PLC emulating glue application controller
When the adhesive application controller was not accurate due to the host machine misalignment, hindering production, I developed a PLC system. This PLC detects the product and administers adhesive in sync with the conveyor speed. The system utilized an encoder to measure speed and optical sensors to detect product proximity. Upon logical processing, signals were sent to electrovalves connected to the applicator heads, enabling continuous adhesive application on optical sensor detection.
Home Automation
The project involves a 3D-printed case housing a Wemos board with an ESP8266 processor and built-in WIFI capabilities. Programming is done using the Arduino IDE. The board controls relays responsible for toggling lights on and off. Additionally, this versatile board can be repurposed for various other functions.
Wattmeter
Recently, my current meter broke. I used it for years to monitor electricity bills. I tried fixing it with the seller but couldn’t. Inside, I found ‘NodeMCU ESP8266’ and ‘PZEM-004T’ boards programmable with Arduino IDE. I managed to salvage it by programming Arduino to send data to a basic PHP API storing info in MySQL on regular hosting. The graph, showing Voltage, Current, Power Factor, Power, and Frequency, updates from the latest data. I enjoyed how easily the telemetry adapts to web interfaces.
PHP + AJAX + SQL Server
We implemented a system to track personnel entering underground mines using RFID devices called Tags. To ensure user confidence, we enabled each tag activation to display the corresponding individual on the lists. This process involved deciphering the databases of the tracking system, consolidating the information into a single SQL view. Subsequently, I utilized HTML-PHP-AJAX scripting to create an efficient solution. By streamlining the connections between tables into one SQL view, the query complexity was reduced. The outcome was a real-time, seamless, and accurate status update mechanism.
