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> Pic microcontroller gps nixie clock in-18 dst tubesaver
Pic microcontroller gps nixie clock in-18 dst tubesaver
What is included and what is not
NCV2.1-18 is the nixie clock kit without the enclosure. The kit contains all required electronic parts, both PCBs and 72x gold-plated "Digi-Key" receptacles for tube's pins as well as preprogrammed PICmicro microcontroller. Mechanical assembly parts are included as well.
The IN-18 nixie tubes and column separator bulbs are not included.
Board is not assembled and is provided as a kit.
Wall-cube power supply and GPS receiver are not included. You can get them in your local store. GPS receiver is optional, clock is fully functional without it.
The clock is professionally designed using the cutting-edge tools and technologies. PCBs are routed in consideration with termal dissipation, shortest paths, signal interference and shielding. The best FR4 material is used. All electronic parts are the best quality and comes from the famous producers such as: Philips, Microchip, Texas Instruments, STM, Maxim-Dallas, International-Rectifier, Yageo, Jauch, Maxell, Tokin, Bourns, ACP, Jamicon and others.
The clock's firmware is driven by operating system and is able to work in multitasking mode. Several industrial protocols are involved and dozens of tasks and algorithms are coded. It is quite complex and contains many thousands of code lines. It is programmed so that all settings and tube's lifetime counter values are stored in the battery back upped memory and are kept safely during the power outage. Moreover, time and date are still counted when the clock has no power. An absolute accuracy may be achieved using GPS synchronization. Clock is fully functional without a GPS receiver.
Current version of firmware: v1.3.
Programmable leading zero suppression
Programmable DST correction (custom rules for various countries including new rules for USA and Canada introduced in 2007)
Leap year correction
Programmable column separators
Programmable tubes shut-down during night time
Crossfading with selectable deep
Selectable refresh rate of tubes
Tube's lifetime counter (16-bit)
GPS time and date synchronization
Cathode poisoning prevention
Sandwich design ensures optimal occupied space and shape
Through hole components for easy assembling
Microchip PIC16F876A main controller
Real Time Clock with battery back-up (CR2032 Lithium battery)
Tube's drive mode: 3x2 multiplex
High voltage power supply with PWM control and software shut-down
Power supply: 9-12V @ 500-1000mA DC; 5.5/2.1mm jack with positive inner
Incorrect polarity and current over-consumption protections
High precision (10ppm) timebase XTAL
Video clip of running clock (divx codec is required)
