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Bluetooth remote controllable (Lego) cars

How it started It started with the idea to make a technical proof of concept combining the Physical Web and WebBluetooth. The Physical Web is an effort by Google to allow interacting with "things" without fiddling around with installing apps or setting anything up. The basic idea behind that is that the "thing" broadcasts a web URL for the client to interact with it. You can read more about it here: https:/ ...

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wozItDo: Tiny IQ puzzel, BIG challenge

Hardware components: Atmel ATTiny85 × 1 LED (generic) × 3 Resistor 221 ohm Or similar, I used 220 ohm × 3 SparkFun Pushbutton switch 12mm or similar × 1 Coin Cell Battery Holder × 1 Coin Cell Battery CR2032 any 3v cell that fits is fine × 1 Hand tools and fabrication machines: Soldering iron (generic) Story I think of this puzzle as the electronic equivalent of those annoying "IQ" puzzles (e.g. where you ha ...

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Yet Another Z180 (YAZ180) Project

I’m thinking about a new project, something a little unusual but still with a rich history of information upon which to base the build. On Tindie, I found the RC2014 project which is a build of a Z80 platform but based on some modern components. That got me thinking. My next project must be a Z80 based project. Why the Z80? Well, it was at one stage the most used CPU in the world, which leads to the great d ...

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ESP8266 Wifi enabled 8×64 pixel LED matrix display

This project is a modification of my previous Bluetooth-enabled LED matrix display project, which used 8×64 monochromatic LED matrix (total 512 LEDs) for displaying scrolling text message. The original project used Bluetooth for display data transfer from a smartphone, but this one now uses Wifi. The display message is sent through web browser to a ESP8266 module that is configured as a web-server. No Ardui ...

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ATmega32 Switch Toggle Program

ATMega32 switch code is extremely simple to implement, and this article looks into how to write the code to make an LED light up when a switch is pressed. The atmega32-switch-code.c program tests the switch input to the ATMega32 Development System. There are many ways to write the code, but I have chosen the simplest way possible so everyone can understand. Therefore, instead of using “case”, I am using “if ...

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ATmega32 blinking LED Lights

Using the ATMega32 microcontroller to flash or blink some LEDs is extremely simple and this tutorial shows how to make a blinker circuit including the example program code to blink eight LEDs. In this tutorial, you will learn how to make a program to blink eight LEDs sequentially, how to generate the hex file in AVR Studio, and how to transfer it into the ATMega32 memory using PonyProg2000. This is a multi- ...

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7 Segment LED Based SPI Display using 74HC595

Single Digit Big Display module using 74HC595 IC project will display large size 7 segment single digit number. 3.5inch height, which can be visible over large distance. More digit can be connected serially to each other easily connector. This circuit is a single digit seven segment big display using a set of 5 LEDs per segment and a shift register for easy control by micro-controller input. Each of the LED ...

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