From: Bdale Garbee Date: Tue, 30 Nov 2010 21:20:16 +0000 (-0700) Subject: clean up confusion between AltusMetrum and OpenAlt naming for original X-Git-Url: https://git.gag.com/?p=web%2Faltusmetrum;a=commitdiff_plain;h=b27f14e85f7b429006773154f85011b445bcd2e4 clean up confusion between AltusMetrum and OpenAlt naming for original design based on LPC2148, add a reference to being US based with a flag image from openclipart.org --- diff --git a/AltusMetrum.mdwn b/AltusMetrum.mdwn deleted file mode 100644 index 028e662..0000000 --- a/AltusMetrum.mdwn +++ /dev/null @@ -1 +0,0 @@ -[[!map pages="AltusMetrum/* and ! AltusMetrum/*/*"]] diff --git a/AltusMetrum/AltusMetrum.odp b/AltusMetrum/AltusMetrum.odp deleted file mode 100644 index 3d7d457..0000000 Binary files a/AltusMetrum/AltusMetrum.odp and /dev/null differ diff --git a/AltusMetrum/hpim2581-thumb.jpg b/AltusMetrum/hpim2581-thumb.jpg deleted file mode 100644 index 1e6f31c..0000000 Binary files a/AltusMetrum/hpim2581-thumb.jpg and /dev/null differ diff --git a/AltusMetrum/hpim2581.jpg b/AltusMetrum/hpim2581.jpg deleted file mode 100755 index c67733d..0000000 Binary files a/AltusMetrum/hpim2581.jpg and /dev/null differ diff --git a/AltusMetrum/hpim2582-thumb.jpg b/AltusMetrum/hpim2582-thumb.jpg deleted file mode 100644 index a43b36c..0000000 Binary files a/AltusMetrum/hpim2582-thumb.jpg and /dev/null differ diff --git a/AltusMetrum/hpim2582.jpg b/AltusMetrum/hpim2582.jpg deleted file mode 100755 index 7b584a5..0000000 Binary files a/AltusMetrum/hpim2582.jpg and /dev/null differ diff --git a/AltusMetrum/index.mdwn b/AltusMetrum/index.mdwn deleted file mode 100644 index cc70e75..0000000 --- a/AltusMetrum/index.mdwn +++ /dev/null @@ -1,105 +0,0 @@ -# AltusMetrum - -This is the design that started it all! Bdale got frustrated with existing -commercial altimeters and decided to build his own. This project was -presented in talks at LCA, SCALE, OLS, and Debconf in 2008. - -Here are photos of the front and back sides of the version 0.1 prototype PCB, -which was 100% auto-routed on 2 layers using the -[gEDA](http://www.gpleda.org) -schematic and pcb tools. - - - - -## Features ## - -### User View ### - -* Recording altimeter for model rocketry -* Supports dual deployment (can fire 2 ejection charges) -* Primary operations based on pressure sensor -* 3-axis accelerometer -* Temperature sensor -* 2 serial ports for attachment of GPS and RF link modules -* USB for data recovery and post-flight power source -* Flexible battery choices -* Designed to fit 24mm airframe tube - -### Developer View ### - -* NXP LPC-2148 Processor (ARM7TDMI-S) - * 512k Flash memory, 32k RAM - * USB plus lots of analog, digital, and serial I/O -* Microchip 24FC1025 CMOS serial EEPROM - * 128k x 8 - * I2C interface -* Various Sensors - * Freescale MP3H6115A pressure sensor - * Freescale MMA7260QT 3-axis accelerometer - * Microchip MCP9700A temperature sensor - * (Honeywell 2-axis magnetic sensor left out of v0.1) -* Software Features - * Written mostly in C with some ARM assembler - * Runs from on-chip flash, uses on-chip RAM, stores flight data to - serial EEPROM chip - * USB serial emulation for "console" interface - * Uses GCC, newlib, FreeRTOS, LPCUSB - * Based on a demo package written for the Olimex LPC-P2148 eval board - by J C Wren -* Licenses - * The hardware is licensed under the [TAPR](http://www.tapr.org) [Open Hardware License](http://www.tapr.org/ohl.html) - * The software is licensed [GPL version 2](http://www.gnu.org/licenses/old-licenses/gpl-2.0.html) - -## Problems ## - -In addition to the various "oopses" that were found and fixed during initial -turn-on of this board, several issues contributed to the decision to shelve -the design for now: - -* lots of work went in to trying to make the board fit in a 24mm airframe, - but the resulting design with battery is really too heavy for such a small - rocket. - -* the 3-axis accelerometer has a max scale of +/- 6g. This is insufficient - for characterizing the kinds of motors that we're playing with now. - -* while using a gcc-based toolchain to cross-develop for the ARM7 core works - reasonably well, it's a heavy toolchain to build and maintain, and the - processor really is serious overkill for the task at hand. - -## Artifacts ## - -The best version of Bdale's [Peace Love and Rockets](AltusMetrum.odp) -presentation about this hardware generation was given at the Ohio LinuxFest -2008. Note that there are many photos included, so this is a HUGE file! - -The version 0.1 