Lee Djavaherian
TrillSat-1.1.tgzAn updated version of the TrillSat source code, to include the new THUMP haptic system, licensed under GPL 3.0, including the OpenSCAD 3D part generator, along with the C, Lua, Python, and BASH sources for the 4 interoperating CPUs and the electrical schematic.gzip - 2.08 MB - 08/25/2018 at 03:15 |
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TrillSat-1.0.tgzA copy of the first released tarball of the TrillSat source code, licensed under GPL 3.0, including the OpenSCAD 3D part generator, along with the C, Lua, Python, and BASH sources for the 4 interoperating CPUs and the electrical schematic.gzip - 2.08 MB - 06/02/2018 at 03:36 |
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trillsat.webmAnimation of TRILLSAT-1 in WebM VP9 format, showing the rocking, orbiting motion (rough estimates only, exaggerated for clarity). This file is about 88% smaller than the original animated GIF.video/webm - 1.11 MB - 06/07/2018 at 06:12 |
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trillsat_schematic.pngFull electrical schematic, version 1.Portable Network Graphics (PNG) - 2.03 MB - 04/07/2018 at 06:47 |
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trillsat_power_regulation_circuit.pngA simplified diagram of the power regulation circuit controlled by ATtiny 1634 (Huckleberry)Portable Network Graphics (PNG) - 271.62 kB - 04/07/2018 at 07:35 |
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trillsat_circuit_board_b_annotated.jpgCircuit Board B (annotated) - This is the solar and battery power regulation board controlled by ATtiny 1634 (Huckleberry)JPEG Image - 627.42 kB - 04/07/2018 at 07:04 |
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trillsat_circuit_board_c_annotated.jpgCircuit Board C (annotated) - This is the Gondola motor control/sensor board controlled by ATtiny 1634 (Sawyer)JPEG Image - 569.98 kB - 04/07/2018 at 07:04 |
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trillsat_circuit_board_a_annotated.jpgCircuit Board A (annotated) - This is the Raspberry Pi and UV-5RA power control board, with some misc. circuits controlled by the ESP8266 and the Raspberry Pi Zero.JPEG Image - 529.50 kB - 04/07/2018 at 07:04 |
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trillsat_3d_printer.jpgPrinting the Radio Box on the Folger Technologies Prusa i3 2020 printer.JPEG Image - 58.57 kB - 04/07/2018 at 08:07 |
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trillsat_sawyer_soldered.jpgExtension wires were soldered onto the ATtiny 1634 (Sawyer) to make soldering easier.JPEG Image - 79.21 kB - 04/07/2018 at 08:38 |
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trillsat_sawyer.jpgATtiny 1634 (Sawyer) the motor control microcontroller, soldered in place.JPEG Image - 105.69 kB - 04/07/2018 at 08:38 |
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trillsat_huckleberry_soldered.jpgJumper pins were soldered onto ATtiny 1634 (Huckleberry).JPEG Image - 137.77 kB - 04/07/2018 at 08:26 |
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trillsat_huckleberry_mount.jpgATtiny 1634, Huckleberry, the power regulation microcontroller sealed in hot glue and mounted in place.JPEG Image - 121.30 kB - 04/07/2018 at 08:26 |
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trillsat_flashlight.jpgA dollar-store flashlight was disassembled to remove 6 white LEDs.JPEG Image - 94.84 kB - 04/07/2018 at 08:16 |
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trillsat_leds_circuitboard.jpgSix white LEDs removed from the dollar-store flashlight.JPEG Image - 136.68 kB - 04/07/2018 at 08:26 |
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trillsat_leds_wired.jpgThe 6 white LEDs soldered to a jumper wire to act as a spotlight for the craft.JPEG Image - 30.23 kB - 04/07/2018 at 08:26 |
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trillsat_h-bridge_testing.jpgInitial testing of the H-Bridge (before the shoot-through circuitry was added)JPEG Image - 84.64 kB - 04/07/2018 at 08:26 |
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trillsat_h-bridge.jpgThis is the MOSFET H-Bridge installed into the cut off handle of the cordless screwdriver.JPEG Image - 154.80 kB - 04/07/2018 at 08:26 |
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trillsat_h-bridge_screwdriver.jpgThe Black & Decker cordless screwdriver showing the new MOSFET H-Bridge soldered in place.JPEG Image - 78.09 kB - 04/07/2018 at 08:26 |
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trillsat_hall_magnets.jpgThe South-polarized earbud magnets in the Magnet Holder.https://cdn.hackaday.io/files/1208895172114976/trillsat_endcap_hall.jpgJPEG Image - 49.00 kB - 04/07/2018 at 08:16 |
