Wishlist/Sensorbox
From Openmoko
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* a PIC with USB and 8 x ADC (which one, link??) | * a PIC with USB and 8 x ADC (which one, link??) | ||
** 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)]. | ** 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 US$ 11.2] | + | *** 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] |
***Test/development/production boards: | ***Test/development/production boards: | ||
****USB powered through USB-flash port: [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) | ****USB powered through USB-flash port: [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) | ||
Revision as of 11:05, 2 November 2008
During out SYSTEMS fair presentation, an idea was born: an external sensor box!
There is an initial discussion (in German):
http://freeyourphone.de/portal_v1/viewtopic.php?f=3&t=661&p=6966#p6966
Contents |
Features
- analog sensors
- connected as USB (host)
- battery extender (?)
Sensors
- Temperature
- Humidity
- Barometer
- magnetic compass
- Light intensity / Color
- Laser / Ultrasonic distance
- Voltmeter (?)
Other proposed extensions
These ideas go beyond the original Sensorbox idea but some of them can be easily added:
- LED lamp
- GPS Antenna
- Battery pack
- Camera
- USB Hub
- RJ45
Mechanics
There is currently some discussion if it should be a Jacket or an external box. http://freeyourphone.de/portal_v1/download/file.php?id=51
Electronics
- a PIC with USB and 8 x ADC (which one, link??)
- Please use the ARM processor (32bit address space) - it has no Bank switching; ARM has a big linear directly addressable memory. Can get flashed by this open source tool: lpc21isp, yahoo download (after user registration).
- Look e.g. on the cheap LPC214x (LPC2144-LPC2148 has 14 ADC multiplexed channels - two internal ADCs). Chip price: digikey.com: LPC2144 US$ 8.4, LPC2148 US$ 11.2
- Test/development/production boards:
- USB powered through USB-flash port: embeddedartists.com: LPC2148 Education Board (two USB ports - one for programming via a ftdi-chip(USB<->serial) - and one directly connected to LPC2148)
- 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..."
- LPC2148-based Line-tracing Race Car Robot Kit
- ARM7 LPC2148 mini board, ARM7-Base development board for LPC2148
- ARM1136JF-S-based: buglabs.net, Some applications, bugcommunity wiki
- Alekto; DIN RAIL mountable
- Atmel AT91SAM7X256 based (also ARM): Controller Board Overview, makingthings.com, sourceforge.net: makingthings
- Open source support:
- Links:
- Please use the ARM processor (32bit address space) - it has no Bank switching; ARM has a big linear directly addressable memory. Can get flashed by this open source tool: lpc21isp, yahoo download (after user registration).
- power comes through USB
- USB A/f so that the standard client cable can be connected
Software
- Device is addressed as a simple serial interface over USB
- allows to switch on/off each sensor (so that power drainage can be controlled)
- sends every 0.1 seconds a data block with latest data values
- User-Interface runs on the Freerunner
