switch node1 to wifi test

WIFI_FIX_NOTES.md

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+# WiFi Initialization Fixes - 2026-01-18
+
+## Problem
+Intermittent WiFi connection failures on Raspberry Pi Pico running node1.c
+- Error: "Failed to connect to WiFi"
+- Followed by panic: "WiFi initialization failed!"
+- Issue only occurred sometimes, not consistently
+
+## Root Causes
+1. Insufficient startup delay before WiFi initialization
+2. Watchdog timeout (60s) conflicting with WiFi connection timeout (60s)
+3. No retry logic if initial connection fails
+
+## Solution Applied
+Modified `node1.c` main() function:
+
+### Change 1: Increase Watchdog Timeout
+- **Line 157**: `watchdog_enable(60000, 1);` → `watchdog_enable(90000, 1);`
+- Changed from 60 seconds to 90 seconds
+- Prevents watchdog from triggering during WiFi connection attempts
+
+### Change 2: Increase Startup Delay
+- **Line 158**: `sleep_ms(2000);` → `sleep_ms(5000);`
+- Changed from 2 seconds to 5 seconds
+- Gives WiFi module more time to power up before initialization
+
+## Testing
+After rebuilding and flashing with these changes, test for stability over multiple boot cycles.
+
+## Next Steps if Still Unstable
+1. Add WiFi connection retry logic instead of panic on first failure
+2. Further increase watchdog timeout to 120s
+3. Reduce WiFi timeout to 30s with retry attempts
+4. Check WiFi module power supply stability