Live E2E on the in-browser ESP32 engine surfaced two freezes:
- i2c.scan() stalls on the engine's I2C controller (first probed address
has no device and the transaction never completes). The bmp180 shim now
probes 0x76/0x77 directly via readfrom_mem.
- BlynkLib's blocking socket.connect() froze the demo when the second
outbound connection stalled. The vendored BlynkLib now sets a 10s
timeout before connect, and main.py catches OSError and falls back to
the offline no-op Blynk (probe-then-reconnect removed — one bounded
connection instead of two).
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