design had enough issues that Bdale decided not to publish -it. Work on an 0.2 revision is mostly complete at the schematic level, and -some printed circuit board artwork updates were made, but a second run of -boards was never attempted. This design is now mostly of historical interest. - -## Futures ## - -If we decide to do further work on this design, a number of changes seem -potentially appropriate for the next board revision, in addition to just -fixing bugs found in the turn-on of the initial boards. - -* The LiPo battery support from [TeleMetrum](../TeleMetrum) should be copied - into this design, replacing the battery screw terminals with a standard LiPo - 2-pin battery connector. - -* The [SparkFun](http://www.sparkfun.com) folks have produced - a [USB bootloader for the LPC2148](http://www.sparkfun.com/commerce/tutorial_info.php?tutorials_id=94). It - requires an SD card for temporary storage of code to be - flashed. Replacing the current external SPI memory chip with a microSD - socket could make sense. The socket size is under a cm square, and ones - that have a fold-up locking top are about $2, vs over $6 for the current - memory chip. The cards themselves are getting very cheap, too, and can - store much more data than the current 128k memory chip. This would require - moving ADC_Vbat to a different ADC input so that pins 27, 29, 30, and 31 - would be available for the microSD socket. - -* Consideration should be given to changing the accelerometer for a higher-G - single axis unit as in [TeleMetrum](../TeleMetrum) if we want to be able to - use it for motor characterization. diff --git a/OpenAlt.mdwn b/OpenAlt.mdwn new file mode 100644 index 0000000..028e662 --- /dev/null +++ b/OpenAlt.mdwn @@ -0,0 +1 @@ +[[!map pages="AltusMetrum/* and ! AltusMetrum/*/*"]] diff --git a/OpenAlt/AltusMetrum.odp b/OpenAlt/AltusMetrum.odp new file mode 100644 index 0000000..3d7d457 Binary files /dev/null and b/OpenAlt/AltusMetrum.odp differ diff --git a/OpenAlt/hpim2581-thumb.jpg b/OpenAlt/hpim2581-thumb.jpg new file mode 100644 index 0000000..1e6f31c Binary files /dev/null and b/OpenAlt/hpim2581-thumb.jpg differ diff --git a/OpenAlt/hpim2581.jpg b/OpenAlt/hpim2581.jpg new file mode 100755 index 0000000..c67733d Binary files /dev/null and b/OpenAlt/hpim2581.jpg differ diff --git a/OpenAlt/hpim2582-thumb.jpg b/OpenAlt/hpim2582-thumb.jpg new file mode 100644 index 0000000..a43b36c Binary files /dev/null and b/OpenAlt/hpim2582-thumb.jpg differ diff --git a/OpenAlt/hpim2582.jpg b/OpenAlt/hpim2582.jpg new file mode 100755 index 0000000..7b584a5 Binary files /dev/null and b/OpenAlt/hpim2582.jpg differ diff --git a/OpenAlt/index.mdwn b/OpenAlt/index.mdwn new file mode 100644 index 0000000..cc70e75 --- /dev/null +++ b/OpenAlt/index.mdwn @@ -0,0 +1,105 @@ +# AltusMetrum + +This is the design that started it all! Bdale got frustrated with existing +commercial altimeters and decided to build his own. This project was +presented in talks at LCA, SCALE, OLS, and Debconf in 2008. + +Here are photos of the front and back sides of the version 0.1 prototype PCB, +which was 100% auto-routed on 2 layers using the +[gEDA](http://www.gpleda.org) +schematic and pcb tools. + + + + +## Features ## + +### User View ### + +* Recording altimeter for model rocketry +* Supports dual deployment (can fire 2 ejection charges) +* Primary operations based on pressure sensor +* 3-axis accelerometer +* Temperature sensor +* 2 serial ports for attachment of GPS and RF link modules +* USB for data recovery and post-flight power source +* Flexible battery choices +* Designed to fit 24mm airframe tube + +### Developer View ### + +* NXP LPC-2148 Processor (ARM7TDMI-S) + * 512k Flash memory, 32k RAM + * USB plus lots of analog, digital, and serial I/O +* Microchip 24FC1025 CMOS serial EEPROM + * 128k x 8 + * I2C interface +* Various Sensors + * Freescale MP3H6115A pressure sensor + * Freescale MMA7260QT 3-axis accelerometer + * Microchip MCP9700A temperature sensor + * (Honeywell 2-axis magnetic sensor left out of v0.1) +* Software Features + * Written mostly in C with some ARM assembler + * Runs from on-chip flash, uses on-chip RAM, stores flight data to + serial EEPROM chip + * USB serial emulation for "console" interface + * Uses GCC, newlib, FreeRTOS, LPCUSB + * Based on a demo package written for the Olimex LPC-P2148 eval board + by J C Wren +* Licenses + * The hardware is licensed under the [TAPR](http://www.tapr.org) [Open Hardware License](http://www.tapr.org/ohl.html) + * The