loaded a TeleLCO board

[web/altusmetrum] / TeleMetrum / index.mdwn

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+[[!meta title="TeleMetrum"]]

 # TeleMetrum
 
 This is a recording dual-deploy altimeter for high power model rocketry 
 # TeleMetrum
 
 This is a recording dual-deploy altimeter for high power model rocketry 

-with integrated telemetry link.
-
-<a href="v0.2 SMT side"> <img src="v0.2/cimg5164-cropped.jpg"></a>
-<a href="v0.2 connector side"> <img src="v0.2/cimg5171-cropped.jpg"></a>
-<a href="loadedpair.jpg"> <img src="loadedpair-thumb.jpg"></a>
-<a href="rawfront.jpg"> <img src="rawfront-thumb.jpg"></a>
-<a href="rawback.jpg"> <img src="rawback-thumb.jpg"></a>
-
-## Motivation ##
-
-Bdale and Keith both own 
-[BeeLine](http://www.bigredbee.com/BeeLine.htm)
-trackers from 
-[Big Red Bee](http://www.bigredbee.com), and are pretty happy with them.
-They use a PIC processor and a TI CC1050 transmitter chip, and
-operate in the ham radio 70cm band.
-
-One weekend while attending a conference together, we got to wondering if 
-we couldn't adapt one to use as a downlink for the
-[AltusMetrum](../AltusMetrum/) altimeter board in addition to direction
-finding after flight.  That caused us to start thinking about other things
-in the design we might want to tweak, and before long we were working on the
-design of a new tracker board derived from the BeeLine design.
-Another friend at the same conference showed us a board he was working on 
-using a different part in the same TI series, that integrated a transceiver
-and CPU on the same chip.
-It didn't take us long to realize that with such a part we could combine and
-simplify things by building a new altimeter with integrated RF link!  And
-after gaining some experience in 2009 with a first version, we realized we
-always want GPS on board, which lead to our current second generation boards.
+with integrated GPS and telemetry link.  
+
+For the latest TeleMetrum firmware and related ground station software, please
+visit the [AltOS](../AltOS) page on this site.
+
+These are photos of previous production version 3.0, we'll try to get around
+to taking some v4 photos eventually:
+
+<a href="v3.0/telemetrum-v3.0-th.jpg"> <img src="v3.0/telemetrum-v3.0-th-thumb.jpg"></a>
+<a href="v3.0/telemetrum-v3.0-smt.jpg"> <img src="v3.0/telemetrum-v3.0-smt-thumb.jpg"></a>
+
+v4.0 was introduced in 2023, and is now available for sale.

 
 ## Features ##
 
 
 ## Features ##
 


@@ -39,128 +22,96 @@ always want GPS on board, which lead to our current second generation boards.
 * Recording altimeter for model rocketry
 * Supports dual deployment (can fire 2 ejection charges)
 * 70cm ham-band transceiver for telemetry downlink
 * Recording altimeter for model rocketry
 * Supports dual deployment (can fire 2 ejection charges)
 * 70cm ham-band transceiver for telemetry downlink

-* Barometric pressure sensor good to 45k feet MSL
-* Temperature sensor
-* 1-axis high-g accelerometer for motor characterization
+* Barometric pressure sensor good to 100k feet MSL
+* 1-axis 200-g accelerometer for motor characterization
+* On-board, integrated GPS receiver

 * On-board non-volatile memory for flight data storage
 * On-board non-volatile memory for flight data storage

-* Serial port for attachment of GPS module

 * USB for power, configuration, and data recovery
 * Integrated support for LiPo rechargeable batteries
 * USB for power, configuration, and data recovery
 * Integrated support for LiPo rechargeable batteries

-* 2.5 x 1 inch board designed to fit inside 29mm airframe coupler tube
+* Uses LiPo to fire e-matches, can be made to support separate pyro battery
+* 2.75 x 1 inch board designed to fit inside 29mm airframe coupler tube

