Consolite – a Tiny Game Console on an FPGA


Robert Fotino has design a video game system on a FPGA. He writes:

For my latest project, I am diving back into Verilog to create the hardware side of Consolite. For those who don’t know, Consolite is the name I’ve given to my design of a tiny hobbyist game console and associated software toolchain. In my previous posts, I demoed a compiler that translates from a flavor of C to Consolite Assembly, an assembler that translates from Consolite Assembly to binary files, and an emulator that runs the resulting binaries.

Consolite – a Tiny Game Console on an FPGA – [Link]

Butchered USB TTL Serial Adaptor


Aaron Brady writes:

We popped open the case, and there were two main ICs, a Prolific 2303 (the USB to Serial IC) and a ADM3251E (the RS232 line level convertor). I tried to desolder this with no success, but Bas stepped in, cut the leads with a craft knife and ran the iron over the chip’s leads and it basically fell off. He also did the very fine soldering to pins 1 and 5 of the Prolific chip, TX and RX respectively.

Butchered USB TTL Serial Adaptor – [Link]

Learn how to play sound with Arduino by building a DIY Micro Piano

In this video we are going to learn how to make sound with Arduino. We are going to build a simple Micro Piano in order to demonstrate the capabilities of the tone function. Let’s start!

Playing back sound is great for adding audio feedback to our projects. So far we were using displays or LEDs in order to provide feedback to the user of the project. Today we will learn how to make sound with Arduino and as you are going to find out, it is very easy.

In order to demonstrate the sound capabilities of the Arduino Uno, I have built a simple project, a micro Piano. Each time I press a button, Arduino makes a sound of a specific frequency for each button. The frequencies correspond to specific music notes, we have 7 buttons, so we can have 7 notes! So, let’s try it. I am going to play a simple song using the available notes.

Learn how to play sound with Arduino by building a DIY Micro Piano – [Link]

WiFiRGB – A WiFi-enabled RGB high-power LED


Tom blogged about his WiFi/Browser controlled RGB LED project:


Simple hardware, using pre-fabricated modules

Controls an RGB LED via any recent browser, any operating system

WiFi credentials can be configured via browser

Software is written as an Arduino sketch

WiFiRGB – A WiFi-enabled RGB high-power LED – [Link]


samDEV_09 – Mini devboard for Atmel’s SAMD09 ARM Cortex M0+ Microcontroller


A Basic board to test the Atmel SAMD09. On board there is also a CH340 uart to usb bridge

Build this board to getting started with the SAMD microcontroller family after I made the mistake to try the much bigger SAMD21 first. The SAMD09 used here is he smallest from this family and therefore has the shortest (still 709 p.) datasheet. I think this board will be, as my other microcontroller breakout boards, very useful for an early prototyping phase on breadboard. So far I quite like the SAMD09. If you compare it to the the ATmegas there are a lot more possibilities. Maybe this is the Arduino Nano killer for me.

samDEV_09 – Mini devboard for Atmel’s SAMD09 ARM Cortex M0+ Microcontroller – [Link]

Simple nanosecond-width pulse generator provides high performance


by Jim Williams @

If you need to produce extremely fast pulses in response to an input and trigger, such as for sampling applications, the predictably programmable short-time-interval generator has broad uses. The circuit of Figure 1, built around a quad high-speed comparator and a high-speed gate, has settable 0- to 10 ns output width with 520 ps, 5V transitions. Pulse width varies less than 100 ps with 5V supply variations of 65%. The minimum input-trigger width is 30 ns, and input-output delay is 18 ns.

Simple nanosecond-width pulse generator provides high performance – [Link]

Micro-supercapacitor fits inside IoT chips


by Jan Buiting @

Zero-power autonomous devices will abound on the IoT of the future, and battery manufacturers are scratching their heads to come up with the best possible solution ensuring high energy and power density at miniature scale. A new material developed recently at Finland-based VTT shows promise, based on energy and power density of a supercapacitor depending on the surface area and conductivity of the solid electrodes. The size? So small it fits inside an IC.

Micro-supercapacitor fits inside IoT chips – [Link]

Bargraph Current Meter 0-1A Range – PIC16F686


Tiny Bar-Graph current meter displays a Red color bright, easy to read display of current range from 0 to 1A.  This Bar-Graph has 20 segments in single color and display 0 to 1Amp Current. The Barograph current monitor is based on PIC microcontroller with 10 Bit resolution ADC.  This high performance measurement provides unique capabilities and can be used in various applications. The Bargraph can display 0 to 1Amp with 20 LED with 50mA (Approx.) resolutions.  Each LED output provided with Solder- jumper for output set point can be configured for control, alarm, Relay Trigger, ideal solution to check the DC Motor current. It is mainly used to measure low side current.


  • Supply 7.5 V to 18V DC (Direct 5V Input Possible)
  • Input 0 to 1Amps across onboard shunt resistor (Max Load supply 48V)
  • Output Display 20 Color RED SMD LEDs
  • Compact Board with SMD Components
  • Supply input Header Connecter
  • On Board 5V Regulator
  • Solder Jumper on each LED for Output Control, Alarm, and Relay

Bargraph Current Meter 0-1A Range – PIC16F686 – [Link]

Electromagnetic Field Detector using an Arduino


by LightBug @

In today’s instructable I’m going to show you how to build your own electromagnetic field meter using an Arduino. This device can be used to detect mains voltage, static electricity and radiations from certain devices.

Electromagnetic Field Detector using an Arduino – [Link]


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