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trillsat_endcap_hall.jpgThe sensor Endcap, containing two unipolar Hall-effect switches and a temperature sensor.JPEG Image - 77.56 kB - 04/07/2018 at 08:16 |
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trillsat_hall_assembly.jpgThe Endcap, Capstan, and Magnet Holder assembly attached to the shaft of the cordless screwdriver.JPEG Image - 49.79 kB - 04/07/2018 at 08:16 |
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trillsat_ark_construction.jpgBuilding the wooden ark.JPEG Image - 59.58 kB - 04/07/2018 at 08:07 |
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trillsat_ark_closed.jpgThe closed wooden ark storage case which houses the TRILLSAT-1 prototype.JPEG Image - 33.35 kB - 04/07/2018 at 08:07 |
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trillsat_ark_open.jpgTRILLSAT-1 stored inside the Ark along with two wooden posts.JPEG Image - 44.55 kB - 04/07/2018 at 08:07 |
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trillsat_ark_mode.jpgThe TRILLSAT-1 prototype mounted in Ark Mode via posts attached to the storage and transportation ark.JPEG Image - 151.93 kB - 04/07/2018 at 08:07 |
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trillsat_frame_tackle.jpgThe steel cable, turnbuckle, shackle used to support the Test Frame mast from the opposing weight of the nylon tether, which uses the carabiner.JPEG Image - 53.67 kB - 04/07/2018 at 08:16 |
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trillsat_frame_folded.jpgThe wooden Test Frame folds up for storage.JPEG Image - 127.89 kB - 04/07/2018 at 08:16 |
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trillsat_frame_mode.jpgTRILLSAT-1 in actual testing on an angled tether using the Test Frame. Solar power was simulated using a 500 watt halogen work light.JPEG Image - 116.44 kB - 04/07/2018 at 08:16 |
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trillsat_in_ark_led.jpgTRILLSAT-1 inside the Ark with its LED spotlight on, providing illumination for demonstration.JPEG Image - 37.94 kB - 04/07/2018 at 08:26 |
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trillsat_bldc_inside_drive.jpgThis is the DVD drive that was opened to access the BLDC motor.JPEG Image - 170.33 kB - 04/07/2018 at 07:54 |
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trillsat_bldc.jpgThis is the BLDC motor board used for the Gyrofan removed from the DVD drive, containing 3 analog Hall-effect sensors.JPEG Image - 91.57 kB - 04/07/2018 at 07:54 |
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trillsat_gyro_bldc.jpgThe BLDC motor attached to the Gyrofan wheel.JPEG Image - 70.83 kB - 04/07/2018 at 08:16 |
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trillsat_gyro_weights.jpgSteel slingshot shot was use as an inertial mass for the gyroscope.JPEG Image - 57.65 kB - 04/07/2018 at 08:16 |
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trillsat_planetary_mass.jpgThe Planetary Mass filled with steel BBs, showing the slotted Planetary Rod that was later glued in place.JPEG Image - 145.04 kB - 04/07/2018 at 08:38 |
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trillsat_weighing_planetary_mass.jpgWeighing the Planetary Mass at around 458 grams (1 lb).JPEG Image - 58.72 kB - 04/07/2018 at 08:38 |
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trillsat_baofeng_interface.jpgThis is the packet radio interface created to connect the Baofeng UV-5RA, SYBA USB audio, and Raspberry Pi Zero.JPEG Image - 110.82 kB - 04/07/2018 at 07:54 |
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trillsat_baofeng_interface_shielded.jpgThis is the packet radio interface after it has been shielded. It sits in the Radio Box underneath the UV-5RA.JPEG Image - 132.58 kB - 04/07/2018 at 07:54 |
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trillsat_uv-5ra.jpgThe Baofeng UV-5RA with case, battery, and speaker removed, with power lines connected.JPEG Image - 84.08 kB - 04/07/2018 at 08:48 |
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trillsat_x-dragon.jpgThe X-Dragon 14 Watt solar panel that was disassembled to remove the SunPower panels.JPEG Image - 90.40 kB - 04/07/2018 at 07:41 |
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trillsat_solar_panel_extraction_backside.jpgThis is what the solar panels and charge controller looked like after removing them from the fabric case, wired in parallel.JPEG Image - 123.13 kB - 04/07/2018 at 07:41 |
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trillsat_solar_panel_hobby_knife.jpgThe stitches were remove with a hobby knife to remove the SunPower panels.JPEG Image - 80.59 kB - 04/07/2018 at 07:41 |
