Top 10 Wireless Keyboard

top 10 wireless keyboard
    wireless keyboard
  • A keyboard which sends data to a host computer without relying on a physical cord. Most wireless keyboards today employ radio waves, frequently using Bluetooth technology.
    top 10
  • Top 10 is a superhero comic book limited series published by the America's Best Comics imprint of Wildstorm, itself an imprint of DC Comics.
  • Top 10 is a nightly countdown show on the NHL Network of anything hockey, from great performances to memorable moments, some of the most dramatic events in NHL history are ranked. It airs weekdays at 6 PM.
  • a tabulation of the Top 10 for every age 11 and older in ¬†wevery event of all USA SWIMMING competition from the previous season. The short course "Top 16" are published in August and the long course "Top 16" are published every December.

controlbox 2010 v5
controlbox 2010 v5
Front panelview for the 3D hardware box. As you see there are multiple holes. All electronic parts are into this unit. The batteries comes on the front. 10 x AA 2700 mA versions. Multiple leds, keyboard, swithes etc. The LCd display (2 x 16 char) is on the top of the unit ( not to see on this pictures). Tomorrow all holes will be drilled. This will be done on the miller machine for precise position. The electronics contain 3 big parts. The central unit is the CPLD board MAX II from terasic at 50MHz and is the most powerfull part. All timings for highspeed detection, camera synchronisation, flashes drive and wireless remote drive of the extra background flashes. The display unit and the local flash power TTL drive are provided via the ATmega328p controller. The IR detection contain a separate controller with the ATtiny45 chip. This controller measure in 40 usec if an object come in focus and give the information through the CPLD module. The sensivity level on the CPLD module determine if the camera's need to activated. The current version can also work in burstmode. If an insect stay longer in focus multiple pictures can be taken. I will test this and set the rate at 3 pictures/sec to start. But the camera's can shoot faster if needed. There is also a timerkeeper chip, I need it to return in good time at home for the dinner. 4 extra AA batteries are added to work at night to drive the high power leds. The normal autonomy of the batteries will be near 4 hours. The wireless build in unit can drive 4 extra remote flashes in TTL mode. The transmitter works at 868MHz, the european frequence range. The power of all the flashes are controlled into this central unit, even the remote flashes. A special knob let me quicly change 5 steps of 1/3 EV value just by a simple turn. This is helpfull by full white flowers or black objects. The camera's stay always into manual mode, there is no time to measure the environment light. The wireless unit is already tested to a distance over the 30m. But for this type work, the distance is max a few meter. This will help for better background. I have planned 1 week to write the new program, verilog part for the CPLD board and assembler for the ATmega328p controller chip.I know this is very short but multiple parts are done before. The logic analyser help me to test all the hardware and the software and to readout the correct timings even at nsec level. So the 3D setup is on on time as planned. Hope to be ready third week of March. Frans.
fotoopa D100 0894
fotoopa D100 0894
View inside the electronic box. At the right side, the CPLD module mounted on the general interface board. This interface board is almost ready. The left side show the recent added keyboard interface and the switches. This board need to finish. All the I/O connectors are on this box. A few need to mounted on the bottom. (have to hold this connector this weekend from the store) The top screen show the design of the big interface board on the PC. On the output connectors the flatcables need to be connected with the connectors on the frame. Here you see also how the alu box is optimalized for minimum wight. As much as possible parts are milled off. This electronic box can work stand alone. Power is on the backside via 10xAA batteries. On the CPLD board on the right side there are 20 test pins. This pins are only for diagnose via the logic analyser during hard and software update. I can bypass near all the signals from the CPLD and the AVR controller to this pins via software reconfiguration. This methode give me the possibility to wath even the SPI signals on the AVR controllers. This is very helpfull for a fast debugging of the hole unit. The CPLD board can be updated via the USB connector on the top. The PC can give the current for the hole module in this case during the update. The AVR controller ATmega328p have a separate connector to the STK600 module during reconfiguration or software update. The wireless RFM12B module stay on the general interface board and goes via a coax connector to the outside. This wireless module drive 4 extra flashes in TTL mode as background lighting. Flash power control of this remote flashes are done via one of the big buttons on the front panel. The wireless system works on 868 Mhz and have a range of over the 50m. The delay of this wireless system is near 400 usec and adjusted to falls with the onboard flashes so they have exact the same startpoint at 1 usec precise.

top 10 wireless keyboard
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