search

adafruit / Adafruit_CAD_Parts

CAD files for various boards, components and parts
MIT License
1.06k stars 205 forks source link

Incorrect import? 2809 LIS3DH has incorrect dimensions and features, no components #142

Closed nicolasff closed 1 year ago

nicolasff commented 1 year ago

Hello,

I imported the model for the LIS3DH accelerometer breakout board today, trying both the Fusion 360 file (.f3d) and the STEP file provided in https://github.com/adafruit/Adafruit_CAD_Parts/tree/ea4f501efb3197b5fa934d310145f21a79ef87cc/2809%20LIS3DH.

The 3D model does not match the physical product, which made me wonder if these files were maybe for a different product and ended up in this directory by mistake. The git history for 2809 LIS3DH.f3d shows that it was edited and moved into its current directory with commit a13f14591e1ffddc5d5d0e0ac00b45189531eb14 ~5 years ago. I also opened the version of the .f3d file that was pre-edit/pre-move, but it still had the same contents.

→ Is there an accurate 3D model of this board available somewhere?

Visual comparison

Here is what the breakout board looks like (from the product page):

Adafruit 2809 – LIS3DH

and this is what both the Fusion 360 and STEP files contain (shown shaded with hidden edges):

image

There is only a single "body" in the .f3d file, unlike some other files which have different components on the PCB modeled separately.

Dimensions

The dimensions of the 3D object are 20.32×20.32×1.60 mm, with the larger holes having a diameter of 2.54mm (1/10") and the smaller ones 0.889mm (35 × 1/1000th of an inch).

I measured the breakout board with calipers at 25.59×17.79×1.60 mm.

djecken commented 1 year ago

Hello, thanks for reporting this issue. The models for the LIS3DH have been updated to the latest revision of the breakout board https://github.com/adafruit/Adafruit_CAD_Parts/tree/main/2809%20LIS3DH

nicolasff commented 1 year ago

Thank you! That was so quick. The new model looks great with lots of details, and has the dimensions I expected.