Search found 63 matches

by horo
Fri Oct 09, 2015 11:51 am
Forum: V-USB
Topic: powerSwitch Component
Replies: 1
Views: 2559

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: 3626

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
by horo
Fri Dec 13, 2013 1:26 pm
Forum: V-USB
Topic: V-USB certification non-compliance details
Replies: 2
Views: 3705

Re: V-USB certification non-compliance details

Hi,

some more facts about non-compliance.

Ciao, Martin
by horo
Mon Jul 22, 2013 9:46 am
Forum: V-USB
Topic: HID Faster Transfer Rate
Replies: 2
Views: 5821

Re: HID Faster Transfer Rate

Hi,

Some time ago I checked the USB polling rate depending on device descriptor parameters (for MIDI device): http://forums.obdev.at/viewtopic.php?f=8&t=1352&start=15#p9104

Ciao, Martin
by horo
Thu Jun 13, 2013 10:19 am
Forum: V-USB
Topic: clocking my usb pulls
Replies: 2
Views: 3306

Re: clocking my usb pulls

Hi ulao, My typical solution is to use an normally unused port pin that will be set on start of code and reset after completion. With an oscilloscope you can watch this port and e.g. the usb ports. -> http://forums.obdev.at/viewtopic.php?f=8&t=1352&start=15#p9040 Ciao, Martin
by horo
Wed Jan 02, 2013 6:57 pm
Forum: V-USB
Topic: USB MIDI Interface
Replies: 93
Views: 237181

Re: USB MIDI Interface

How many MIDI Event Packets can you send in one go? ... So I guess I have my answer, but I'd like to know where it's documented please! Hi winelight, You're right, two packets with a total of eight bytes is the maximum. USB MIDI transfers are defined as bulk transfers which are not allowed for low ...
by horo
Thu Sep 20, 2012 10:09 am
Forum: V-USB
Topic: Problem to compile a program with V-USB library [SOLVED]
Replies: 15
Views: 16951

Re: Problem to compile a program with V-USB library [SOLVED]

Tytower, you are rude and ignorant. You come here, hijack a thread formerly marked as solved and claim that the project has to fit your needs.
<*)))><
from my side EOD
by horo
Thu Sep 20, 2012 9:37 am
Forum: V-USB
Topic: Problem to compile a program with V-USB library [SOLVED]
Replies: 15
Views: 16951

Re: Problem to compile a program with V-USB library [SOLVED]

... Well thats a pretty cheeky ,rude,assunptive and completely wrong post. ... Why the crap? The pot calling the kettle black The previous poster and the answers given indicate that he needed a Makefile so obviously there is not a Makefile supplied for the basic driver if he had to make up one hims...
by horo
Tue Sep 11, 2012 1:24 pm
Forum: V-USB
Topic: V-USB doasnt work on atmega32 12MHz (mouse)
Replies: 7
Views: 8024

Re: V-USB doasnt work on atmega32 12MHz (mouse)

Hi, Priority is sorted from low to high vector number (from ATmega32 data sheet): Vector No.; Program Address; Source; Interrupt Definition 1 $000 RESET External Pin, Power-on Reset, Brown-out Reset, Watchdog Reset, and JTAG AVR Reset 2 $002 INT0 External Interrupt Request 0 3 $004 INT1 External Int...
by horo
Tue Sep 11, 2012 10:26 am
Forum: V-USB
Topic: Bidirectional USB2MIDI converter
Replies: 3
Views: 4630

Re: Bidirectional USB2MIDI converter

Hi,
The Win7 issue and possible solutions were discussed earlier on "the other MIDI thread".

Ciao, Martin
by horo
Tue Sep 11, 2012 9:24 am
Forum: V-USB
Topic: avr-gcc-4 vs avr-gcc-3
Replies: 8
Views: 8153

Re: avr-gcc-4 vs avr-gcc-3

Anyway, I managed to get a 25 strip of 4313 so I'm ok now with 4K flash. I couldn't find these in EU so I had to order them from the States. According to their online catalog segor in Berlin has them on stock as DIP and SO: ATtiny4313-PU: 3.40€ (10+: 2.72€) ATtiny4313-SU: 3.60€ (10+: 2.88€, 37+:2.1...
by horo
Tue Sep 11, 2012 9:12 am
Forum: V-USB
Topic: V-USB doasnt work on atmega32 12MHz (mouse)
Replies: 7
Views: 8024

Re: V-USB doasnt work on atmega32 12MHz (mouse)

Should i connect the int0 pin? If yes how should I connect this? usbconfig.h /* General Description: This file is an example configuration (with inline documentation) for the USB driver. It configures V-USB for USB D+ connected to Port D bit 2 (which is also hardware interrupt 0 on many devices) an...
by horo
Mon Sep 10, 2012 2:14 pm
Forum: V-USB
Topic: avr-gcc-4 vs avr-gcc-3
Replies: 8
Views: 8153

Re: avr-gcc-4 vs avr-gcc-3

It is always good to have some extra space. Try to use a chip with larger flash. It is quite common that you may like to add something in the future. You're right - BUT - when you want to use USBaspLoader located in the boot block you're limited to 2K boot block size on ATmega8, 88, 16, 168 even wi...
by horo
Mon Sep 10, 2012 1:50 pm
Forum: V-USB
Topic: V-USB doasnt work on atmega32 12MHz (mouse)
Replies: 7
Views: 8024

Re: V-USB doasnt work on atmega32 12MHz (mouse)

Hi,

Did you also connect INT0 pin?

Ciao, Martin
by horo
Mon Sep 03, 2012 10:24 am
Forum: V-USB
Topic: Using a voltage divider, any problems?
Replies: 3
Views: 4674

Re: Using a voltage divider, any problems?

Hi,

Regarding the voltage divider solution we had a discussion two years ago with detailed calculation of hi and lo levels:
http://forums.obdev.at/viewtopic.php?f=8&t=1352&start=45#p16316

Ciao, Martin