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#4610 Question about PC Duino Contest

Posted by jim on 30 November 2014 - 09:14 AM

Hi, I am doing some work with the pcduino lite wifi and would like to participate with my project, I would like to know if it has to be an open source hardware/software project. Should I reveal my source code and Eagle files?


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#4609 pcDuino contest hosted by CuteDigi

Posted by jim on 30 November 2014 - 09:14 AM

http://www.cutedigi....mpetition-2014/


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#6128 Event postings only here please.

Posted by cwilt on 27 January 2015 - 12:48 PM

Please only post event related questions in this area.

 

Thank you.


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#9177 Commercializing

Posted by MattGeerts on 04 March 2015 - 08:52 PM

Please forgive my lack of understanding of GPL.

 

Can I buy pcDuino3's and use them in a system that I build, install my own Linux software and sell?

 

Do I need to display any logos or make my code available? My code is all original, but uses open source libraries, and I believe pcDuino is open source hardware, yes?

 

For example (this is not my actual project)

I buy pcDuino3, install Motion package to detect motion on camera and write software to drive a laser pointer pan/tilt servo system to point to the moving object. I package it up and sell it.

 

Please let me know if I am staying true to the GPL and not stepping on any legal toes!

 

Would LinkSprite be willing to sell me 100, 500, 2000 pcDuino3's when I go full production?

 

Thank you,

Matt


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#3586 GPS Shield With SD Card Slot for Arduino V2.0 A

Posted by chain on 18 September 2014 - 01:00 AM

I can not receive GPS data. I used these instructions at http://learn.linkspr...gps-v2a-shield/ . Set TX->D2 and RX -> D3, SD Formatter


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#11329 Armbian, Linux for arm boards - 16.9.2016

Posted by igorpec on 23 September 2015 - 07:15 AM

Popular ARM Linux distribution is expanding support to Linksprite boards.

 

What is Armbian?

  • Debian Wheezy, Jessie or Ubuntu Trusty based distribution specialized for ARM developing boards.
  • Dedicated repository with own kernel development (apt.armbian.com) and full or manual automated updating.
  • Open development on Github
  • Vibrant support community.
  • Reference: Cubieboard image, since 12/2013

Can I run it on Linksprite boards?

 

Currently only pcDuino3 nano is supported but we are planning to expand board base in the future. If you are skilled, you can adopt this base and use it on other boards.

 

http://www.armbian.com/pcduino3/

http://www.armbian.com/pcduino3nano/

http://www.armbian.com/pcduino2/

 

There are two main kernel options:

 

Vanilla kernel

  • Kernel 4.7.3 with large hardware support, headers and some firmware included
  • Docker ready
  • Bluetooth ready (working with supported external keys)

Bugs or limitation

  • No on board audio support (comming soon) or IR driver, no HW accelerated video

 

Legacy kernel

  • Kernel 3.4.112 with large hardware support, headers and some firmware included
  • Enabled audio devices: analog, HDMI, spdif and I2S (if wired and enabled in HW configuration)
  • IR functional and preconfigured – tested with LG remote
  • IR transmit driver
  • Bluetooth ready (working with supported external keys)
  • I2C ready and tested with small 16×2 LCD. Basic i2c tools included.
  • SPI ready and tested with ILI9341 based 2.4″ TFT LCD display.
  • Drivers for small TFT LCD display modules.
  • Clustering / stacking
  • USB redirector – for sharing USB over TCP/IP (disabled by default /etc/init.d/rc.usbsrvd)
  • Onboard LED attached to SD card activity (script.bin)

Bugs or limitation

  • NAND install script sometime fails. Dirty but working workaround: install Lubuntu to NAND with Phoenix tools and run the nand-install again.
  • Shutdown results into reboot under certain conditions.
  • Due to bad PCB placement, there is some crosstalk between Wifi and VGA in certain videomodes (Cubietruck)
  • MALI driver fails to compile

