FIXPERTS | Office Chair Stopper

This project is designed for those who need stability in getting up or sitting on an office chair. With the help of the device, the chair does not roll and makes it safe for use.

| 1 X electric linear actuator LD3 800N Of the MOTEK company which is at the following link: https://www.moteck.com/pro-ld3-line-actuator.html

| Download the 3D file which is at the following link: https://www.thingiverse.com/thing:5219774/files

| 1 X 12V 2.6AH lithium battery - Battery case consisting of 3 cells of 18650 3.7V 2.6AH + bms

| 1 X battery charger.

| 2 X push buttons in different colors.

| the following Arduino components:

- Arduino remote

- Arduino nano

- Arduino Hbridg

| 1 X Epdm sheet measuring 30X30 with a thickness of 1.5 cm.

| 1 X 9.8 mm diameter stainless steel pipe 100 cm long.

| 1 X 3 mm diameter stainless steel rod 15 cm long.

| 12 X screws 4.5 mm in diameter and 60 mm long, Acquired 12 matching nuts.

| 2 X screws 4.5 mm in diameter and 30 mm long, Acquired 2 matching nuts.

| 2 X screw 2.8 mm in diameter and 15 mm long.

| A strip of fabric 2.5 cm wide.

| Male and female scotch tape 2.5 cm wide.

In this link you will find the link to download the 3D file:

It is highly recommended to print the file from ABS filament, in order to keep the product durable over time.

Print settings:

- 0.4mm Nozzle.

- 0.2mm Layers.

- 5 Top layers.

- 4 Bottom Layers.

- 4 Perimeters.

- 23% Infill.

The electric linear actuator we use is capable of lifting up to a weight of 80 kg and It's operates on a 12V DC current.

If you want to buy a electric linear actuator from another company, it is important that you buy one with the same technical specifications as the MOTEK LD3 electric linear actuator.

This is its technical specifications for your reference.

Cut the pipe into three units, each 220 mm long.

Sand the end of the rod in a rounded shape so that all the grads are cleaned.

Drill a hole 3 mm in diameter and 5 mm from the end of the pipe.

Cut the 3 mm stainless steel rod into three units, each 5 cm long.

Solder the Arduino components (Arduino remote, Arduino nano, Arduino Hbridg) with the lithium battery and the electric linear actuator According to the soldering map.

Attached file with a ready-made code for the Arduino.

N1 - 4.5 mm nuts

LD - LD3 electric linear actuator

A1 - Arduino drawer

B1 - lithium battery

S1 - 60X4.5 screw

S1 - 60X4.5 screw

P1 - stainless steel pipes

R1 - connecting rod

C1- Electric Linear Actuator connector

S2 - 30X4.5 screw

N1 - 4.5 nuts

L2 - Bottom Leg

R2 - Security Rod

| Sew the plastic connector to the edge of the fabric strip.

| Sew the male and female scotch tape to the strip of fabric.

B2 - push bottom

N2 - push bottom nuts

AR - Arduino remote control

L1 - Sewn fabric strip

S3 - 2.5X15 screw