Simchair MKIII I2C AB412-style collective head 3D printable model by hc625ma

Simchair MKIII I2C AB412-style collective head

Source: Thingiverse by hc625ma

The Simchair MKIII I2C AB412-style collective head is a free printable 3D model from Thingiverse by hc625ma. ----------------------------------------- IMPORTANT! PLEASE USE LATEST FILES FROM GITHUB: Visit for latest news and manuals! ------------------------------------------- Summary. You can download the STL file from the original listing below and print it at home.

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502 saves Source: Thingiverse Updated 2026-06-24

Tags: Simchair, MKIII, I2C, AB412-style, collective, head

About this model

----------------------------------------- IMPORTANT! PLEASE USE LATEST FILES FROM GITHUB: Visit for latest news and manuals! ------------------------------------------- Summary This is the AB412-style collective lever head. It’s not 100% scale, but is close enough and has quite a lot of stuff in it: two Arduino Pro Minis onboard, two hat switches, seven 3-way switches and three buttons on the top panel, and optionally up to two rotary pots on its sides, along with a mode switch. It also has some interesting software-driven features: -- four switch modes to cover all your needs -- you can choose which switches to use: toggle 3-way switches of spring-loaded ones in any combination -- DCS UH-1 idle stop compatibility mode – this thing can realistically start and stop the Huey, although it doe…

Frequently asked questions

Is this 3D model free to download?
Yes. Simchair MKIII I2C AB412-style collective head is free to download from Thingiverse. Click the "Download free STL" button above to open the original listing.
Where is the STL hosted?
The download is hosted by Thingiverse, not by Thinger. We link you directly to the original listing by hc625ma.
Who made this model?
Designed by hc625ma, published on Thingiverse. Please credit the creator when sharing your print online.
Can I print this at home?
Yes. This model is intended for home FDM and resin 3D printers. Check the original listing for suggested print settings like layer height and supports.

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