Led Puck is a board that consists of a few leds, an accelerometer a controller and a mcu. The accelerometer senses the titl of the board and lights up the approprite led lights, telling you the direction that the board is titled. Follow the link to see a video of the device in action. Cool!
LED Puck: Tilt sensing led board - [Link]
This accelerometer logger is a logger unit for measure forces on a roller coaster and save them to a SD-card. This is the fifth version of this unit. It’s also possible to modify the software in the unit so it can measure other things if it can be connected to a i2c-bus. I use a LIS3LV02DQ from ST-Microelectronics to measure the forces, a uALFAT from ghielectronics.com to manage the SD-card, a HCMS2915 display and a PIC16F876 to control every thing. I also use a Canon NB-4L battery (the same model i have in one of my cameras) to power the unit.
Accelerometer-logger with SD-card memory - [Link]
Krzysztof Marcinek writes:
The main aim of this project was to design my very own home theater system. The first unit I wanted to build was 7.1 preamplifier. Searching the net I found Mark Hennessy site with great preamplifier project. This was really good starting point. With no need for my own researches on analog stage, I decided to expand this project with more inputs, more channels and better power supply. The unit don’t provide any kind of decoding DD, DTS etc. Surround input accepts only analog signal from external decoder, such as Denon DVD 1920 in my case.
DIY Home Theater Preamplifier - [Link]
Want to please your friends or family, then make Christmas gift by yourself. This is nice looking blue LED clock project which can be made without significant efforts. Clock looks really nice when decorated with smoked gray acrylic. It has two push buttons for selecting time and alarm, while another two are for setting hours and minutes. The project heart is Atmega835 microcontroller and PCF8563P RTC module. Clock source is written by using WinAVR compiler.
Blue clock gift project - [Link]
With this project you can show the temperature on you PC. This thermometer plugs on any free serial port. It gives temperature readings accurate to 0.5°C with no calibration.The project consists of the AVR 2313 Project board and the DS1621 Thermometer board and software for the PC.
AVR PC Thermometer - [Link]
With this circuit you can control two unipolair stepper motors in full step mode via the RS232 serial port of your PC. A terminal program such as Hyperterminal can be used to control the stepper motors. The stepper motors can be driven one at a time.
- Drives two unipolair stepper motors in full step mode
- Accepts commands via the serial port of your PC.
- Can be used with any OS that has a standard terminal program such as Hyperterminal.
- Drives stepper motors up to 24V, 500mA
- Power supply ………………….12-24 VDC
PC Stepper Motor Driver - [Link]
This mod is based on PIC18F2550 and WG24064A 240×61 graphical LCD with T6963 controller. Download eagle schematics and firmware files to flash. To feel full power of this mod also download Winamp Open Source LCD plugin. This mod works only under Win2k and Win XP. [via]
Spectrum analyser mod for PC - [Link]
uCHobby does an instruction MindBite video about Digital Multimeters (DMM). You can view the MindBite here. In this short article I describe the new MindBite service and how I constructed a camera stand by modifying an old swing arm desk lamp.
MindBites is a new community service that should be very popular with the Maker crowd. The site offers Hot-To videos that are uploaded by users. Some of the videos are free but most cost a bit more then a dollar to view. You can upload your own instruction video and when it’s viewed MindBites pays you $1.
MindBite DMM 101 - [Link]