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by eried
Wed Jul 12, 2017 8:27 am
Forum: Troubleshooting
Topic: pi zero w test pads for extra USB [solved]
Replies: 21
Views: 10512

Re: pi zero w test pads for extra USB

Just to close up the original question, there is only 1 USB port in the Zero W, but I did solved the issue about the reboots. I wired the usb directly to the input and added a 227 uF capacitor (between VCC and GND) plus a 0.5 Ohm 1W resistor (input VCC to output VCC). The pi does not reboot now on h...
by eried
Sun Jul 09, 2017 3:17 pm
Forum: Troubleshooting
Topic: pi zero w test pads for extra USB [solved]
Replies: 21
Views: 10512

Re: pi zero w test pads for extra USB

It's worth noting that hot plugging USB devices to the original model A and B Pi's also caused them to crash & reboot. The model B+ (and later models) have extra power management circuitry in the 5V USB power supply to allow hot plugging of USB devices, among other things. This USB power management...
by eried
Sat Jul 08, 2017 8:00 pm
Forum: Troubleshooting
Topic: pi zero w test pads for extra USB [solved]
Replies: 21
Views: 10512

Re: pi zero w test pads for extra USB

I'm seeing the same hotplug reboot problems, with the official 2.5A power supply connected to the pwr-in micro USB connector. So a better power supply may not help, unless powering via the extension connector? Is you inductor cracked? I discovered that mine is, so maybe that is the source of the pr...
by eried
Fri Jul 07, 2017 9:32 am
Forum: Troubleshooting
Topic: pi zero w test pads for extra USB [solved]
Replies: 21
Views: 10512

Re: pi zero w test pads for extra USB

fruitoftheloom wrote: The RPi Zero has a single USB BUS, you can not connect 2 devices as USB works on Master Slave principal it will not be able to I/O to both devices....
I see... the main issue is that the pi reboots sometimes when plugging a device :/
by eried
Fri Jul 07, 2017 6:34 am
Forum: Troubleshooting
Topic: pi zero w test pads for extra USB [solved]
Replies: 21
Views: 10512

Re: pi zero w test pads for extra USB

maybe you are right and it is the same port FTFY. There is only one USB port. The test points are connected to it. Don't get confused by the power connector which has no data lines. can I put a 10 uf cap between vcc and gnd to avois the reboots when hotplugging? Worth a try, but 10μF may not be eno...
by eried
Thu Jul 06, 2017 10:47 pm
Forum: Troubleshooting
Topic: pi zero w test pads for extra USB [solved]
Replies: 21
Views: 10512

Re: pi zero w test pads for extra USB

The Pi Zero only has one USB port, to have more USB connections you need to connect it to a USB hub. I don't know what pads are under there but I suspect they are just connections to the pins in the USB socket. If you try to have two devices directly connected to the same port things aren't going t...
by eried
Thu Jul 06, 2017 9:33 pm
Forum: Troubleshooting
Topic: pi zero w test pads for extra USB [solved]
Replies: 21
Views: 10512

pi zero w test pads for extra USB [solved]

Hi everyone,

I am trying to add an extra usb port for connecting and arduino using the back test pads in the zero w but sometimes when I plug the arduino the pi sometimes reboots itself.

Is that "extra" usb usable? Do I need extra circuitry?

Thanks
by eried
Wed Aug 06, 2014 11:10 am
Forum: Graphics, sound and multimedia
Topic: Powerpoint slideshows on the Pi
Replies: 0
Views: 1133

Powerpoint slideshows on the Pi

Howdy! I made a simplistic presentation software, with a standalone presentation player that runs in Mono. Called Power Speck :lol: It includes a software to convert from and to PowerPoint (2003 to 2013 versions) using MS PowerPoint interoperation (converter uses MS Office PowerPoint 2010 or newer i...
by eried
Wed Apr 23, 2014 12:25 pm
Forum: Camera board
Topic: Low-level access to camera output?
Replies: 46
Views: 5946

Re: Low-level access to camera output?

If you only have programmed in windows you can just call raspistill from .net (it is slow, 1.6 fps because it's using the still port, not video port) but it is really simple to use adding mono to the pi, example: http://www.raspberrypi.org/forums/viewt ... 43&t=74847
by eried
Tue Apr 22, 2014 5:09 pm
Forum: Camera board
Topic: Low-level access to camera output?
Replies: 46
Views: 5946

Re: Low-level access to camera output?

