7 Segment Mechanical Counter, Version 2.2, Ratchet, With Printed Countersunk Screws

Digital mechanical 7 segment sequential counter
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updated August 4, 2024

Description

PDF

See latest version, v3.0:  https://www.printables.com/model/959686-7-segment-mechanical-counter-version-30-ratchet-fo

 

Version 2.2 of the 7-Segment mechanical counter. Improved design. This particular model is a sequential counter (numbers 0 - 9) that receives a linear input to cycle the display.

See video here:

 

Quantities of each 3D printed component for a complete assembly:

(1) - BODY_v2.1 (for printed screws, updated 5/5/24)

(1) - SEG_PLATE

(1) - MID_PLATEv2.2  (for countersunk screws, updated 7/10/24)

(1) - BACK_PLATE_v2.2  (for countersunk screws, updated 7/10/24)

(4) - SCREW_v2.2  (for countersunk screws, updated 7/10/24)

(2) - SEG A

(2) - SEG B

(2) - SEG C

(1) - SEG D

(2) - FOLLOWER A  -  (updated 5/23/24, reduced chamfer)

(2) - FOLLOWER B  -  (updated 5/23/24, reduced chamfer)

(2) - FOLLOWER C  -  (updated 5/23/24, reduced chamfer)

(1) - CAM A1  -  (updated 5/23/24, reduced chamfer)

(1) - CAM A2  -  (updated 5/23/24, reduced chamfer)

(1) - CAM B1  -  (updated 5/23/24, reduced chamfer)

(1) - CAM B2  -  (updated 5/23/24, reduced chamfer)

(1) - CAM C1  -  (updated 5/23/24, reduced chamfer)

(1) - CAM C2  -  (updated 5/23/24, reduced chamfer)

(1) - CAM D1

(1) - CAM D2

(2) - STACK_GEAR

(2) - SYNC_GEAR

(2) - SPRING

(2) - SPRING_DRUM

(1) - PUSH_ACTION_v2.1  -  (updated 5/23/24, increased length and diameter of shafts that engage SPRING_DRUM)

(1) - PUSHBUTTON

 

Non-3D Printed components:

(1) - Type #19 rubber band (2mm x 90mm)

(1) - Type #31 rubber band (3mm x 60mm)

 

Material:  PLA
Layer Height:  0.2mm
Supports:  No

Based on a 0.4mm nozzle

 

ALTERNATE OPTIONS:

2-digit body:  https://www.printables.com/model/869296-7-segment-2-digit-mechanical-counter-body-version

 

3-digit body:  https://www.printables.com/model/889859-7-segment-3-digit-mechanical-counter-body-version

 

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Model origin

The author marked this model as their own original creation.

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