Differences

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--- projects:eurus [2012/05/29 15:26] – [Launch Day] jcoxon
+++ projects:eurus [2013/07/22 17:16] (current) – jcoxon
@@ Line 89: / Line 89: @@
 ===== Eurus 2 =====
+==== Aim ====
+Similar flight to Eurus 1 however to attempt to float at a lower altitude (25km) in an attempt to take advantage of the faster winds.
+==== Components ====
+  * Howyee 1600g balloon (aim for 2.5m/s ascent)
+  * Neck valve + controller micro
+  * Parachute
+  * 434Mhz Tracker (similar to Eurus 1)
+    * Based on uAva (Atmega328, Ublox 6, RFM22b)
+    * Running plan13 for predicting ISS paths
+    * Improved antenna
+==== Eurus 2 Payload ====
+  * Based on a uAva board
+    * ATmega328 with arduino bootloader
+    * RFM22b
+    * Ublox MAX-6 GPS with chip antennna
+    * Running at 8Mhz 3.3v
+  * 1/4 Wave GP (4 radials) Antenna
+  * Mass = 211g
+=== Telemetry ===
+<code>$$EURUS,61,09:51:32,512720368,10907357,36,6,3,6,565,-45,154,0,0*F16A</code>
+<code>$$EURUS,Count,HH:MM:SS,Latitude,Longitude,Altitude,Sats,Lock,NavMode,Battery Voltage,ISS Az,ISS El,APRS Status,APRS_Attempts*CRC16</code>
+Code can be found here: [[https://github.com/jamescoxon/Eurus/blob/master/2mTracker/Combo/Combo.ino|Github Combo.ino]]
+The payload is setup to calculate the Az and El of the ISS in relation to the balloon and if it is in view it will send APRS messages. The payload however will not be carrying a capable radio to communicate with the ISS, partially as this is a high risk launch testing the new valve but also the ISS has changed its packet system from 2m to 70cm which makes it harder to get a relay. We'll still test the flight code as it may come in useful in the future.
+Also the radio will be reset every 50 strings as well as the GPS being 're-setup' to avoid any problems with the individual components reseting and losing their configs.
+==== Eurus 3 ====
+  * [[eurus:uv-3r|Deconstruction of UV-3r]]
+  * [[eurus:uv-5r|UV-5r]]