Phase 5 — LSM6DSO accel stream¶

Read accelerometer samples over the I2C already wired and print them on serial. No new wires.

Firmware¶

Changed. New folder firmware/05-accel/. Leave earlier phase folders untouched.

Preconditions¶

Checkpoint 4 passed at 0x6A
Phases 2–4 wiring still on

5.1 Flash¶

Stop any serial monitor on COM first.

cd firmware/05-accel
pio run -e esp32-s3-n16r8 -t upload --upload-port /dev/ttyACM0

Connected to ESP32-S3 on /dev/ttyACM0:
…
Hash of data verified.
Hard resetting via RTS pin...
========================= [SUCCESS] Took 13.71 seconds =========================

pio device monitor -b 115200 --port /dev/ttyACM0

seismo accel — phase 5
SDA=GPIO8 SCL=GPIO18 addr=0x6A
WHO_AM_I=0x6C (expect 0x6C)
Watch pitch/roll (degrees) when you tilt — |a| stays ~1 on slow tilt
ax=-0.02 ay=-0.02 az=+1.00  pitch=+1° roll=-1°

Print ~5 Hz. ax/ay/az in g. pitch/roll in degrees — those are what move when you tilt. A slow tilt does not change magnitude much; watch the angles (tens of degrees).

5.2 Validate by hand¶

Resting → az≈+1, pitch/roll≈0° (this lab: Z up).
Tilt the board → pitch or roll jumps by tens of degrees.
Note silk X/Y in lab-log.md.

Checkpoint 5¶

[x] Continuous accel lines on serial
[x] Rest vs tilt visibly different (pitch/roll °)
[x] Orientation noted for later UI (rest: Z ≈ +1 g, X/Y ≈ 0)

Stop here until checkpoint passes.

Next: Phase 6 — TFT fill