add quanum trifecta page

input/projects/quadcopters/trifecta.md

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+title: Tricopter
+description: 3S LiPo, Quanum Trifecta frame, 2204 2300KV motors
+parent: quadcopters
+position: 60
+date: 2016-05-25
+---
+
+<!--% backToParent() %-->
+
+As a second attempt for a self-built copter I decided to try and build a Tricopter.
+These only have three motors, with the third degree of freedom (yaw) being provided by tilting the back rotor using a servo.
+
+<!--%
+lightgallery([
+    [ "img/trifecta_photo_1.jpg", "Top view" ],
+    [ "img/trifecta_photo_2.jpg", "Front view" ],
+    [ "img/trifecta_photo_4.jpg", "Top back right view" ],
+    [ "img/trifecta_photo_3.jpg", "Top back left view" ],
+    [ "img/trifecta_photo_5.jpg", "Yaw mechanism tilted" ],
+    [ "img/trifecta_photo_8.jpg", "Folded up, side view" ]
+])
+%-->
+
+Here are some recordings of the FPV footage.
+Be aware that these videos are recorded from the received signal on the ground.
+Not only can you see lots of interference and other HF problems, the loss of quality from the video recorder and the YouTube encoding is also very noticeable.
+In real-life, the picture doesn't look *that* bad.
+
+<!--%
+lightgallery([
+    [ "https://www.youtube.com/watch?v=OyqBxzw04xs", "img/xytrifecta_crash_yaw_thumb.jpg", "Quanum Trifecta Crash Yaw Mechanism"],
+    [ "https://www.youtube.com/watch?v=e11Yb5sWEGo", "img/xytrifecta_crash_thumb.jpg", "Quanum Trifecta mysterious crash" ]
+])
+%-->
+
+I quite like the Trifecta frame.
+It can be folded down considerably for easier transportation and storage, while still being surprisingly sturdy.
+
+You need to use a relatively small battery, otherwise the copter is too high up, the back foot not reaching the ground, balancing on the battery.
+I printed a longer foot because of that.
+
+I had some problems with the first servo I tried, but after switching to the metal gear servo listed below, the yaw mechanism has worked perfectly.
+
+## Parts List
+
+The prices listed below are just what I found while doing this page some years later, not the real prices I paid back then.
+
+<!--%
+tableHelper([ "align-right", "align-last-right", "align-right"],
+    [ "Part", "Description", "Cost" ], [
+        [ "Frame", ("Quanum Trifecta Mini Foldable Tricopter Frame", "https://hobbyking.com/en_us/quanum-trifecta-mini-foldable-tricopter-frame-kit.html"), "27.67€" ],
+        [ "Servo", ("Emax ES09MD Digital Metallgetriebe Mini Servo", "https://www.premium-modellbau.de/emax-es09md-digital-metallgetriebe-mini-servo-15g-0-08s-2-6kg-kugellager-es08md"), "12.90€" ],
+        [ "FC", ("AfroFlight Naze32 Rev6 Flight Controller (Acro)", "https://hobbyking.com/en_us/afroflight-naze32-rev6-flight-controller-acro.html"), "23.06€" ],
+        [ "ESCs", ("3x ZTW Spider Series 18A OPTO Multi-Rotor ESC 2~4S (BLHeli/SimonK Firmware)", "https://hobbyking.com/de_de/ztw-spider-series-18a-opto-multi-rotor-esc-2-4s-blheli-simonk-firmware.html"), "24.99€" ],
+        [ "Motors CW", ("2x Multistar Elite 2204-2300KV Multi-Rotor Motor 3-4S (CW Prop Adapter)", "https://hobbyking.com/en_us/multistar-elite-2204-2300kv-multi-rotor-motor-cw-prop-adapter.html"), "23.90€" ],
+        [ "Motors CCW", ("1x Multistar Elite 2204-2300KV Multi-Rotor Motor 3-4S (CCW Prop Adapter)", "https://hobbyking.com/en_us/multistar-elite-2204-2300kv-multi-rotor-motor-ccw-prop-adapter.html"), "12.45€" ],
+        [ "Props", ("10 Pairs LDARC 5x4.5x3 5045 5 Inch 3-Blade Propeller CW CCW", "https://www.banggood.com/10-Pairs-LDARC-5x4_5x3-5045-5-Inch-3-Blade-Propeller-CW-CCW-for-RC-FPV-Racing-Drone-p-1067877.html?cur_warehouse=CN&ID=223"), "6.95€" ],
+        [ "Cam", ("Sony 700TVL PAL FPV Camera", "https://amzn.to/3i0cUh8"), "15.00€" ],
+        [ "VTx", ("SkyZone TS5823 5.8GHz 32CH A/V 200mW Mini FPV Transmitter", "https://hobbyking.com/en_us/skyzone-ts5823-5-8ghz-32ch-a-v-200mw-mini-fpv-transmitter-v2.html"), "17.12€" ],
+        [ "OSD", ("Minim OSD v1.1", "https://hobbyking.com/en_us/minim-osd-v1-1.html"), "19.79€" ],
+        [ "Rx", ("FrSky D8R-XP 2.4Ghz Receiver (w/telemetry & CPPM)", "https://hobbyking.com/en_us/frsky-d8r-xp-2-4ghz-receiver-w-telemetry-cppm.html"), "25.66€" ],
+        [ "Battery", ("Turnigy 1400mAh 3S 40C Lipo Pack w/XT60", "https://hobbyking.com/en_us/turnigy-1400mah-3s-40c-lipo-pack-w-xt60.html?queryID=&objectID=78388"), "13.42€" ],
+        [ "OLED", ("128x64 I2C OLED", "https://amzn.to/3usYHMi"), "9.99€" ],
+        [ "", "Sum", "232.90€" ]
+    ]
+)
+%-->
+
+Here are some more photos.
+
+<!--%
+lightgallery([
+    [ "img/trifecta_photo_6.jpg", "Folded up, back view" ],
+    [ "img/trifecta_photo_7.jpg", "Folded up, front view" ],
+    [ "img/quanum_trifecta_1.jpg", "Front view with Xiaomi Yi" ],
+    [ "img/quanum_trifecta_6.jpg", "3D printed electronics mount on top" ],
+    [ "img/quanum_trifecta_4.jpg", "3D printed longer back leg, on copter" ],
+    [ "img/quanum_trifecta_5.jpg", "3D printed longer back leg" ],
+    [ "img/quanum_trifecta_7.jpg", "3D printed electronics mount" ],
+    [ "img/quanum_trifecta_8.jpg", "Copter closed up" ],
+    [ "img/quanum_trifecta_2.jpg", "Xiaomi Yi 3D printed holder" ],
+    [ "img/quanum_trifecta_3.jpg", "Poorly 3D printed camera holder" ]
+])
+%-->