Miniature usb capslocker, this is exactly the same as original project, i have made even smaller board. Dimensions are: 2.5mm x 11mm x 12mm, used pcb can not be thicker than 0.75mm, else it wont fit into USB.
Source:diy.elektroda.eu/
Electronic business card / scroll display. 85 SMD 0805 led’s matrix display, Atmega88V uController, and couple of other smd parts. Dimensions are 24mm x 85mm, supplied from 3V small coin battery. It will work for long time, even on discharged battery (2V). After button is pressed, device is waking-up from power-down mode and start scrolling [...]
Having made some of these earlier, I decided to add a few more for the Christmas season. These light boxes, or signs are easy to make, very low cost (the only thing I have to buy is the lights). Lights used are mini-incandescent lamps that are low watt, low heat regular Christmas lights.
Source: Creativeman
I have a DVD player, a VHS video, and a mini-DV video camera. I record off the mini-DV to my PC, I’m also recording VHS to digital in a similar way. Sometimes I take audio-video from the DVD to the PC.
I used to feed composite-video to my PC’s graphics-card, and the audio to Line-in via [...]
HAPPY BIRTHDAY TEHNIK SERVICE
It’s been two years since we launched Tehnik Service and we never expected it to have the enormous success it’s had. Beside that my baby girl Elizabeta is celebrating its first (1) birthday.
Ili na naso kazano Sreken Rodenden. Aj saa da odam da praam TORTA:)
When doing more than one thing at the same time it is very easy to lose track of time. Exposing PCBs to UV light is delicate work and overexposing will result in, well, you know what. Housing for the exposure system shouldn’t be a problem because those old broken PC scanners come very cheap.
Device operation:
-two [...]
Got sick of the high prices of Home Security systems ?? have old mobile sets don’t know what to do with ? build a cheap alarm system that will notify you on your mobile by SMS. ready ?? grab the tools !
What you’ll need
An old mobile phone set with supply (charger). Cheap door magnetic [...]
I made from an ordinary popcorn machine. In basic it works by a fan blowing air past a heating element through the green coffee beans. By controlling the fan speed, I was able to control the temperature of the air roasting the beans. But, the roasting process turned out to be quite hands on, as [...]
The primary means of viewing DjVu documents. It runs inside most modern browsers including IE, Firefox, and Safari.
DjVu Browser is a fast, compact and powerful DjVu viewer for Windows with tabbed interface, continuous scrolling and advanced printing options.
Download: Djvu-Browser
This submini USB scope is based on a Atmel Tiny45 cpu and cost less than 5€ with a homemade pcb.
It has 2 analog inputs and can supply 5V ont the 4 pins header on the right. One of the inputs can be scaled down with the trim pot.
The firmware in the Tiny45 is written [...]
This project is a 4 channel DMX512 driver board. It features four power MOSFETs that can be configured to operate in PWM mode or as on/off outputs. The driver can be configured to use any four consecutive addresses across the full 512 channel address range. It can be used to drive LED arrays or low [...]
This project allows instant start sequentially but a dozen low-voltage lamps 12 V / 60 W, and makes them fade and always sequentially (but slower). This system has been designed to meet the demand of a visitor who wanted ten recessed low voltage spot in a driveway to his house, with the following function: – [...]
This circuit allows switching on a LED when the battery voltage (12V) drops below a certain threshold. The operating system is based on a comparison of tension, which comes in a zener diode. If the supply voltage is 12V and the zener diode is a 10V model (this is the case in the diagram), we [...]
This is a good looking and practical device that can be useful in many areas where countdown timer is needed. This project is based on the PIC16F84A microcontroller. The time range can be adjusted between 1 and 999 seconds. This project has 3 buttons and one of them is named Set Button. In order to [...]
A VU meter is often included in audio equipment to display a signal level in Volume Units; the device is sometimes also called volume indicator (VI). In this project we are building a basic and low cost LED VU Metre circuit . The extent (range) display is -18 dBu to +3 dBu, spread over [...]
Today we have a new category “Projects” and a new electronic project 12 Channel LED Chaser with PIC16F84A.
This project is based on the popular PIC16f84A micro-controller.The heart of this project LED chaser is the PIC16F84A PIC microcontroller.A 4MHz crystal and capacitors C1 and C2 22pf is used for providing clock pulses to the micro-controller. The [...]
