View source for Talk:Wishlist/Sensorbox

= Processor discussion =
== A ==
** Please use the ARM processor (32bit address space) - it has no [http://en.wikipedia.org/wiki/Bank_switching Bank switching]; ARM has a big linear directly addressable memory. Can get flashed by this open source tool: [http://tech.groups.yahoo.com/group/lpc21isp/ lpc21isp], [http://groups.yahoo.com/group/lpc21isp/files/ yahoo download (after user registration)].
*** Look e.g. on the cheap LPC214x (LPC2144-LPC2148 has 14 ADC multiplexed channels - two internal ADCs). Chip price: [http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail?name=568-1763-ND digikey.com: LPC2144 US$ 8.4], [http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail?name=568-1765-ND LPC2148 US$ 11.2]. The [http://en.wikipedia.org/wiki/ARM_architecture ARM architecture] is "old" (from 1983), wildly known, used, efficient(high mips/watt) and uses low power (different kind of deep sleep).
***Test/development/production boards:
****USB powered through USB-flash port, only mentions 2 ADC-ports: [http://www.embeddedartists.com/products/education/edu_2148.php embeddedartists.com: LPC2148 Education Board] (two USB ports - one for programming via a ftdi-chip(USB<->serial) - and one directly connected to LPC2148)
****[http://www.mikrocontroller.net/articles/ARM_MP3/AAC_Player ARM MP3/AAC Player] Quote: "...This is my MP3/AAC player project. The difference to most other players is that decoding is not done on a specialized IC (like VS1001), but directly on the microcontroller. It can play MP3 (all bit rates) and AAC (up to ~256 kbps) from SD card in real time. The project is work in progress..."
****[http://microcontrollershop.com/product_info.php?cPath=315&products_id=2252  LPC2148-based Line-tracing Race Car Robot Kit]
****[http://www.scienceprog.com/arm7-lpc2148-mini-board/ ARM7 LPC2148 mini board], [http://www.scienceprog.com/arm7-base-development-board-for-lpc2148/ ARM7-Base development board for LPC2148]
****ARM1136JF-S-based: [http://www.buglabs.net/ buglabs.net], [http://www.buglabs.net/applications Some applications], [http://bugcommunity.com/wiki/index.php/BUG_Wiki bugcommunity wiki]
****[http://www.gumstix.com/products.html Gumstix]
****AT91SAM7S256 (ARM) based: [http://en.wikipedia.org/wiki/Lego_Mindstorms_NXT Lego Mindstorms NXT], [http://www.teamhassenplug.org/NXT/NXTSoftware.html NXT Programming Software]
****[http://www.visionsystems.de/produkte/6801.html Alekto; DIN RAIL mountable]
****Atmel AT91SAM7X256 based (also ARM): [http://www.makingthings.com/documentation/tutorial/controller-board-overview  Controller Board Overview], [http://www.makingthings.com/ makingthings.com], [http://sourceforge.net/projects/makingthings/ sourceforge.net: makingthings]
***Open source support:
****[http://sourceforge.net/projects/lpcusb LPC214x USB stack]
***Links:
****[http://www.nxp.com/pip/LPC2141_42_44_46_48_3.html NXP: LPC2141/42/44/46/48 - Single-chip 16-bit/32-bit microcontrollers]
****[http://rod.info/ARM7Micro ARM7 NXP (formerly a division of Philips) LPC Microcontroller]
****[http://www.embedded.com/design/opensource/200000632?_requestid=1792 Building Bare-Metal ARM Systems with GNU: Part 1 - Getting Started]
****[http://www.siwawi.arubi.uni-kl.de/avr_projects/arm_projects/index.html ARM-Projects]
****[http://www.computer-solutions.co.uk/info/Embedded_tutorials/usb_tutorial.htm Embedded USB - a brief tutorial]
****[http://bas.woodpecker.gotdns.org/ALDS.php ALDS]
== Users:hns ==
This is what has been thought of: a simple processor that still suppports A/D converters and USB.
A good candidate appears to be http://ww1.microchip.com/downloads/en/DeviceDoc/41124c.pdf

Using an ARM processor just to convert some samples per second into USB appears to be overkill to me.