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Recent content by BGAman

  1. BGAman

    Android- Gyro Sensor drift and Correct angle Estimation

    Google for "angle estimation", "gyro drift correction", "direction cosine matrix" and "kalman filter" - you cannot cancel drift with gyro itself. You need an accelerometer (and maybe magnetometer, which depends on application) as reference for gyro drift cancelling.
  2. BGAman

    Noise canceller Mode in ATmega32

    Re: Noice Cancellor Mode in ATmega32 In noise cancelling mode, CPU is in sleep state for A/D conversion time - no HF noise generated. Interrupt wakes CPU from sleep state just after A/D conversion is finished. Variable "adc_data" is global and is probably declared elsewhere.
  3. BGAman

    LCD JHD162A interface wid pic 16F877

    Hi, what frequency you are running your PIC? From datasheet minimum pulse width for EN is 230ns or 450ns and data setup 80ns or 195 ns, so your EN = 1; asm("nop"); EN = 0; is not enough! Minimum E cycle frequency is 1ms, so __delay_ms(1) between commands is enough. I also recommend place one NOP...
  4. BGAman

    [SOLVED] how to program to rotate 3 pin dc servo motor in anti clock wise direction using keil

    Hi, assuming "3 pin dc servo motor" means classic RC servo, your control signal must be: - period 20ms - positive pulse 1us to 2us - 1.5 us = neutral (center) - 1us maximum anti clockvise - 2us maximum clockwise This signal can be generated by PWM (Timer) block or by software. If it is not RC...
  5. BGAman

    PIC18F pwm signal to RC ESC for control brushless motor..need help.

    Hi, at first refer to maual of your ESC, because all of today's ESC have inbuilt check for control pulse width and correct position of throttle stick on RC transmitter after power up. If ESC is not satisfied with input signal characteristic, then it makes beep..beep and maybe many other nice...
  6. BGAman

    explain the different layers in orcad layoutplus?

    In OrCAD and other similar systems, power and ground layers are treated as planes. Thery are displayed inverted for drawing speedup, so pads in those layers are holes in copper plane. If you need only one ground and one power, use power and ground plane. If you need multiple power lines (3.3V...
  7. BGAman

    Diplaying User Defined Graphics on alphanumeric LCD

    cm2040 lcd Commads dedicated for writing into CGRAM is completely missed in your LCD.C and LCD.H. Have you read any datasheet of character LCD? Try one from attachment. On page 12 you can see complete commands for LCD control. Because character LCD drivers are compatible for long time, these...
  8. BGAman

    Diplaying User Defined Graphics on alphanumeric LCD

    alphanumeric lcd rountines If it is character LCD with "standard" controller (probably yes), you have first eight chars (code 0..7) of character generator located in CGRAM. You can define bit pattern i 5x7 pixels for each char in CGRAM a load it to LCD just after initialization. I used it many...
  9. BGAman

    schematic to vhdl converter?

    convert schematic to fpga I'm not using it, because i write code directly without schematic, but in OrCAD Capture you can create project for CPLD / FPGA design. Toolbar for Compile / Synthesis / P&R and simulation appears next to standard toolbars. Then you can draw schematics with sybols...
  10. BGAman

    Help me develop a graphical interface to display values on a TV set

    Re: graphical interface FPGA is probably best way. You can generate arbitrary video signal and make some hardware acceration for graphics. Here is link to VGA controller, character generator and bouncing ball implemented in XILINX FPGA: **broken link removed** and here Pong game example...
  11. BGAman

    I need a XILINX Spartan3 XC3S400-FT256 ORCAD CAPTURE Symbol

    orcad symbol xilinx You are right - my misunderstanding. I use @ltera's FPGA and in QII is possible to export .PIN file, than can be used for some automation of creation Capture symbol, but i don't know Xilinx. So, yes, it is tedious...
  12. BGAman

    I need a XILINX Spartan3 XC3S400-FT256 ORCAD CAPTURE Symbol

    xilinx fpga orcad symbol - Layout Plus 10.5.0, but maybe in sooner versions too. - From Layout's shell select Tool/Library Manager - Library Manager runs. - In Library Manager's menu select library and then click Create new footprint button. Dialog appears. In lower section of dialog called...
  13. BGAman

    I need a XILINX Spartan3 XC3S400-FT256 ORCAD CAPTURE Symbol

    xilinx orcad lib With pad array generator in OrCAD library manager about ten minutes or less...
  14. BGAman

    Lattice Vs Xilinx and altera

    Consider: - Availability of devices - Availability of support Buy starter kit and try... IMHO @ltera seems easier to learn than Xilinx.
  15. BGAman

    schematic to vhdl converter?

    vhdl to schematic It depends on CAD sofware. OrCAD, PADS a others may have VHDL generators. Instead you may use Qu@rtus or ISE schematic editor and redraw your design entirely. Presonally, I do'nt use schematic entry - direct writing VHDL code is better. Regards Pavel.

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