Search found 61 matches

Go to advanced search

by horo
Thu May 24, 2018 5:01 pm
Forum: V-USB
Topic: Added more free USB-IDs
Replies: 0
Views: 315

Added more free USB-IDs

Hi, Just saw on github that Christian added some new free PIDs 0x27df, 0x27e0, 0x27e1, 0x27e2. That's the complete VID/PID list from USB-IDs-for-free.txt: Table if IDs for discrimination by textual name: PID dec (hex) | VID dec (hex) | Description of use ==============+===============+==============...
by horo
Fri Jan 26, 2018 7:17 pm
Forum: V-USB
Topic: D+ and D- on different ports
Replies: 2
Views: 485

Re: D+ and D- on different ports

Hi SamFozz,

I don't know if you can use different ports, but it is possible to use the pin change int instead of INT0:
viewtopic.php?f=8&t=11057

Ciao, Martin
by horo
Thu Jan 11, 2018 5:26 pm
Forum: V-USB
Topic: Hobby project design
Replies: 1
Views: 413

Re: Hobby project design

Hi,

You cannot use VUSB to act as an USB master (e.g. your laptop), it is the implementation of the slave protocol (e.g. USB mouse, keyboard,...). If you want a simple USB master you can use a RaspberryPi with libusb.

Ciao, Martin
by horo
Thu Jan 11, 2018 5:15 pm
Forum: V-USB
Topic: ATmega328p with internal RC oscillator?
Replies: 6
Views: 769

Re: ATmega328p with internal RC oscillator?

Where do you get that doubling of the frequency? The internal RC oscillator of the ATmegas is specified for 8 MHz. The with the OSCCAL register one can push it to around 13 MHz, but that's about it. In general: micronucleus has some code that tries to calibrate the OSCCAL on the frame time of the U...
by horo
Thu Dec 14, 2017 11:10 am
Forum: V-USB
Topic: ATmega328p with internal RC oscillator?
Replies: 6
Views: 769

Re: ATmega328p with internal RC oscillator?

Hi, Did you also try the 16.5 MHz version? If I look at the F vs. OSCCAL drawing on p. 607 of the datasheet* with split OSCCAL and you use the default starting value of 128 you're in the upper half that starts with 6..6.5 MHz (-> clock frequency 12..13 MHz) and grows. Better use the lower half, star...
by horo
Tue Oct 03, 2017 8:40 pm
Forum: V-USB
Topic: Using Pin change interrupt instead of INT0
Replies: 2
Views: 710

Re: Using Pin change interrupt instead of INT0

Yes, you can do so. I did it for an ATtiny85, have a look at my project here in the forum . You have to define it in the file usbconfig.h ... /* ----------------------- Optional MCU Description ------------------------ */ /* The following configurations have working defaults in usbdrv.h. You * usual...
by horo
Sun Aug 13, 2017 9:32 pm
Forum: V-USB
Topic: Understanding USB better to use V-USB
Replies: 2
Views: 721

Re: Understanding USB better to use V-USB

Very extensive documentation: USB in a NutShell, Making sense of the USB standard.
Ciao, Martin
by horo
Wed Jul 05, 2017 12:14 pm
Forum: V-USB
Topic: USB_CFG_DESCR_PROPS_STRING_PRODUCT dynamic?
Replies: 2
Views: 1490

Re: USB_CFG_DESCR_PROPS_STRING_PRODUCT dynamic?

Hi ulao, I did this in my MIDI project to allow a dynamic naming via an e.g. address switch to have more than one devices connected and recognized. Please have a look at the source code at my bitbucket . Unfortunately I have not time to deep dive into my code, so please try it at your own - but as a...
by horo
Sun Jun 11, 2017 11:25 am
Forum: V-USB
Topic: V-USB Cable
Replies: 2
Views: 900

Re: V-USB Cable

Hi,

Welcome to V-USB - do you know this project overview? It shows some very tiny HW solutions, e.g. the Haunted USB Cable.

Ciao, Martin
by horo
Sun Apr 02, 2017 5:41 pm
Forum: V-USB
Topic: USB MIDI Interface
Replies: 93
Views: 81577

Re: USB MIDI Interface

Hi, me again. I've cleaned up the attiny85 midi code at bitbucket , added pwm out and a 2nd analog input. Possible tested I/O functions are: PB0: Digital input or digital output or pwm output. PB1: Digital input or digital output or pwm output (active high LED attached). PB2: Digital input or digita...
by horo
Thu Mar 30, 2017 6:31 pm
Forum: V-USB
Topic: USB MIDI Interface
Replies: 93
Views: 81577

Re: USB MIDI Interface

Hi, after a quite long time I've added a new demo project - V-USB-MIDI-ATtiny85. Runs on a real cheap development board, e.g. Digispark - available as china clone for about 1..2 € or $. https://cdn.instructables.com/FJI/GKJ2/IDWXMS4L/FJIGKJ2IDWXMS4L.MEDIUM.jpg https://www.mikrocontroller.net/attachm...
by horo
Thu Feb 16, 2017 5:02 pm
Forum: V-USB
Topic: DHT11/DHT22 humidity sensor reader advertisment
Replies: 5
Views: 1622

Re: DHT11/DHT22 humidity sensor reader advertisment

No, I can see the schematic - also the other links are working.

Ciao, Martin

Image
by horo
Mon Feb 01, 2016 7:16 pm
Forum: V-USB
Topic: Pin / port choice for usb data
Replies: 1
Views: 939

Re: Pin / port choice for usb data

Hi,

Have a look:
https://forums.obdev.at/viewtopic.php?f=8&t=6322
http://vusb.wikidot.com/examples (Scroll down to "Other interrupts than INT0 for USB")

Ciao, Martin
by horo
Fri Oct 09, 2015 11:51 am
Forum: V-USB
Topic: powerSwitch Component
Replies: 1
Views: 1009

Re: powerSwitch Component

Hi, These are the 8 relays (K1-K8) that switch the power via their contacts. LSP3-LSP10 are the external connections for the switched AC power. But if you have difficulties in reading these easy schematics you shouldn't connect this circuit to the mains - you will become tiny, ugly and black if you ...
by horo
Mon Mar 16, 2015 4:24 pm
Forum: V-USB
Topic: USB Caps Locker
Replies: 3
Views: 1306

USB Caps Locker with 3.5V

Hi,

Another solution would be to cut the connection to USB pin 1 (Vcc) and insert either a red SMD LED or two normal SMD diodes in series to drop the voltage from 5V down to about 3.5V - that's close enough to the 3.3V from the specs. I never had problems with the two-diodes-solution.

Ciao, Martin

Go to advanced search