In picamera there is a way to take stills from the video feed (because raspistill at best reaches <2 fps using the process signaling shutter), anyone knows if is easy to mod raspistill to use the video feed? I haven't checked a lot of the code but it seems requires to learn a lot of mmal stuff
by eried
Sun Apr 20, 2014 3:55 am
Forum: Camera board
Topic: Low-level access to camera output?
Replies: 46
Views: 5946

Re: Low-level access to camera output?

picamera is quite fast to retrieve snaps when you set video mode, check it out, you will probably will get 11 fps or more with decent resolution
by eried
Thu Apr 17, 2014 3:46 am
Forum: Camera board
Topic: STICKY: New features for raspistill command
Replies: 106
Views: 114465

Re: New features for raspistill command

There is a way to use the video stream in the signal/enter_key mode in raspistill?
by eried
Thu Apr 17, 2014 1:10 am
Forum: Other programming languages
Topic: ssh connection with C#
Replies: 2
Views: 2619

Re: ssh connection with C#

I made this https://github.com/eried/RPiCustomizer (not fully functional yet) with Renci.SshNet, works very nice!
by eried
Wed Apr 16, 2014 8:50 pm
Forum: Camera board
Topic: using signal/keypress mode? or grab still from live video?
Replies: 1
Views: 628

Re: using signal/keypress mode? or grab still from live vide

Some people claims they are getting >5 fps streaming small images with mjpg-streamer but I think is not the case because they are just using the same file from /tmp/ (so probably mjpg-streamer is just duplicating some frames). Have you found any solution to this? I am looking how to grab stills from...
by eried
Wed Apr 16, 2014 7:01 pm
Forum: Camera board
Topic: Raspicam from C# Mono
Replies: 0
Views: 1619

Raspicam from C# Mono

Hello, here is how to use the raspicam using a small wrapper in raspistill for these ones who want to makes their apps in C# mono :) using System.Diagnostics; using System.Drawing; using System.IO; namespace RaspiCamera { internal class RaspiStill { private readonly Process _p; private readonly byte...
by eried
Mon Feb 10, 2014 4:07 am
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: USB sniffer?
Replies: 2
Views: 3046

Re: USB sniffer?

Thanks for the answer, too bad isn't possible :|
by eried
Fri Feb 07, 2014 6:25 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: USB sniffer?
Replies: 2
Views: 3046

USB sniffer?

I want to sniff 2 devices (arduino host usb -> calculator, to troubleshoot the arduino "host" side) there is any chance to get the raspberry to act like a man-in-the-middle and save the usb traffic between these 2 ones? There is a beaglebone (not black) project that does this but I don't have that b...
by eried
Mon Feb 03, 2014 4:36 pm
Forum: Troubleshooting
Topic: Weird 3v3 voltage in my Pi
Replies: 2
Views: 420

Re: Weird 3v3 voltage in my Pi

It sounds like your ground connection is actually the 5v supply rail i.e. 3.3v - 5v = -1.7v which is close to -1.8v http://elinux.org/RPi_Low-level_peripherals#General_Purpose_Input.2FOutput_.28GPIO.29 Richard S. duh! you are totally right! thanks a lot! (adafruit's gpio adapter was reversed :cry: )
by eried
Mon Feb 03, 2014 4:09 pm
Forum: Troubleshooting
Topic: Weird 3v3 voltage in my Pi
Replies: 2
Views: 420

Weird 3v3 voltage in my Pi

I am getting -1.8V in the 3v3 pin :S (I have 2 ones, they both work but I am trying to detect a IR sensor signal in the GPIO7 and I just receive noise).

Can anyone confirm that the 3v3 pin gives 3.3V ?
by eried
Fri Oct 18, 2013 3:06 am
Forum: Automation, sensing and robotics
Topic: Simple Pi UPS with 2 batteries
Replies: 18
Views: 12969

Re: Simple Pi UPS with 2 batteries

Awesome design!
by eried
Sun Sep 15, 2013 7:40 pm
Forum: Troubleshooting
Topic: Ralink rt2870/3070 Raspberry Pi/Linux FIX!!!!!
Replies: 17
Views: 40455

Re: Ralink rt2870/3070 Raspberry Pi/Linux FIX!!!!!

Step 1: you mean in the forum links? Where it says download it here <- there is no link :P
by eried
Sun Sep 15, 2013 9:31 am
Forum: Troubleshooting
Topic: Ralink rt2870/3070 Raspberry Pi/Linux FIX!!!!!
Replies: 17
Views: 40455

Re: Ralink rt2870/3070 Raspberry Pi/Linux FIX!!!!!

Worked nicely with a $4 USD dongle from eBay
It will be nice if you append the files here too.

Also: wireless-power off should be added to /etc/network/interfaces file
by eried
Sat Jun 29, 2013 7:08 pm
Forum: General programming discussion
Topic: Custom logo and disable video
Replies: 0
Views: 491

Custom logo and disable video

Hi!

Anyone knows how to launch a "custom logo" thru the screen while the pi is booting and then replace it with a video? (or some window from 1 program only), hiding raspbian boot and console, etc
by eried
Sat Jun 29, 2013 12:44 am
Forum: Español
Topic: Idea para electrónicos: servos por salida de audio.
Replies: 5
Views: 1807

Re: Idea para electrónicos: servos por salida de audio.

¿Qué impide utilizar 2 o más servos por los pines digitales?

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