 

Base features:

  • Debian Wheezy, Jessie or Ubuntu Trusty based. Compiled from scratch
  • Root password is 1234. You will be prompted to change this password at first login
  • First boot takes longer (around 3min) than usual (20s) because it updates package list, regenerates SSH keys and expand partition to fit your SD card. It will reboot one time automatically. Second boot also take little longer (around 3min) because it creates 128MB emergency swap space
  • Ready to compile external modules. Tested with this wireless adapter
  • Ethernet adapter with DHCP and SSH server ready on default port (22)
  • Wireless adapter with DHCP ready if present but disabled (/etc/network/interfaces, WPA2: normal connect or AP mode)
  • desktop environment upgrade ready
  • NAND, SATA and USB install script included (/root)
  • Serial console enabled
  • Enabled automatic security update download for basic system and kernel. Upgrades are done via standard apt-get upgrade method
  • Login script shows board name MOTD with current PMU temp, hard drive temp, ambient temp from Temper if exits, actual free memory & battery conditions.

Performance tweaks:

  • /tmp & /log = RAM, ramlog app saves logs to disk daily and on shut-down (Wheezy only)
  • automatic IO scheduler. (check /etc/init.d/armhwinfo)
  • journal data writeback enabled. (/etc/fstab)
  • commit=600 to flush data to the disk every 10 minutes (/etc/fstab)
  • optimized CPU frequency scaling 480-1010Mhz with interactive governor (/etc/init.d/cpufrequtils)
  • eth0 interrupts are using dedicated core

 

Build your own kernel or image with Armbian build tool.


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#9326 Samba swat package

Posted by JDat on 14 March 2015 - 10:03 PM

Where to find and how to install swat (web config for samba) package? 

sudo apt-get install swat

 not working. apt-get can not find package named swat


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#9308 Cannot find Wi-fi after SD card boot (pcduino3 nano)

Posted by Olioli on 13 March 2015 - 09:23 PM

Hello!

I have followed the steps to clone the entire system from NAND to an SD card using board-config.sh on pcduino3 nano equipped with Wi-fi dongle (http://store.linkspr...o-raspberry-pi/), after updating the whole system.

After rebooting, the pcduino boots indeed from the SD card but the wi-fi connection no longer works.

If I try "Wicd Network Manager", no wireless networks are detected.

Strangely, using "lsusb" I can see the wireless dongle is detected. I noticed that the LED on the wi-fi dongle is off when I boot from the SD card.

If I remove the SD card and boot from the NAND, the wi-fi dongle LED is on, wi-fi is here, internet works so the problem does not come from the wi-fi dongle.

I would like to boot from the SD card and have internet through wi-fi at the same time, are there some extra steps I could do to achieve this?

I am using image and kernel downloaded from linksprite website (linaro 3.4.79+). 

Thanks for your help! :)


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#7685 Quotation of cameras

Posted by jim on 13 February 2015 - 07:47 PM

I'm a resercher at Pontificia Universidad Católica del Perú. I'm making a project about face recognition. I'd like to know if your cameras infrared have a library or a comand in opencv. Or if you have any other camera that use Opencv. Please sent me a quotation to evaluate. I hope your response. Thanks.


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#656 OpenWRT on the Cuhead Pro - audio drivers needed

Posted by chain on 08 May 2014 - 12:51 AM

I've been working on adding audio support to the Cuhead Pro's module 
(USR-S12). Perhaps you or your sourcing office would have more sway with 
the vendor than I would.

The module itself contains firmware built with the Ralink SDK, with 
Linux kernel 2.6. It comes shipped with the ES8155 driver already 
compiled in, however it isn't part of the mainline linux kernel. I have 
created a .dts file for the module such that all the devices show up 
properly to OpenWRT, but unless there is an audio driver, there will be 
no sound :(

USR says that 'technical support is only available for bulk purchasers', 
so could you please ask them about the es8155 driver source code please?


