Armortek

I did an up-down test by connecting the actuator that arrived yesterday.
The speed came out well as planned and I will install it on the turret as soon as possible and conduct a motion test.
The control method for stabilization of the main gun is to be carried out by measuring the angular velocity and converging the displacement to zero, and currently Arduino UNO and MPU-9250, and the arrival of the TCS3200 sensor for collision prevention, and customizing the open source.



Youngjae

Good luck Youngjae. My experiments with the Arduino and the MPU9250 have proven that good results can be achieved.

Vince

Vince Cutajar wrote: ↑

Wed Apr 08, 2020 12:04 am

Good luck Youngjae. My experiments with the Arduino and the MPU9250 have proven that good results can be achieved.

Vince

After watching Vince's experimental video, I was convinced that if the actuator reacted quickly, it would be a success.
Thank you.

Youngjae

Today, I installed the actuator that I had prepared in the turret and finished the test.
Results respond very quickly as expected.



On weekends, I work on the recoil system and start stabilizing.

Youngjae

Four months later, I re-installed the thermal sleeve that I separated in January.
The main gun was previously reinstalled with LEDs and a new 6mm hose to export the smoke.
The changed recoil is expected to have a noticeable motion due to its increased movement.
Arduino Uno, that will control stabilization operations, arrived today.
But until the Gyro sensor arrives, the pneumatic recoil is decorated like a P&ID, but I'm waiting for a small vibration mount.

Youngjae

Today, I placed the Recoil-driven Compuressor, Air Storage Tank, and Solenoid Valve inside the turret based on p&id, and checked that there was no interference from the wiring or tube according to the high angle and low angle of the main gun.
There should be a 6mm T fitting and an elbow, and I did the possible work first, waiting for the pressure gauge to arrive.

Youngjae

Can't wait to see it working Youngjae.

Vince

Vince Cutajar wrote: ↑

Sun Apr 12, 2020 1:59 pm

Can't wait to see it working Youngjae.

Vince

To meet Vince's expectations, I am studying Arduino coding very hard.

Yesterday, I reviewed my P&ID, fixed the internal pipes and wiring of the turret, and made new bolt holes to fix the equipment and air fittings.
It's a mess because I haven't cleaned up the lines yet, but the connection is exactly the same as the P&ID drawing.
A small anti-vibration mount for the compressor motor has not yet arrived and a pressure gauge has not arrived to check the air pressure.
The delivery system is different from the past, so the progress is going very slowly.
I ordered a small manual chain block for 250kg.
Because my Chieftain demanded more and more strength and precision in the separation and coupling of turret and body.
After the trial run is completed, the turret will be removed before final assembly, and cleaning and finishing painting will be carried out.
Tomorrow is a temporary holiday, so I will do some tests on my chieftain.
First of all, I'm going to install a 3-axis Gyro for the airplane and check for any errors.
I want to experience the errors in person.
It's a great pleasure to be able to verify the stages of error or success.

Youngjae

Waiting for the pressure gauge and mount, I am conducting a wiring and operation test again after 5 months.
I'm carefully checking every function and it is very smooth until yesterday.

Youngjae

I encountered a problem when I applied lithium-based batteries.
The voltage supplied when the battery is buffered is 28.8 to 29V, which is not a problem with Motion Controller A, but a problem with Motion Controller B.
Motion controlro B does not operate if the test results in 25V or higher.
I'm considering three options to address the benefits.
First of all, the motion controller B is operated by applying the DC-DC stepdown module.
But this method raises questions about effectively responding to increased motors.
The second is to replace motion controller B with Sabertooth dual 25A motor driver.
If I use this method, I thought I would be able to handle both the increased motor and the instant peak current in the turret, so I ordered 2 sets.
The last is a combination of the Sabertooth dual 25A motor driver + DC-DC stepdown modules.
Motion Controller B is a combination of a compressor motor installed in the turret and a DC-DC step-down module that will stop 24V in front of the solenoid valve and esc, replacing it with a Sabertooth dual 25A motor driver.
At this time, I ordered the part in the 3rd method.
Because procurement will take time, I will spend this weekend setting up a chain block for the tank and gardening.

Youngjae

I tried to hang the tank.
From now on, the turret can be easily joined or separated.

Youngjae

I modified the P&ID for the power system and control system while waiting for the order for several days.
Today, Sabertooth 2*25 and DC-DC converter arrived at home, so I'm going to do some work at home after work.
The delay in procuring orders has turned my personality into a very annoying person.
The components to complete the system configuration are the fitting for the pressure gauge, the vibration proof mount and the mpu9250.

Youngjae

After work, I had dinner and finished a short walk in the house yard.
I will exchange the function of motion controller B with the product that arrived today.
The deep switch of the motor controller was adjusted according to the manual.
Especially, it's common to use exponential curves at the center of the stick, but I adjusted it to linear mode because it has to be linearly proportional to the reaction of the gyro.
And I will adjust the power supplied by the sound module to 24V. The sound module worked well even when supplying 29V. However, I will install a DC-DC stepdown converter here to ensure safety by removing electrical shock as it is a valuable part of the chieftain's engine sound output.
The range of operation of the pneumatic solenoid valve for the recoil is 24 to 26V, where the voltage supplied to the coil components must be fixed at 24V.
Therefore, I will distribute it from the power line to the sound module adjusted to 24V.

Youngjae

I will be interested to see how the buck converter handles changes in battery voltage, as I would have thought it will collapse if the input voltage drops below about 25.5V.

Adrian.

The final dipswitch has been modified as shown in the picture.
The motion test of the new motion controller B was well done. Especially, the inertia moment of horizontal and vertical movement of the turret was controlled with ease.



Youngjae