The Netduino is an open source electronics platform using the .NET Micro Framework. The board features a 32-bit microcontroller and a rich development environment, making it a perfect solution for engineers and hobbyists alike. Here’s everything you need to know to get up and running with this amazing little micro controller. Follow the link to learn more. [via]
Netduino, a .NET-powered open source electronics platform – [Link]
The LM386 IC is a low voltage power amplifier. The gain is set to 20 but can be changed from 20 to 200 using external components. The basic setup is really simple using only a few components as shown on the schematic above.
Audio Power Amplifier using LM386 – [Link]
In this article learn about to design a step-up converter using MAX756 IC from Maxim. Author is going through datasheet to explore basic setup and he is comparing the schematic with the one found at ladyada’s post.
DIY DC-DC Step-up converter with MAX756 – [Link]
This project shows how to build an audio amplifier inside a Altoids tin box. The speaker, circuitry, AA battery and 3.5mm connector are fit inside the tin. Power is supplied by a Maxim MAX756 Step-Up DC-DC Converter and amplification is done with an LM386 op-amp chip. Follow instructions on the link below.
Altoids Tin Speaker – [Link]
This instructable show us how to build the smallest USB led! It uses a USB plug made with a piece of perfboard, a resistor and of course a led. Basic soldering skills are required to build your own. Follow the instructions on the link below.
The Smallest USB LED – [Link]
This device is a USB port tester that allows you to check any USB port of your computer. To check the operation of USB just plug it and if USB port is working correctly the green led should lit. Also you should receive a “New device detected” message on your operation system. The circuit is very simple to build using a few common components. Check construction details on the instructable link below.
USB tester – [Link]
This project is a small hand held device that allows you to create real-time noise loops with a metallic effect. It is using a microcontroller to create the noise loops and has three controls, tempo, sound and write. In the link below find instructions to build your own crazy looper. Schematics and source code is available. There is also the option to buy a kit.
Crazy Looper – [Link]
This project is a variable speed control for the heater blower in a car. The heart of the circuit is a PIC12F675. PIC is reading the potentiometer value and generates appropriately timed pulses to control the DC motor. Check project details on the link below.
PWM Motor Control – [Link]
This project shows how to build a single button code lock for your garage door. The electronic lock is build around an ATtiny13 and code is written in Basic. The inspiration for this project came from Alan Parekh’s project (called Button Code). The four digit code is entered using one button. First digit is entered then wait for the led to flash and second digit is entered, then wait for led and the next digit is entered… etc. Schematic and project files are available on the link below. [via]
Garage door code button – [Link]