 
 ### Developer View ###
 
 
 ### Developer View ###
 

-* [TI CC1111F32](http://focus.ti.com/docs/prod/folders/print/cc1111f32.html) Low Power RF System-on-Chip
-       * Sub-1Ghz transceiver
-       * 8051 MCU
-       * 32k Flash
-       * 4k RAM
-       * USB 2.0
-       * 6 12-bit analog inputs (11 bits with single-ended sensors)
-       * 2 channels of serial I/O
-       * digital I/O
-* [Microchip 25LC1024](http://www.microchip.com/wwwproducts/Devices.aspx?dDocName=en520389) CMOS serial EEPROM
-       * 128k x 8
-       * SPI interface
-* Various Sensors
-       * [Freescale MP3H6115A](http://www.freescale.com/webapp/search.partparamdetail.framework?PART_NUMBER=MP3H6115A6U) pressure sensor
-       * [Freescale MMA2202EG](http://www.freescale.com/webapp/search.partparamdetail.framework?PART_NUMBER=MMA2202EG) 50g accelerometer.  Can use 40-200g variants!
-       * [Microchip MCP9700A](http://www.microchip.com/wwwproducts/Devices.aspx?dDocName=en027103) temperature sensor
-* Software Features (planned)
-       * Written mostly in C with some 8051 assembler
-       * Runs from on-chip flash, uses on-chip RAM, stores flight data to
-               serial EEPROM chip
+* Hardware Features of v3.0
+       * Atmel SAMD21G17D ARM Cortex M0+ based Microcontroller
+       * TI [CC1200](http://www.ti.com/product/cc1200) Low Power, High Performance RF Transceiver
+       * 150mA 3.3V LDO regulator
+       * [Winbond W25Q64CV](http://www.winbond.com/hq/enu/ProductAndSales/ProductLines/FlashMemory/SerialFlash/W25Q64CV.htm) serial flash memory
+       * [u-blox](http://www.u-blox.com/) MAX-8Q GPS receiver
+               * on-board passive patch antenna
+               * async serial interface
+       * Measurement Specialties [MS5607](http://www.meas-spec.com/product/t_product.aspx?id=8499) Micro Altimeter Module
+               * Wide range — 120kPa to 1kPa (approximately -1500m to 31000m)
+               * High precision — 2.4Pa resolution (approximately 20cm at sea level)
+               * Factory calibrated.
+       * Analog Devices [ADXL375](https://www.analog.com/en/products/adxl375.html) 3-Axis Digital MEMS Accelerometer
+               * +- 200g full-scale
+               * on-chip digitizer
+* Software Features
+       * Written mostly in C with some ARM assembler
+       * Runs from on-chip flash, uses on-chip RAM, stores flight data to serial flash

        * USB serial emulation for "console" interface
 * Tools Used
        * USB serial emulation for "console" interface
 * Tools Used

-       * [gEDA](http://www.gpleda.org/) for schematic capture and PCB layout
-       * [SDCC](http://sdcc.sourceforge.net/) compiler and source debugger
+       * [Lepton EDA](https://github.com/lepton-eda/lepton-eda) for schematic capture
+       * [pcb-rnd](http://repo.hu/projects/pcb-rnd/) for PCB layout

 * 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)
 
 * 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)
 

-## [Production History](production) ##
+TeleMetrum v4 early units shipped with uBlox MAX-M8C GPS modules, but we had
+a low yield on those boards for some reason.  Newer units have the MAX-M10S 
+GPS module.

 
 

-## [Flight Logs](flightlogs) ##
+## Videos ##

 
 

-## Problems ##
+There are a number of TeleMetrum customer and other 
+[videos on YouTube](http://www.youtube.com/results?search_query=telemetrum)

 
 

-* The CC1111F32 is a 36-pin QFN package, which necessitates reflow 
-  soldering.  Since we needed to reflow solder anyway, and because TI used 
-  them in their reference design, we went a little crazy and used 0402 
-  passive parts everywhere.  That means working under a microscope to 
-  place parts!  Without an inspection microscope, loading and testing these
-  boards might be impossible.
+## Artifacts ##

 
 

-* The v0.1 artwork has the USB connector footprint placed wrong, so that the
-  connector hangs out over the edge of the board instead of being flush with
-  the edge.
+There is a single manual for TeleMetrum and all other Altus Metrum products,
+which is available in [html](../AltOS/doc/altusmetrum.html) and 
+[pdf](../AltOS/doc/altusmetrum.pdf) formats.

 
 

-* The v0.1 artwork has two issues that require cuts and jumps.  The first is
-  that we need chip select on the SPI memory.  To fix that, we give up the 
-  ability to put the accelerometer into self-test mode and use that GPIO line
-  to pull chip select on the memory.  The second is that the igniter sense
-  circuits each need a second resistor to complete the voltage divider so our
-  3.3V CPU ADC can read the 5V ejection voltage.  This is fixed by changing
-  two resistor values, and tacking two additional resistors onto the board
-  with jumpers to ground.
+An outline of the board with drill hole locations is available in
+[pdf](../AltOS/doc/telemetrum-outline.pdf) format.

 
 

-## Artifacts ##
+This board was designed using lepton-eda and pcb-rnd.

 
 

-The hardware design current gEDA files are available from 
+The hardware design files are available from 

 [git.gag.com](http://git.gag.com) in the project 
 [hw/telemetrum](http://git.gag.com/?p=hw/telemetrum;a=summary).  
 
