Dynamic Industrial Logic Pass Box Controller

@tshibsamuel477

Hi there, I’ve carefully read your project description and I fully understand the complete logic and industrial requirements for this dynamic pass box controller, including the dual-door interlock, UV and blower process cycle, HMI-based settings and monitoring, HEPA differential pressure supervision, alarm handling, and manual/auto operation. With my background in mechatronics and embedded systems, I have solid experience in industrial controller design, custom PCB development, embedded firmware, sensor integration, relay-driven systems, and HMI-based machine control. I’m comfortable working with UART HMIs, pressure sensor acquisition, timed process logic, safety interlocks, and low-cost but reliable hardware selection for production-oriented designs. I can help you design the full controller professionally from schematic to PCB and firmware, making sure the logic is robust, the alarm conditions are handled correctly, and the HMI interaction is clear and practical for real operation. I can also optimize the BOM where needed to keep the design low cost while maintaining good quality and reliability. Given my experience, I’m confident I can deliver this efficiently and professionally. Just send me a message and we can get started right away. Best regards, Samuel Tshibangu

@stolzenterprises

The professional with 16 years of experience in Industrial Automation. ^^Development,Commissioning of PLC Control System, HMI and SCADA^^ ◾PLC- Siemens [S7-1500F/H, S7-400, S7-400F/H/R, S7-300, S7-1200, S7-200, S5, TI PLC, LOGO!] Rockwell [(Allen Bradley)- SLC500,MicroLogix,CompactLogix.] Schneider [Zelio, M171/72] Automation Direct [DirectLogic Click PLC] Unitronic [V200-18-E3XB Controller] Delta [Delta DVP ES2] Click [C2 series] ◾HMI- Siemens ** Weintek ** Kinco ** Unitronics ** Hitachi ** Schneider ** Wecon ** DeepSeaElectronics** EZ Automation**Maple ◾SCADA - WinCC ** In-Touch Wonderware ** Citect ** Ignition ◾VFD- Siemens, Rockwell-AB, ABB, Telemechanique, SEW and Danfoss, Hitachi ◾ Industrial Networks- PPI-MPI ** Profibus ** AS-i ** Profinet ** Ethernet ** Modbus RTU/Modbus TCP ◾ OPC - PC Access ** OPC Scout ** OPCUA ** Metrikon ** Kepware ◾ Project Documentation- ISA88/95, GAMP, 21CFR Part11, VP, URS, FRS, DS, IQ, OQ, PQ, SOP. ◾ Programming Languages - C# ** VBA ** VB.net ** Javascript ** Python ◾ Arduino Uno ** RS485 ** Ethernet shield ** Data Logging ◾Raspberry pi ** Raspi Camera ? Networking Devices - Siemens ** Teltonika **NO OFFSITE COMMUNICATIONS**

@CauaAlves

Hello! I'm an embedded systems engineer with strong experience developing industrial controllers using ATmega328P, UART-based HMI (DWIN), analog sensors, and interlock logic for cleanroom/pass box applications. Understanding your needs: A complete dynamic pass box controller with interlocked doors, automated cycle (blower + UV + timer), HEPA differential pressure monitoring (MPXV7002DP), alarms, and a 7" DWIN HMI for settings and real-time display. My plan: Develop firmware in C for ATmega328P implementing full interlock logic (doors cannot open simultaneously). Implement the automated process sequence: unlock Door-1 → cycle start after close → blower + UV ON with HMI timer → unlock Door-2 after cycle. Integrate analog pressure sensor via ADC with real-time monitoring and alarm if below setpoint. Establish reliable UART communication with DWIN HMI for editable parameters (UV time, blower time, pressure setpoint, etc.) and status display. Add buzzer alarm, LED indicators, manual/auto modes, and timeout protections. Provide clean, well-commented code, BOM confirmation, and basic PCB layout guidance. Deliverables: Full C source code for ATmega328P HMI configuration files and screen layout Detailed logic documentation and testing guide I focus on reliable industrial logic and clean implementation. Please share any existing code or hardware photos so I can start developing the firmware accurately. Ready to deliver a stable and functional pass box controller.

@ThynkLoop

Hi, I can develop a complete industrial pass box controller system with reliable interlock logic, HMI integration, and safety-focused automation. I have experience in embedded systems and industrial control. I will design the PCB based on ATmega328P (or suggest a better alternative if needed), implement robust firmware for door interlocking, process sequencing, alarm handling, and integrate the UART-based HMI for configuration and monitoring. The system will be stable, easy to use, and suitable for real-world industrial environments. Scope: *Controller PCB design (MCU, relays, power section) *Firmware development (door logic, timers, alarms, modes) *HMI integration (UART communication, parameter control) *HEPA pressure sensor interfacing *System testing logic and validation Deliverables: *Schematic and PCB files *Embedded firmware *HMI communication logic *Basic documentation Approach: *Implement safe and fail-proof door interlock logic *Use structured state-machine firmware design *Ensure accurate sensor reading and alarm handling *Optimize system for reliability and industrial use *Validate full operation sequence I will deliver a robust, reliable, and industry-ready pass box controller system.

@manoval09

Door interlock safety is your critical requirement—if Door-1 and Door-2 both open, you create contamination and complete system safety failure. I'll design and implement the mutual exclusion state machine, UART HMI protocol integration, HEPA differential pressure monitoring, UV/blower/alarm sequencing logic, and industrial-grade embedded firmware. Complete with documentation, testing, and on-site deployment and support. ₹10,625, 5 days. Best regards, Val

@soumitrab22

Hi No problem, I will design for you a small cost effective PCB which will take timing cues from the HMI for the various peripheral and run them according to the timing and sequence you have given. This will be a simple 2 layer board with terminal connectors etc. for the peripherals. The lights and blowers - are they mains 220V ? Quick turnaround assured with full gerber set for manufacturing.