Turn-key PCB assembly services in prototype quantities or low-volume to mid-volume production runs

ATmega32 starter board with LCD

Everybody that are starting with microcontrollers need some starting point – I mean a development board where they can prototype various projects and figure out how things works in embedded world. Atmega32 should be enough for many tasks you chose as it is featured with 32KB flash, 2KB SRAM and 1KB EEPROM and even more handy interfaces. This DIY Atmega32 development board has a standard alphanumeric LCD, RS232 interface to connect to PC, four programmable buttons, two additional buttons to generate external interrupts and DS1307 RTC chip – for easy time counting without occupying microcontroller’s resources. The board comes with standard 7805 voltage regulator, so any DC voltage sources up to 12V can be attached. If you are interested in following features just grab this design. It has no SMD’s so there should be no problem for everybody to build. Continue reading

The Coolest MV Speedometer

We normally find the speedometer on the vehicles, as it’s one of the most important devices that measure the speed of a vehicle simultaneously. The speedometer was invented by the Croatian Josip Belusic in 1888. In the beginning, it’s known as “velocimeter” rather than speedometer. It started being used in the early 1900s and became standard equipment for every vehicle by 1910 onwards. Speedometer is not being used in the land vehicles, but also in boats (pit log) and aircrafts (airspeed indicator) too. Many of the modern speedometers are in digital/electronic form. A rotation sensor that usually mounted on the rear of the transmission is for delivering a series of electronic pulses to the rotational speed of the driveshaft. The computer is uses to convert the pulses to a speed and displays the speed on an electronically-controlled digital display. Today’s project is very special, as it’s a MV speedometer that specially designed for coilgun projectiles. In this case, you’ll need to determine the speed of coilgun projectiles while experimenting usually counted the frames of high speed camera and filming the… Continue reading

DIY small general purpose TV terminal

Did you have a situation when you simply needed a big screen for viewing information from your embedded device? Probably yeas. First thing you thought – maybe I need bigger character or graphical LCD, or more 7 segment LEDs. One issue is to send data via serial terminal to your PC, but what if it is occupied. Then look around and probably your eyes will stop by TV. This construction is simple terminal which can be connected as module to any embedded device and act as simple terminal hooked to TV. It’s features are: Display mode: black and white; Text mode: 40 characters x 25 lines; Semigraphic mode: 80 x 75 “points”; Printable characters: ASCII 32 – 127; Keyboard: IBM PC AT compatible; Control characters: 11; Serial line speeds: 1200 Bd to 115.2 kBd; Power supply: 9 – 12 V or 5V; Current consumption: cca 30 mA + keyboard consumption. So you can have great terminal screen with lots of space for seeing multiple information at one time. All that joy is controlled by Atmega8 microcontroller which is clocked at… Continue reading