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trillsat_solar_panel_aviator_snips.jpgThe SunPower panels were trimmed with aviator snips.JPEG Image - 103.85 kB - 04/07/2018 at 07:41 |
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trillsat_solar_panel_copper.jpgThe panels were re-wired lengthwise, with copper tape covered with Kapton so they could fit inside the Solar Panel Frame assembly.JPEG Image - 205.36 kB - 04/07/2018 at 07:41 |
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trillsat_solar_panel.jpgHere is the assembled Solar Panel Frame assembly, a sandwich of acrylic sheet, SunPower cells, aluminum backplate, surrounded by PETG trim, sealed with silicone.JPEG Image - 21.41 kB - 04/07/2018 at 07:41 |
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trillsat_battery_warmbox_silicone.jpgThe Battery Frame was covered in acetic-acid free silicone caulk to act as a weatherproof gasket and create a battery warmbox as the aluminum is also the backplate for the solar panel.JPEG Image - 83.86 kB - 04/07/2018 at 07:54 |
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trillsat_battery_warmbox_aluminum.jpgThe aluminum sheet was painted with high emissivity black paint before assembly to the Battery Frame.JPEG Image - 42.92 kB - 04/07/2018 at 07:54 |
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trillsat_solar_panel_aluminum.jpgThis is the aluminum backplane to create the Solar Panel Frame assembly, bolted to the Battery Frame, which is sealed with an acetic-acid free silicone caulk to create a battery warm box.JPEG Image - 27.29 kB - 04/07/2018 at 07:41 |
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trillsat_battery_warmbox.jpgHere is the assembled battery warmbox, showing the high-emissivity paint on the aluminum sheet metal.JPEG Image - 123.93 kB - 04/07/2018 at 07:54 |
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trillsat_ikits.jpgThe iKits USB powerbank that was disassembled to extract the Lithium-ion cells and charge controller.JPEG Image - 101.50 kB - 04/07/2018 at 08:26 |
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trillsat_18650b.jpgThe NCR18650B Lithium-ion cells retrieved from the iKits USB powerbank.JPEG Image - 28.85 kB - 04/07/2018 at 08:07 |
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trillsat_temp_batt_and_panel.jpgTwo DS18B20+ temperature probes were installed in the Battery Frame, one on Batt 1, and one under the accelerometer against the solar panel.JPEG Image - 104.29 kB - 04/07/2018 at 08:38 |
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trillsat_lis3dh.jpgThe LIS3DH accelerometer board installed early on.JPEG Image - 119.07 kB - 04/07/2018 at 08:38 |
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trillsat_lis3dh_installed.jpgThe LIS3DH accelerometer board wired and operating.JPEG Image - 74.19 kB - 04/07/2018 at 08:38 |
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trillsat_mt3608.jpgThe 2 amp MT3608 DC-DC boost converter, set to 5 volts.JPEG Image - 108.83 kB - 04/07/2018 at 08:38 |
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trillsat_lm2587s-adj.jpgThe 5 amp LM2587S-ADJ DC-DC boost converter, set to 7.4 volts with an extra capacitor added to handle the H-Bridge.JPEG Image - 104.15 kB - 04/07/2018 at 08:38 |
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trillsat_case_open_annotated.jpgThis is the TRILLSAT-1 prototype in testing with the gondola removed (annotated)JPEG Image - 721.83 kB - 04/07/2018 at 07:54 |
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trillsat_diagram.pngExploded diagram of the 3D-printed assembly, inverted.Portable Network Graphics (PNG) - 543.20 kB - 04/07/2018 at 08:16 |
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trillsat_overview.pngGraphical illustration of how the craft would operate in actual use.Portable Network Graphics (PNG) - 607.82 kB - 04/07/2018 at 07:35 |
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trillsat_orbit.pngDiagram of the 3-"tridant" mechanics of the orbiting pendular mass as it interacts with the weight of the craft and the capstan hoist.Portable Network Graphics (PNG) - 305.71 kB - 04/07/2018 at 07:35 |
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trillsat.gifAnimation of TRILLSAT-1, showing the rocking, orbiting motion (rough estimates only, exaggerated for clarity)Graphics Interchange Format - 9.33 MB - 04/07/2018 at 07:23 |
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TrillSat
Texting Without Cell Towers, Power Grid, or the Internet: IoT meets AX.25 Aboard an Arboreal Space Elevator