 Work on the next version proceeds on the master branch, with occasional
 temporary branches created when Bdale is making some major / speculative
 [git.gag.com](http://git.gag.com) in the project 
 [hw/telemetrum](http://git.gag.com/?p=hw/telemetrum;a=summary).  
 
 Work on the next version proceeds on the master branch, with occasional
 temporary branches created when Bdale is making some major / speculative

-change.  The 'v0.2' and 'v0.1' branches document what we're actually flying 
-right now on the two respective PCB revisions.  The 'ground' branch has a 
-cut-down schematic used to generate the BOM for partially loading v0.1 boards 
-to used on the ground.  We call the on-the-ground version 'TeleDongle'.
+change.  Branches/tags with names like 'v4.0' document what we're actually 
+flying on the respective PCB revisions.  

 
 For those who don't have ready access to the gEDA suite, here are pdf snapshots
 
 For those who don't have ready access to the gEDA suite, here are pdf snapshots

-of files in more easily readable form.  
-
-* These are from the v0.2 branch:
- * [schematic](v0.2/telemetrum.pdf)
- * [pcb artwork](v0.2/telemetrum.pcb.pdf)
- * [bill of materials](v0.2/partslist.csv)
-* These are as of the working-v0.1 tag:  
- * [schematic](v0.1/telemetrum.pdf)
- * [pcb artwork](v0.1/telemetrum.pcb.pdf)
- * [bill of materials](v0.1/telemetrum.bom)
-
-We have firmware that works well enough that we now routinely allow TeleMetrum 
-to control flights by firing ejection charges.  We've flown v0.1 boards in 
-rockets exceeding 50g acceleration, above Mach 1, and to altitudes greater 
-than 12k feet AGL with great results.  Keith wrote a ground station program 
-called 
-ao-view that logs telemetry to disk, displays current and max
-values for key parameters during flight, and even includes voice synthesis 
-during the flight so that our eyes can stay on the rockets!  We have post
-flight analysis software that makes it easy to extract data from the board,
-analyze it, and even generate KML files for viewing flights in GoogleEarth!
-More details on the software, including full source code and pre-built packages
-can be found on the [AltOS](../AltOS) page on this site.
-
-## Future Plans ##
-
-Work is underway on a second revision of TeleMetrum with the following changes:
-
-* stretch board length by 0.25 inches
-* adjust USB connector position to be flush with edge of board
-* eliminate temperature sensor, since baro sensor is already compensated and there's a sensor on the cc1111
-* eliminate serial port connector
-* integrate SkyTraq Venus GPS receiver and patch antenna on-board
-* change debug connector to 4 pin Tyco MicroMaTch
-* add 8 pin Tyco MicroMaTch connector for companion board interface
-* use v_lipo as pyro power, eliminating the huge 1000uF capacitor and instead
-  adding ballast capacitance on the 3.3V rail to prevent brownouts
-* move all connectors, beeper, and GPS patch antenna to the "other side" of the board from the surface mount parts
-* add a rectangle of silk screen material for improved serial number labeling
-
-As of early December 2009, the layout work for v0.2 is done and we're busy
-verifying it and deciding exactly how we're going to build them.  We hope to
-have first prototypes to test in time to show the new version at LCA in late
-January 2010.  If it works out as well as we hope, v0.2 may be made available 
-in assembled and tested form to others in the rocketry hobby who have 
-expressed interest sometime in 2010.
+of the files for Production PCB version 4.0 in more easily readable form.  
+
+* [schematic](v4.0/telemetrum-sch.pdf)
+* [pcb artwork](v4.0/telemetrum-pcb.pdf)
+* [bill of materials](v4.0/partslist.csv)
+
+Rockets we know of flying with TeleMetrum boards have exceeded 50g acceleration, 
+been well above Mach 1, and reached altitudes 
+greater than 25k feet AGL with great results.  Keith's second generation 
+ground station program called AltosUI works on Windows, Mac, and Linux systems
+and logs telemetry to disk, displays current and max values for key parameters 
+during flight, includes voice synthesis during the flight so that 
+our eyes can stay on the rockets, and even includes live display of rocket
+position over moving maps!  After flight, altosui can extract the 
+complete flight log from TeleMetrum, can display plots of the data from either
+the telemetry received by radio or the onboard flight log, can output a kml 
+file for use with [Google Earth](http://earth.google.com), and can also 
+output all the flight data as a csv file for easy import to spreadsheet 
+programs or other analysis tools allowing you to perform whatever
+custom analysis you can envision!  More details on the software, 
+including full source code and pre-built packages
+can be found on the [AltOS](../AltOS) page on this site.  Feel free to 
+download the software and try it before purchasing our hardware!
+
+## [History of TeleMetrum](history) ##
+