Main - phase3 merge

docs/Pin Lists in OpenPLC.txt

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+Arduino Nano RP2040 Connect
+Digital Inputs = 2, 3, 4, 5, 6, 7
+Digital Outputs = 8, 9, 10, 11, 12, 13
+Analog Inputs = A1, A2, A3
+Analog Outputs = 14
+
+Raspberry Pi Pico W
+Digital Inputs = 6, 7, 8, 9, 10, 11, 12, 13
+Digital Outputs = 14, 15, 16, 17, 18, 19, 20, 21
+Analog Inputs = 26, 27, 28
+Analog Outputs = 4, 5
+
+Arduino Nano Every
+Digital Inputs = 2, 3, 4, 5, 6
+Digital Outputs = 7, 8, 10, 11, 12, 13
+Analog Inputs = 15, 16, 17, 18, 19, 20, 21
+Analog Outputs = 9, 14

docs/ProjectTracker_5VArduino_OpenPLC_TrainerBuild.md

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+# 🔹 ProjectTracker_5VArduino_OpenPLC_TrainerBuild
+
+## 🔢 Hardware Setup
+- [ ] Mount Arduino Uno/Nano Every on base panel
+- [ ] Install breadboard (for LEDs and button wiring)
+- [ ] Wire Green Start Button (5V, INPUT_PULLUP)
+- [ ] Wire Red Stop Button (5V, INPUT_PULLUP)
+- [ ] Wire optional Fault Button (5V, INPUT_PULLUP)
+- [ ] Install and wire Green, Red, Yellow LEDs with 220Ω resistors
+- [ ] Connect 5V and GND rails cleanly (shared power)
+
+## 🔢 OpenPLC Software Setup
+- [ ] Flash OpenPLC firmware to Arduino
+- [ ] Confirm OpenPLC runtime can detect Arduino board
+- [ ] Create simple Ladder Logic program (Start/Stop latch)
+- [ ] Test button functionality inside OpenPLC Editor
+- [ ] Verify LED outputs toggle based on Ladder Logic
+
+## 🔢 Testing and Verification
+- [ ] Power cycle test (board restarts safely)
+- [ ] Manual button press test (physical and OpenPLC input response)
+- [ ] LED feedback test (correct LED for each state)
+- [ ] Safety/Fault testing (if optional fault button wired)
+
+---
+
+# 🔹 Project Tracker: 12V M5Stack StamPLC Industrial Trainer Build
+
+## 🔢 Hardware Setup
+- [ ] Mount StamPLC on trainer base panel
+- [ ] Wire 12V input power correctly (common ground for devices)
+- [ ] Install 22mm Green Start Button (NO contact)
+- [ ] Install 22mm Red Stop Button (NO contact)
+- [ ] Install 22mm Red Emergency Stop Button (NC contact preferred)
+- [ ] Wire 12V IR beam breaker sensors (future phase)
+- [ ] Mount relay control field (motor light control etc.)
+- [ ] Setup I2C GPIO expander (optional)
+
+## 🔢 Arduino/PlatformIO Software Setup
+- [ ] Setup PlatformIO project or Arduino IDE sketch for StamPLC
+- [ ] Confirm basic digital input reading (Start/Stop/E-Stop)
+- [ ] Confirm relay outputs activate correctly
+- [ ] Implement basic control logic (Start/Stop Motor, Light Control)
+- [ ] Plan future RS485 communication wiring
+
+## 🔢 Testing and Verification
+- [ ] Full power-up test (12V bus operational, safe GND sharing)
+- [ ] Button and LED response verification
+- [ ] Relay output verification (switching 12V loads)
+- [ ] Safety lockout testing (Emergency Stop triggers output shutdown)
+
+---
+
+# ✅ Final Notes
+- Progress milestones allow methodical development.
+- Clean wiring and GND management at each step.
+- Avoid mixing 5V and 12V systems during build/testing.
+- Expand modularly: add RS485, sensors, and advanced functions later.
+
+---
+