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#6011 GPS Bee support

Posted by David on 22 January 2015 - 05:56 AM

Good afternoon,

 
My name is xxx and I am writing from Argentina. I have recently bought a Linksprite GPS Bee with a SKM58 module. 
 
I am having trouble to read and decode NMEA sentences type  GPZDA, which would allow me to determine date and time variables from the signals received through the satellites.
 
According to the datasheet I attach, the module supports the following NMEA-0183 messages: GGA, GLL, GSA, GSV, RMC, VTG and ZDA. However,  the module default NMEA-0183 output is set up GGA, GSA,RMC and GSV (not ZDA).
 
I wanted to ask you if you could send me any information about how to configure the module so that the output also shows ZDA sentences.
 
Thanks in advance,
 
Best regards,
 
xxx

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#5761 Persistent screen resolution

Posted by MarkB789 on 09 January 2015 - 06:05 PM

I'm trying to set the screen resolution to something more than the default ( is it 800x480?).

 

I can do the  "sudo board-config.sh" and choose a new resolution, and save it. But when the system reboots it goes back to the default.

 

I have a large TV connected via HDMI, and when I tried 1680x1050 it looked good, until the next reboot that is.

 

I looked in some other posts, and it suggested the Board-config.sh route, is this something that differs on the Lite model?

 

Mark B

 

pcDuino Lite Wifi  P0013165


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#5631 SM-5100B technical support

Posted by chain on 05 January 2015 - 09:00 AM

I currently have 2 x SM5100B modules, and none of them work.
I also have 1 x Sparkfun breakout board and 1 x my prototype board
1 x SM5100B modules used to work, now it does not.

On both the Sparkfun board and my prototype board I am able to get successful serial communications with the SM5100B module. Both boards have a dedicated power supply for the SM5100B module.

I believe I know at least partially why the SM5100B's do not work and the reason is because they cannot successfully communicate with the SimCard at start-up. One of the SM5100B that originally could communicate with the SimCard at start-up is now unable to.

If I look at the voltage profile of the power (VCC - SM5100B pin 51) there are some differences that I can see between when the module originally worked and what I can see now. I will try to describe what I have found:-

---With the SM5100B working and the Sim Card Inserted---
The VCC voltage rose to about 0.88v after SM5100B initialisation and held 0.88V consistently.

---With the SM5100B working and no Sim Card Inserted---
The VCC voltage rose to about 1.8v after SM5100B initialisation and then dropped back down to 0v after less than 1 second.

---With the SM5100B not working and Sim Card Inserted---
The VCC voltage rose to about 0.05v after SM5100 initialisation and has and now output ripple voltage of about 0.01v.

--- With the SM5100B not working and no Sim Card Inserted ---
The VCC voltage stays at 0.0v and does not move.


The conclusion that I have come to is that the 2x SM5100B are now not working because they are unable to communicate with the simards. This is also the reason they are not able to communicate with the cellular network. The reason that there is no communication between the SM5100B and the simcard is because the SM5100B is not able to power the simcard correctly at start-up. Please note that I have 5 simcards and I am validating them in my phone to ensure they are still working correctly.

Originally only of the SM5100B's worked with both the Sparkfun board and my prototype. Now none of them work.

What can I do to get both the SM5100B modules working? I intend to use my prototype board for production where I have already organized to sell at least 300 items and so it is worthwhile for me to get to the bottom of this issue.

Please let me know if you need any pictures or other material of my results. I am willing to do whatever it takes to help and resolve this issue.


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#4429 nfcpn532sheild arduino

Posted by chain on 05 November 2014 - 05:06 AM

When loading in the demo software i get this message each time 
PN532 nfc(SCK, MISO, MOSI, SS);
can you please help 


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#11529 Why does pcDuino use 4 dram chips?

Posted by huiui on 25 October 2015 - 05:41 AM

I am just curious, Is there a reason that pcDuino use 4 dram chips (4X1Gb)?  

Is it OK for me to just put one big dram chip (4Gb, for example) if I am designing a board around A10/20 SoC?

 


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#8175 PCduino3 for home automation and security initial result

Posted by jim on 14 February 2015 - 04:27 AM

Hi Guys,

I  am on and off on my home "big project"  and had much time on last week to test surveillance camera system with ZoneMinder + MQTT(with other services that are not running properly as now:P).

my PCduino3 is running Ubuntu 14.04 LTS with PCduino3 kernel without X running.
command line rocks!!!

on Zone minder as surveillance system:
everything seems running smoothly, viewing camera or setting motion detection were not problems
But... one issue... motion detection algorithm on zoneminder must be pick wisely, since PCDuino3 (A20) does not have good raw processing:(.  fast algorithm is the best pick. I am still tweaking all params to minimize false triggers.

MQTT broker, Mosquitto is running perfectly for months and serve 2 MQTT client without issue for months...
one issue, I still deciding to move nodejs and other services to VM on my esxi, due on limited raw processing cpu on A20.

since I would like to make all in one automation and security (including surveillance) with PCDuino3, but  cpu raw procsessing seems not capabale doing that :|.

I wish A8X evolve as "open source" A20 with  native SATA support. well I am dreaming at the moment.

one solution is overclock A20 and put a big heatsink.. but reluctantly to do taht, since  needed to be ran 24/7.

end of initial report.

other option:
I bought two of IFC6410 for us$180 including shipping during promo  two months ago.
1.7 GHz Quad Core Krait™ CPU class processing powered by Snapdragon 60

has been play  3 weeks ago and seems solid performance on raw processing in android 4.2
installing ubuntu on IFC6410 takes much effort at the first time since need propietary  blob that can be downloaded form IFC android package. 

the search is still continuing for all in one solution for low embedded system without $$$$$ spending


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#6610 Rover bot in English

Posted by cutedigi on 12 February 2015 - 05:02 AM

Need help on software setup on windows 7 for both camera and controls for the linksprite rover. I can connect to the wifi, but can't get the camera or motors to work.

Everything is written in chines and there is no good tutorials on how to set this up.

Any help is greatly appreciated. 


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#5506 Linker RTC module

Posted by jim on 22 December 2014 - 06:50 PM

I ordered 4 RTC modules from your website (http://store.linksprite.com/rtc-module-of-linker-kit-for-pcduino-arduino/) and understand that battery is not included. Therefore I have to buy elsewhere. But what is the exact battery model? On this above web page, it says the button battery model is CR1225, however, inside the photo shown, it shows “CR1220”. Could you please clarify it? Many thanks.


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#5049 5v Adapter for 2A

Posted by jim on 05 December 2014 - 01:39 AM

We also need sources for:  
USB power cable with low voltage drip at 2A

 

Low cost but adequate 5v Adapter for 2A

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#4394 RS 485 PLC Modules

Posted by jim on 27 October 2014 - 03:32 PM

I am investigating the possibility of utilising PLC technology for connecting some RS485 based field devices to a data concentrator module.

 

The technology will be used for monitoring data from the filed devices only over the mains.

 

Hard wiring the data cables to the escalators is an extremely difficult task so we are considering PLC communications.

 

I have some questions:-

 

1.     What data rates (bps) can be tolerated by the PLC modules?

2.     What is the maximum distance between modules?

3.     I imagine that circuit breakers transformers etc would attenuate the PLC signal and therefore we would most likely install the PLC modules between such devices is this correct?

4.     What do the units look like?

5.     We are looking at maybe 20 sets/pairs of PLC units. They would (mostly) be on individual domains with a single RS485 device connected at one end and the other connected to the data concentrator unit.

6.     How much is a single pair of units if we want to buy some for evaluation use?

 

Thanks and regards,


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