The closer you look, the less you see!
Randapparatuur op de Raspberry Pi (USB)
In the days of 2012-2016 it could be a struggle to get a displayLink scrren working, needed to compile the Linux core again with some “udlfb” libs, well….it seems all integrated out of the box these days!, you just need …
With this python script you can retrieve serialnumber from USB devices (if present), you need to install pyusb first: sudo pip install pyusb Please note: You must run the python script with SUDO in front, otherwise you have no access to the devices …
With this python script you can capture keyboard (emulators) and barcode scanners trough evdev (event device), this way the part of code will only execute when the device is sending keys:
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from evdev import * dev = InputDevice('/dev/input/event1') print(dev) for event in dev.read_loop(): if event.type == ecodes.EV_KEY: print(categorize(event)) |
output:
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key event at 1383327570.147000, 2 (KEY_1), down key event at 1383327570.147990, 2 (KEY_1), up key event at 1383327570.148997, 3 (KEY_2), down key event at 1383327570.150010, 3 (KEY_2), up key event at 1383327570.151009, 29 (KEY_LEFTCTRL), down key event at 1383327570.151009, 42 (KEY_LEFTSHIFT), down key event at 1383327570.152017, 36 (KEY_J), down key event at 1383327570.153005, 36 (KEY_J), up key event at 1383327570.154004, 29 (KEY_LEFTCTRL), up key event at 1383327570.155005, 32 (KEY_D), down key event at 1383327570.155993, 32 (KEY_D), up key event at 1383327570.157002, 48 (KEY_B), down key event at 1383327570.158015, 48 (KEY_B), up key event at 1383327570.158997, 48 (KEY_B), down key event at 1383327570.282002, 18 (KEY_E), up key event at 1383327570.283004, 49 (KEY_N), down key event at 1383327570.284005, 49 (KEY_N), up key event at 1383327570.284968, 18 (KEY_E), down |
Another python script example:
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import evdev from evdev import InputDevice, categorize # import * is evil :) dev = InputDevice('/dev/input/event1') # Provided as an example taken from my own keyboard attached to a Centos 6 box: scancodes = { # Scancode: ASCIICode 0: None, 1: u'ESC', 2: u'1', 3: u'2', 4: u'3', 5: u'4', 6: u'5', 7: u'6', 8: u'7', 9: u'8', 10: u'9', 11: u'0', 12: u'-', 13: u'=', 14: u'BKSP', 15: u'TAB', 16: u'Q', 17: u'W', 18: u'E', 19: u'R', 20: u'T', 21: u'Y', 22: u'U', 23: u'I', 24: u'O', 25: u'P', 26: u'[', 27: u']', 28: u'CRLF', 29: u'LCTRL', 30: u'A', 31: u'S', 32: u'D', 33: u'F', 34: u'G', 35: u'H', 36: u'J', 37: u'K', 38: u'L', 39: u';', 40: u'"', 41: u'`', 42: u'LSHFT', 43: u'\\', 44: u'Z', 45: u'X', 46: u'C', 47: u'V', 48: u'B', 49: u'N', 50: u'M', 51: u',', 52: u'.', 53: u'/', 54: u'RSHFT', 56: u'LALT', 100: u'RALT' } for event in dev.read_loop(): if event.type == evdev.ecodes.EV_KEY: data = evdev.categorize(event) # Save the event temporarily to introspect it if data.keystate == 1: # Down events only key_lookup = scancodes.get(data.scancode) or u'UNKNOWN:{}'.format(data.scancode) # Lookup or return UNKNOWN:XX print u'You Pressed the {} key!'.format(key_lookup) # Print it all out! |
Output: …
Specificaties (eng): Model: WUSB300N Ports: USB Port LEDs: Power, Link/Act Detachable (Yes/No):No Modulations: 802.11b: CCK, QPSK, BPSK 802.11g: OFDM Wireless-N: BPSK, QPSK, 16-QAM, 64-QAM RF Pwr (EIRP) in dBm: 802.11b: 14±1 dBm (Typical) 802.11g: 14±1 dBm (Typical) Wireless-N: 14±1 dBm …
Informatie (ENG): Logitech has announced that it will release a new USB headset for the PlayStation 2 later this month. The headset will feature a digital USB processor, as well as a noise-canceling microphone to improve audio quality. It will …
Deze pagina beschrijft het afspelen van audio op een Raspberry Pi, zowel via de Jackplug als een USB soundcard. Ik heb onlangs een Logitech Socom (blijkt een PS2 headset) gekocht in de kringloop voor 1 euro:
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Bus 001 Device 004: ID 046d:0a01 Logitech, Inc. USB Headset |
Om audio af te spelen …
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TwinMOS 73-TMWBS-001 FCC approval date: 02 July 2003 Interface: USB USB 1.1 Connector: Male A Form factor tags: dongle FCC ID: QS3WBSZP1 WI1 chip1: ZyDAS ZD1201 WI1 chip2: Philips SA2400A Antenna connector: U.FL IEEE 802.11b High Rate Standard Compliance Supports …
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