Programmable cylinder welder controller

This device was designed and built by me to ease the welding process of cylindrical surfaces. User can start/stop the welding torch along the way during welding. cylinder rotates while the torch remaining in a fixed position. user can record the welding macro to automate the process.

There are fixed number of steps to cover up full circumference of the cylinder. therefore we can calculate where to start/stop the welding torch during the cycle.

How to teach the controller.

First, user must switch the device into record mode. then user can operate the device to record the procedure of welding. device has COPIED the every step of operation. from the second work piece, user can PASTE his recording endlessly.

if you want more information about the device, please make a comment.

Comments

HP Pavilion 15 (hp 15bw504ax) no display repair - LA-E841P main board

In this repair case, a customer brought an HP Pavilion 15 laptop that was completely dead with no power indication. The laptop did not respond when the power button was pressed, and there were no charging or status LEDs. After opening the laptop and removing the bottom cover, I began troubleshooting by checking the main power input connector on the motherboard. When the power adapter was connected, the adapter initially supplied 19V, but the voltage immediately dropped to 0V. This behavior typically indicates that the main 19V rail is shorted on the motherboard. When such a short circuit exists, the adapter’s protection mechanism shuts down the output to prevent damage. Diagnosing the Short Circuit To locate the source of the short, I performed a standard motherboard diagnostic procedure by measuring the resistance between ground and the main power inductors. During this test, one of the inductors showed a direct short to ground. Further investigation revealed that this inductor belong...

How to wire long distance RS485 cables without communication errors

In industrial environments, long-distance signal wiring such as RS485 must be installed carefully to avoid electrical noise, signal distortion, and false triggering. Factories usually contain motors, VFDs, contactors, and high-current cables that can generate strong electromagnetic interference (EMI). Following proper wiring practices ensures reliable and stable signal transmission. Below are the best practices used in industrial automation systems. 1. Use Twisted Pair Cables For long-distance signal transmission, always use twisted pair wires. Twisting the wires helps cancel electromagnetic interference induced by nearby cables. For RS485 systems, cables similar to Cat5/Cat6 network cable work very well. 2. Use Shielded Cable in Noisy Environments Factories usually have electrical noise from, VFD drives Large motors Welding machines Switching power supplies Using shielded cables prevents noise from entering signal lines. Important rule - Connect the shield to ground at only...

Installing a push button in a electrically noisy environment

Installing a push button over a long distance in a noisy factory environment (motors, contactors, VFD drives, welding machines, etc.) requires proper wiring practices to prevent false triggering, signal noise, and unreliable operation. Below are the industrial best practices used in automation and control systems. 1. Use 24V Industrial Control Voltage For long-distance push buttons, avoid using 5V or logic-level signals. Factories usually use 24V DC control signals because they are more resistant to electrical noise. Typical wiring : +24V -> Push Button -> PLC Input / Controller Input Advantages, Better noise immunity Standard in industrial automation Compatible with PLC inputs 2. Use Twisted Pair Cable Long signal wires should use twisted pair cable. it r educes electromagnetic interference (EMI), Improves signal reliability and m inimizes induced noise from nearby cables 3. Use Shielded Cable In noisy factories with motors or VFD drives, use shielded twisted pa...

OptimRepairs

Search This Blog