WIRELESS SENSOR PROTOTYPE RECORD
Article: https://yenra.com/wireless-sensor-networks/system.html
Prepared: September 8, 2026. Save and edit this plain-text record locally.
Purpose: preserve an interpretable received observation and its provenance.

EXERCISE SCOPE
Documented walkthrough: Zephyr 4.2.0 peripheral_ht on nRF52840 DK.
Nordic TEMP measures chip-die temperature. An unavailable sensor can select
simulation. This exercise is not a body or calibrated room thermometer.
Yenra has not built or hardware-tested this example.

BUILD AND RECEIVER
Board model/revision / stable physical source_id:
Zephyr revision / SDK / host environment / build configuration:
Firmware image hash or build reference:
Receiver/client name and version:
Console startup evidence: sensor available or simulation selected:
Sensor fetch/channel errors observed:
GATT Temperature Measurement indications enabled:

FIELD DEFINITIONS
source_id: your stable label for the physical board
quantity: die_temperature for this exercise
value: received decoded numeric value; leave blank when unavailable
unit: degC for degrees Celsius
observed_at: receiver observation time, ISO 8601 with UTC offset or Z
origin: sensor / simulated / unknown, based on initialization evidence
method: manual receiver transcription or the actual capture method
firmware: exact sample and revision
quality: limited evidence checked; record errors or gaps explicitly
A receiver time is not a sensor sampling timestamp.

RECORD AREA (repeat this block for observations)
source_id:
quantity:
value:
unit:
observed_at:
origin:
method:
firmware:
quality and console/log reference:

FICTIONAL OBSERVATION -- replace with your own evidence
source_id: bench-dk-01
quantity: die_temperature
value: 27.25
unit: degC
observed_at: 2026-09-08T14:00:00Z
origin: sensor
method: manual receiver transcription
firmware: Zephyr 4.2.0 peripheral_ht
quality: no error observed (limited console check, not calibration)

RECOVERY TEST
Disconnect time / reconnect time / indication subscription repeated:
Gap or missing values / first valid received observation after recovery:
Startup source rechecked after power cycle:
Open defect / next step / owner:

Source and build prerequisites:
https://raw.githubusercontent.com/zephyrproject-rtos/zephyr/v4.2.0/samples/bluetooth/peripheral_ht/README.rst
https://docs.zephyrproject.org/4.2.0/boards/nordic/nrf52840dk/doc/index.html