broker. I call it the "Crocodile Solar Pool Sensor".It uses the Arduino programming environment and an ESP8266 board (Wemos D1 mini pro). What's so special about this project? The look is just greatFully independent from power sources (solar panel feed ...

Relive the fun of early computer game music with an authentic 8-bit chiptune synthesizer, which you can control over MIDI from the comfort of any modern DAW software. This simple circuit uses an Arduino to drive an AY-3-8910 programmable sound generator chip (or one of its many clones) to recreate that 1980's sound. Unlike the many designs that need specialised software to edit music, this looks l ...

Zeta is a Single Board Computer (SBC) from Diamond Systems that combines a COM Express Mini Type 10 module based on Apollo Lake or Bay Trail SoCs with a DAQ-rich carrier, and a heat spreader mounted below. The Zeta COM Express Mini Type 10 supports the quad-core Atom E3940 and Pentium N4200 from Intel’s Apollo Lake generation, as well as a dual-core Atom E3825 from the earlier Bay Trail family. Measures 84m ...

The Canada based company Intrinsyc has announced the Open-X 8M System on Module (SOM) a month ago. Now Open-X 8M is followed up with a Mini-ITX form factor Open-X 8M Development Kit build. The kit includes a GbE port, dual USB 3.0 ports, M2 expansion, and much more user-friendly features. Open-X 8M SOM The Open-X 8M SOM can run Linux and Android 8.0 on the high-end Quad model of the i.MX8M, the same model u ...

If you’ve got a car built in the last 5 years or so, it’s quite likely it’s started by the push of a button when in the presence of a keyfob. Older vehicles make do with the twist of a key. Of course, starting a car by voice command would be cool, and that’s what [John Forsyth] set out to do. The build uses a Macbook to handle voice recognition, using its Dictation feature. With a hefty download, it’s capab ...

https://youtu.be/C8IPaMl1wTk Berry Racer is a game that I came up with and programmed using Arduino's Software. The game is run on a Teensy microcontroller which is connected through a custom PCB (Printed Circuit Board) to a Screen, a Joystick, four buttons, and a piezo speaker. The board can be powered through the micro USB port on the Teensy or with a battery that can be plugged into the back of the PCB, ...

Story Why: We built the Pirl Charger because we were unhappy with the quality of existing chargers. Few consumers know they gradually ruin their expensive devices by using poor quality chargers that deliver high noise, high ripple energy. Every consumer device comes with a charger, and those are usually well-built, but they usually have only one port, and if you lose it, you usually buy an aftermarket charg ...

After some years of experimenting with Arduino, I decided that the time has come to share the knowledge I've acquired. So I here it goes, a guide to Arduino, with the bare basics for beginners and some more advanced explanations for people who are somewhat more familiar with electronics. Every step will consist of a detailed explanation, then a summary, followed by a more advanced approach. If you're a comp ...

Adafruit has today announced the Adafruit Feather Bluefruit Sense development board will be soon arriving in their online store, building on the popular Feather nRF52840 Express, by adding a range of sensors that can be accessed wirelessly. The Feather microcontroller is equipped with Bluetooth Low Energy connectivity together with native USB support featuring the nRF52840. Offering an ‘all-in-one’ Arduino ...

Going all the way hack to the heady days of Eee PC modding, hardware hackers have been on the hunt for small USB hubs that can easily be liberated from their enclosures and integrated into whatever project they happen to be working on. From time to time you see recommendations out there for makes and models which lend themselves to this sort of repurposing, but it’s seemed more difficult than necessary to s ...