Expose the Koheron CTL200 thermistor setpoint (rtset) as a settable HA
number in ohms, clamped to SEED_RT_SETPOINT_MIN/MAX_OHM. The former
read-only setpoint sensor is replaced by this control. Add a read-only
seed temperature in °C, computed in firmware from the actual thermistor
resistance via an NTC β-model (constants in config.h; update once the
DFB1550LP thermistor R25/β are confirmed).
Verified end-to-end over MQTT: set/clamp/restore of rtset and the °C
conversion (10 kΩ → 25.00 °C).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Swept pump-1 to find real output: 1 W (30.1 dBm) at 4000 mA, 1.22 W at
4500 mA still unsaturated. External Thorlabs meter read 1.05 W vs 1.22 W
internal PD -> telemetry is ~0.5-0.6 dB optimistic, path-dependent; treat
amp/output*_power_dbm as indicative, not calibrated.
- README: full pump-vs-output table, PD-vs-meter calibration note, >1 W
output-connector warning, ramp/overshoot guidance
- config.h: PUMP_CURRENT_MAX_MA back to 4000 mA (1 W rating) after the
supervised over-rating sweep; added get_thresholds probe to agiltron driver
ESP32 firmware bridging the 1550 nm MOPA (Koheron CTL200 seed + Agiltron
M511 two-stage EDFA) to MQTT/HA as a single device. Telemetry and control
for both instruments verified end-to-end: MQTT command -> seed lasing ->
booster ramp to 27 dBm (~515 mW) at the documented 2500 mA operating point.
- PlatformIO/Arduino project, project-local venv, Makefile upload flow
- Koheron ASCII driver on UART2; Agiltron binary 0x55AA driver on UART1
- HA discovery (sensors, binary_sensors, switches, numbers); LWT availability
- Static IP, firmware current clamps on seed and booster pump
