OpenRC Parametric Chinook

OpenRC Parametric Chinook.

Software: https://github.com/projunk/ChinookESP32

This is a parametric version of Tom Stanton's Chinook design.

I have tried to make the Chinook fly using a naze32 flight controller with both cleanflight and betaflight, but could not achieve stable flight using the PID values that seem to work successfully for other people flying a similar design.

In the end I decided to program myself the flight controller software using an esp32 development board and a mpu6050 gyro/acceleration sensor; Joop Brokkings excellent tutorials did help me greatly with this. The developed software has been included with this design. The advantage of using the esp32 was that I could use the second cpu core to run a webserver which

1. shows the telemetry

2. allows changing PID settings on the fly.

Finally I achieved successful flight this way.

Required printed parts:

• BackWheelHolder (2x) (or BackWheelHolderFB)
• FrontWheelHolder (2x) (or FrontWheelHolderFB)
• Tire (6x)
• Rim (2x)
• RimWithScrewHeadHole (4x)
• FCMount (1x)
• FlangeBearingBracket (2x)
• InterMidCorner (1x)
• LeftCorner (1x)
• RightCorner (1x)
• MotorMount (2x)
• ServoMount (2x)
• LandingGearBracket (2x)
• LandingGearBracketLid (2x)

Optional printed parts:

• ServoMountWithBuzzerHole (1x)
• battery mount (1x)
• drill helper (1x)

Hardware:

• aluminum profile (15x15)
• length 80 mm (1x)
• length 340 mm (1x)
• length 30 mm (1x)
• length 100 mm (1x)
• flange bearing F623ZZ (2x)
• propeller (1 CW, 1 CCW) 10x4.5 (254x114 mm)

Electronics:

• servo:

https://nl.aliexpress.com/item/32679996711.html?spm=a2g0s.9042311.0.0.1ec64c4d6WdVg7

• motor: (2x)

https://www.aliexpress.com/item/Racerstar-BR2212-930KV-2-4S-Brushless-Motor-For-RC-Models-Rc-Airplane/32765242161.html?spm=a2g0s.9042311.0.0.27424c4dpIsAVW

• power distribution board: (1x)

https://www.aliexpress.com/item/PDB-XT60-Power-Distribution-Board-BEC-5V-2A-12V-0-5A-with-XT60-Plug-for-DIY/32862366031.html?spm=a2g0s.9042311.0.0.27424c4diC0N76

• ESC (2x)

https://www.aliexpress.com/item/M-30A-30A-SimonK-ESC-4pcs-with-BEC-For-RC-Quadcotper-Helicopter/32250741238.html?spm=a2g0s.9042311.0.0.27424c4dSotUu0

• Alarm Beeper, https://www.aliexpress.com/item/3pcs-F3-NAZE32-Flight-Controller-5V-Active-Buzzer-Alarm-Beeper-Electromagnetic-Into-SOT-Sealantss-Tube-Long/32775935165.html?spm=a2g0s.9042311.0.0.27424c4du0smXb
• esp32 development board:

https://nl.aliexpress.com/item/32864722159.html?spm=a2g0s.9042311.0.0.1ec64c4dFbKVTp

• mpu6050 gyro/acceleration sensor:

https://nl.aliexpress.com/item/2035923736.html?spm=a2g0s.9042311.0.0.1ec64c4dbJ5mRc

Remarks:

• Recommended materials: ABS/PETG (95% infill) for all parts except the tires in Ninjaflex (10% infill)
• Optional part "ServoMountWithBuzzerHole " can be used instead of "ServoMount" in case one wants to add an alarm buzzer. (see photo)

RELEASE NOTES:

Changes 2 May 2021:

• updated firmware. Lots of improvements to webservice.

Changes 4 May 2021:

• bugfix firmware

Changes 15 May 2021:

• moved software to github

Category: Vehicles