X-Git-Url: https://git.gag.com/?a=blobdiff_plain;f=TeleMetrum%2Findex.mdwn;h=5269d0b73c3c4e427f23a9006f25bc09a6aada8d;hb=e20aa7c02b8933bf9fff42de47ec08642e8d2729;hp=bac3334326c531fb22d6ac67a39686567105dcd5;hpb=a5edb64c39ee39903fa8277b824cdf1a8ddd5a6d;p=web%2Faltusmetrum
diff --git a/TeleMetrum/index.mdwn b/TeleMetrum/index.mdwn
index bac3334..5269d0b 100644
--- a/TeleMetrum/index.mdwn
+++ b/TeleMetrum/index.mdwn
@@ -12,7 +12,8 @@ and [Australian Rocketry](http://www.ausrocketry.com/shop/index.php?main_page=pr
For the latest TeleMetrum firmware and related ground station software, please
visit the [AltOS](../AltOS) page on this site.
-These are photos of our current production version:
+These are photos of the previous production version (we haven't taken good
+pictures of v1.2 yet):
@@ -25,7 +26,7 @@ These are photos of our current production version:
* Supports dual deployment (can fire 2 ejection charges)
* 70cm ham-band transceiver for telemetry downlink
* Barometric pressure sensor good to 45k feet MSL
-* 1-axis high-g accelerometer for motor characterization
+* 1-axis 70-g accelerometer for motor characterization
* On-board, integrated GPS receiver
* On-board non-volatile memory for flight data storage
* USB for power, configuration, and data recovery
@@ -54,7 +55,7 @@ These are photos of our current production version:
* U.FL connector with 3.3V DC can be re-purposed for optional external amplified antennas
* async serial interface
* [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!
+ * [Analog Devices ADXL78](http://www.analog.com/en/mems-sensors/inertial-sensors/adxl78/products/product.html) 70g accelerometer.
* Software Features
* Written mostly in C with some 8051 assembler
* Runs from on-chip flash, uses on-chip RAM, stores flight data to
@@ -90,11 +91,11 @@ ground. We call the on-the-ground version '[TeleDongle](../TeleDongle)', and
newer versions have their own PCB design.
For those who don't have ready access to the gEDA suite, here are pdf snapshots
-of the files for Production PCB version 1.1 in more easily readable form.
+of the files for Production PCB version 1.2 in more easily readable form.
-* [schematic](v1.1/telemetrum.pdf)
-* [pcb artwork](v1.1/telemetrum.pcb.pdf)
-* [bill of materials](v1.1/partslist.csv)
+* [schematic](v1.2/telemetrum.pdf)
+* [pcb artwork](v1.2/telemetrum.pcb.pdf)
+* [bill of materials](v1.2/partslist.csv)
Rockets we know of flying with TeleMetrum boards have exceeded 50g acceleration,
been well above Mach 1, and reached altitudes
@@ -116,28 +117,8 @@ download the software and try it before purchasing our hardware!
## Future Plans ##
-TeleMetrum v1.2 is back from our assembler and the first batch are being
-prepared for sale, hopefully by Christmas day. The significant user-visible
-change is that we've moved to a 70g accelerometer by default, due to poor
-availability of the part we previously used due to damage to the Freescale
-facility in Sendai caused by the Japan earthquake / tsunami. Full details
-will be posted here when they're available to order.
-
-## Problems ##
-
-* 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.
-
-* The addition of on-board GPS in v0.2 and later boards means that the total
- power consumption
- can exceed the rate at which we draw power from the USB interface,
- particularly when the GPS is in cold start mode. This means a battery must
- be attached during operation, and also that the battery will only charge
- effectively from USB when the board is turned off.
+TeleMetrum v1.2 is now available for sale. Eventually we'll run out of v1.2
+boards, and by then no dobut we'll have found more things to tweak...
## [History of TeleMetrum](history) ##
@@ -25,7 +26,7 @@ These are photos of our current production version:
* Supports dual deployment (can fire 2 ejection charges)
* 70cm ham-band transceiver for telemetry downlink
* Barometric pressure sensor good to 45k feet MSL
-* 1-axis high-g accelerometer for motor characterization
+* 1-axis 70-g accelerometer for motor characterization
* On-board, integrated GPS receiver
* On-board non-volatile memory for flight data storage
* USB for power, configuration, and data recovery
@@ -54,7 +55,7 @@ These are photos of our current production version:
* U.FL connector with 3.3V DC can be re-purposed for optional external amplified antennas
* async serial interface
* [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!
+ * [Analog Devices ADXL78](http://www.analog.com/en/mems-sensors/inertial-sensors/adxl78/products/product.html) 70g accelerometer.
* Software Features
* Written mostly in C with some 8051 assembler
* Runs from on-chip flash, uses on-chip RAM, stores flight data to
@@ -90,11 +91,11 @@ ground. We call the on-the-ground version '[TeleDongle](../TeleDongle)', and
newer versions have their own PCB design.
For those who don't have ready access to the gEDA suite, here are pdf snapshots
-of the files for Production PCB version 1.1 in more easily readable form.
+of the files for Production PCB version 1.2 in more easily readable form.
-* [schematic](v1.1/telemetrum.pdf)
-* [pcb artwork](v1.1/telemetrum.pcb.pdf)
-* [bill of materials](v1.1/partslist.csv)
+* [schematic](v1.2/telemetrum.pdf)
+* [pcb artwork](v1.2/telemetrum.pcb.pdf)
+* [bill of materials](v1.2/partslist.csv)
Rockets we know of flying with TeleMetrum boards have exceeded 50g acceleration,
been well above Mach 1, and reached altitudes
@@ -116,28 +117,8 @@ download the software and try it before purchasing our hardware!
## Future Plans ##
-TeleMetrum v1.2 is back from our assembler and the first batch are being
-prepared for sale, hopefully by Christmas day. The significant user-visible
-change is that we've moved to a 70g accelerometer by default, due to poor
-availability of the part we previously used due to damage to the Freescale
-facility in Sendai caused by the Japan earthquake / tsunami. Full details
-will be posted here when they're available to order.
-
-## Problems ##
-
-* 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.
-
-* The addition of on-board GPS in v0.2 and later boards means that the total
- power consumption
- can exceed the rate at which we draw power from the USB interface,
- particularly when the GPS is in cold start mode. This means a battery must
- be attached during operation, and also that the battery will only charge
- effectively from USB when the board is turned off.
+TeleMetrum v1.2 is now available for sale. Eventually we'll run out of v1.2
+boards, and by then no dobut we'll have found more things to tweak...
## [History of TeleMetrum](history) ##