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Ultrasonic Ranging Module HC - SR04


Ultrasonic ranging module HC - SR04 provides 2cm - 400cm non-contact measurement function, the ranging accuracy can reach to 3mm. The modules includes ultrasonic transmitters, receiver and control circuit. The basic principle of work: 
(1) Using IO trigger for at least 10us high level signal, 
(2) The Module automatically sends eight 40 kHz and detect whether there is a pulse signal back. 
(3) IF the signal back, through high level , time of high output IO duration is the time from sending ultrasonic to returning.

Test distance = (high level time×velocity of sound (340M/S) / 2

example : https://wiki.odroid.com/odroid_go/arduino/31_ultrasonic_distance_meter











































Select options referring to the screenshot below, and make sure that FAT32 is selected for the File system.

Click the Start button, then click OK button to proceed.

Then this tool formats SD card as FAT file system.

Linux

Press shortcut ALT+CTRL+T to open a Terminal window.

Find out the device file name for inserted media.

joshua@joshua-desktop:~$ sudo fdisk -l...Disk /dev/sdc: 7.4 GiB, 7948206080 bytes, 15523840 sectorsUnits: sectors of 1 * 512 = 512 bytesSector size (logical/physical): 512 bytes / 512 bytesI/O size (minimum/optimal): 512 bytes / 512 bytesDisklabel type: dosDisk identifier: 0x00000000 Device     Boot Start      End  Sectors  Size Id Type/dev/sdc1        2048 15523839 15521792  7.4G 83 Linux

In my case, /dev/sdc is that name.

Unmount the partitions for the SD card.

joshua@joshua-desktop:~$ sudo umount /dev/sdc?

Enter the following command to format as FAT.

joshua@joshua-desktop:~$ sudo mkfs.fat /dev/sdc1mkfs.fat 4.1 (2017-01-24)

Eject and insert again the SD card.
And Enter the command below to check if the SD card is mounted well and the partition is FAT.

joshua@joshua-desktop:~$ df -ThFilesystem     Type      Size  Used Avail Use% Mounted on.../dev/sdc1      vfat      7.4G  4.0K  7.4G   1% /media/joshua/3B5E-B96C

Download the skeleton files and move them

Download Skeleton file 
Uncompress and you can see 2 directories, odroid and roms.

Move them into the top-level of the FAT formatted SD card.

Move your games

  • Move the games to the proper directory under the /roms directory of the SD card.
    • Generally, the name of the target directory is the abbreviation of the system.
    • e.g. If you have some Sega Master System games, move it to /roms/sms directory.

Move the games to the proper location of the SD card.

  • Additional ROMs can be added to the appropriate folder in /roms:
    • nes - Nintendo Entertainment System
    • gb - Nintento GameBoy
    • gbc - Nintendo GameBoy Color
    • sms - Sega Master System
    • gg - Sega Game Gear
  • ROM files must be decompressed (unzipped) and have the same extension as the folder in which they are placed.

Enjoy

Insert that prepared SD card into your ODROID-GO and turn on the power.

  •  - A card could not be detected. Ensure the card is properly inserted.
  •  - Files are not properly written to the SD card, or its contents are corrupted.


Then the Emulator imports the games automatically so that you can play them right away.

  • Left/Right - select game system to emulate.
  • A - show available ROM for the emulator selected.
  • B - returns to a previously active ROM.


ROM Selection

  • Up/Down - select a file.
  • Right/Left - change the page of displayed files.
  • A - select a file.
  • B - return to Main Menu.
  • After selecting a file, a progress bar will be displayed. The blue gauge shows erase progress while the green gauge shows flash progress. Emulation begins after the green gauge is full.

ODROID Ultrasonic Ranging Module for ODROID-GO

  • Brand: Hard Kernel
  • Product Code: ODROID Ultrasonic Ranging Module for ODROID-GO
  • Availability: In Stock

  • 7.19€