software is licensed [GPL version 2](http://www.gnu.org/licenses/old-licenses/gpl-2.0.html) + +## Problems ## + +In addition to the various "oopses" that were found and fixed during initial +turn-on of this board, several issues contributed to the decision to shelve +the design for now: + +* lots of work went in to trying to make the board fit in a 24mm airframe, + but the resulting design with battery is really too heavy for such a small + rocket. + +* the 3-axis accelerometer has a max scale of +/- 6g. This is insufficient + for characterizing the kinds of motors that we're playing with now. + +* while using a gcc-based toolchain to cross-develop for the ARM7 core works + reasonably well, it's a heavy toolchain to build and maintain, and the + processor really is serious overkill for the task at hand. + +## Artifacts ## + +The best version of Bdale's [Peace Love and Rockets](AltusMetrum.odp) +presentation about this hardware generation was given at the Ohio LinuxFest +2008. Note that there are many photos included, so this is a HUGE file! + +The version 0.1 design had enough issues that Bdale decided not to publish +it. Work on an 0.2 revision is mostly complete at the schematic level, and +some printed circuit board artwork updates were made, but a second run of +boards was never attempted. This design is now mostly of historical interest. + +## Futures ## + +If we decide to do further work on this design, a number of changes seem +potentially appropriate for the next board revision, in addition to just +fixing bugs found in the turn-on of the initial boards. + +* The LiPo battery support from [TeleMetrum](../TeleMetrum) should be copied + into this design, replacing the battery screw terminals with a standard LiPo + 2-pin battery connector. + +* The [SparkFun](http://www.sparkfun.com) folks have produced + a [USB bootloader for the LPC2148](http://www.sparkfun.com/commerce/tutorial_info.php?tutorials_id=94). It + requires an SD card for temporary storage of code to be + flashed. Replacing the current external SPI memory chip with a microSD + socket could make sense. The socket size is under a cm square, and ones + that have a fold-up locking top are about $2, vs over $6 for the current + memory chip. The cards themselves are getting very cheap, too, and can + store much more data than the current 128k memory chip. This would require + moving ADC_Vbat to a different ADC input so that pins 27, 29, 30, and 31 + would be available for the microSD socket. + +* Consideration should be given to changing the accelerometer for a higher-G + single axis unit as in [TeleMetrum](../TeleMetrum) if we want to be able to + use it for motor characterization. diff --git a/index.mdwn b/index.mdwn index c36f5d2..2f44e54 100644 --- a/index.mdwn +++ b/index.mdwn @@ -40,7 +40,7 @@ To find more information about the rockets Bdale and his son have built, see

As Bdale and Robert became more experienced in the hobby and started to build and fly more sophisticated projects, we started to feel limited by the -existing electronics products available. AltusMetrum was Bdale's first +existing electronics products available. OpenAlt was Bdale's first attempt to address this situation with a completely open hardware and software design... other project have since followed, and it's cool to have help from various friends! @@ -66,7 +66,7 @@ the set of hardware projects here. * [TeleTerra](TeleTerra) is a planned hand-held ground station for use with [TeleMetrum](TeleMetrum/). -* [AltusMetrum](AltusMetrum/) +* [OpenAlt](OpenAlt/) was Bdale's original project here, a dual-deploy rocketry altimeter. One prototype was built, but never flown. This project is now indefinitely on hold. @@ -99,6 +99,12 @@ to decide which is better, comments welcome!) and buy a t-shirt or sticker! --- +![United States flag](jp_draws_US_Flag.png) +Altus Metrum products are proudly designed and manufactured in the United +States of America. + +--- + This site is powered by [ikiwiki](http://ikiwiki.info), and hosted by [Garbee and Garbee](http://www.gag.com) using [Debian GNU/Linux](http://www.debian.org) diff --git a/jp_draws_US_Flag.png b/jp_draws_US_Flag.png new file mode 100644 index 0000000..079887b Binary files /dev/null and b/jp_draws_US_Flag.png differ diff --git a/jp_draws_US_Flag.svg b/jp_draws_US_Flag.svg new file mode 100644 index 0000000..4ccaa37 --- /dev/null +++ b/jp_draws_US_Flag.svg @@ -0,0 +1,983 @@ + + + + + + + + + image/svg+xml + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +