Talk:Projects

Requests

I would like that the Bicicle LED POV project is added under POV projects. Here is the link: http://code.google.com/p/bicycleledpov/

Thank you.

Done. --DavidCary 08:26, 10 July 2008 (PDT)

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I'm a hobby robotics programmer and can't design a circuit to save my life. I would love to see a braking H-Bridge that won't fry my bot. --RProgrammer

Check Out Open Source Motor Controller

Greetings, fellow roboteer.

Have you tried: [1]

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What is this "Open Soekris" embedded system on SourceForge ? --75.37.225.73 07:27, 9 May 2007 (PDT)

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There seems to be a lot of overlap between this projects page and the open source electronics page. What is the right thing to do? --DavidCary 09:19, 7 June 2007 (PDT)

Options:

• move the list of all the specific projects to the projects page. Keep open source electronics as a general definition, with a link to the projects page.
• ... Can you think of a better way to handle this?

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ADSL Wireless/Ethernet modem

Hello,

Does anybody have a schematic for ADSL modem - either for wired Ethernet or wireless? A design based on a Linux supporting CPU would be highly useful. Searching on the net doesn't yield any easy results.

02 Dec 2008

I did a bit of googling -- '"adsl modem" reference design' seems like a good search string.

I see that at least one commercially-available ADSL modem already runs Linux.

--DavidCary 05:56, 20 December 2008 (PST)

ADSL hardware:

• ADSL Modem/Router block diagram
• Wikipedia: ADSL has detailed frequency information
• "Taking the Noise Out of ADSL Modem Designs" includes "Figure 1: Functional Diagram of an ADSL CPE modem board."
• Cypress: ADSL Modem Reference Design
• Unicorn: "The Unicorn II chipset consists of the ST70138 Controllerless Transceiver, with integrated DMT (Discrete Multi-Tone) engine, ...; and the MTC20174 ADSL Analog Front End (AFE) chip... The chipset is now available" -- STMicroelectronics UNICORN II
  • USB ADSL modem chipset: ST70138 + MTC20174 data brief
  • Unicorn II flyer
• DSL (Digital Subscriber Line) ChipWeb is a directory of DSL Modems and Chips, including
  • Alcatel Microelectronics: MTK-20152 USB ADSL Modem; ADSL DynaMiTe(TM) chipset ...
• Centillium Communications: "Palladia 220 ADSL Home Gateway Reference Design Kit"
• "Timed executable system specification of an ADSL modem using a C++ based design environment: a case study" by Dirk Desmet, et. al. 1999
• Broadcom: "Single-Chip ADSL2+ CPE Chip"; "Powering Next Generation Customer Premises Equipment (CPE), Broadcom's New Router Chip Provides Industry-Leading Asymmetric Digital Subscriber Line (ADSL)2+ and Home Networking Performance"
  • Broadcom "xDSL CO Solutions ... Reference Design" ... hardware at the "telephone company" ("CO") end of the wire
  • Broadcom "ADSL Modems ... xDSL CPE Solutions" ... hardware at the customer premise equipment (CPE) end of the wire.
• STMicroelectronics: ADSL/ADSL2+ products
• Conexant Systems: ADSL Solutions
• Xilinx: "Implementing an ADSL to USB Interface Using Spartan Devices"
• Alcatel-Lucent has some general information, but seems to focus more on the hardware at the "telephone company" end of the wire

ADSL firmware:

• attempts to modify the firmware on ... Belkin F5D7633 ADSL Modem Router ... These routers ... use Linux...
• OpenWRT: "ADSL routers which work with OpenWRT"
• OpenWRT: "Status of the AR7 port of OpenWrt" (AR7 is ... used for routers and ADSL gateways)
• OpenWRT: "Porting OpenWrt to the DSL-502T"
• "Getting OpenWRT going on the D-Link DSL-502T" by Chris Pascoe ... The D-Link DSL-502T is a single-port ADSL2/2+ modem/router
• "OpenWRT on the D-Link DSL-502T"

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Hi,

Thanks a lot David. I may be a bit too demanding, but I was looking out for a nearly 'readymade' schematic, which I could implement. I am not too good at analog electronics, but can understand and design digital interfaces. Hence a schematic for the ADSL decoder section and its interface to a micro-controller will help me.

Thanks again !

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