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Papilio One: 4 bit binary counter

Shane Ormonde9 years ago1 month ago04 mins

FPGA implementation of a 4 bit binary counter. Hardware was described using VHDL. The Papilio One comes with a 32 MHz clock but this was divided down to 0.5Hz so you could actually see the counter counting. VHDL code: The LEDs were just thrown on a bit a stripboard like so (with 0805 resistors soldered…

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  • FPGA
  • Papilio One

Papilio One : Flashing an LED at a specific frequency

Shane Ormonde9 years ago9 years ago03 mins

To flash an LED at a specific frequency we need to divide the input clock frequency. In VHDL this can be done using counters. The Papilio One FPGA board comes with a 32MHz oscillator. 32Mhz means 32 million pulses per second, if you wanted to divide this down to 1Hz you could just set an…

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  • FPGA
  • Papilio One

Papilio One FPGA board , using a switch to turn on an LED

Shane Ormonde9 years ago1 month ago01 mins

Put this together just to start learning a bit about VHDL coding. The logic is simple, if input P4 (the switch) is low, output P3 (the LED) is high, and vice versa. The circuit diagram is shown below:

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  1. Mikhail Grushinskiy on OpenWave : Development of an Open-Source and Low-cost wave sensorMarch 6, 2023

    I’ve wrote something similar: Estimating wave height from IMU accelerometer on a moving boat https://bareboat-necessities.github.io/my-bareboat/bareboat-math.html code: https://github.com/bareboat-necessities/wave_height_from_IMU

  2. Artsy on Laser cut carboard planetary gearJanuary 30, 2023

    I absolutely love this! Thank you for making this video and sharing your file. I will be making projects with…

  3. Raffi on Matchbox Car v2 (fail)December 11, 2022

    You could just resolder another ATtiny? Cool Blog, thanks for putting your stuff out there!

  4. irfan on atmega16u2 virtual serial example using LUFA LibraryMay 28, 2021

    this device is used for what

  5. wattnotions on OpenWave : Development of an Open-Source and Low-cost wave sensorFebruary 28, 2021

    Hi Alex, Once I had the vertical acceleration to displacement script working, I could use it on any set of…

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