RS41-NFW v38

Version v38 is here.

• Bugfix for delay variable initialization, which could lead to overflow if set at 65 seconds or higher. Now everything perfect :).

Please carefully read the instructions before flight!
Questions? Don't hesitate and leave an issue.

RS41-NFW v37

Version v37 is here.

• Fox hunting mode, which can transmit a melody over NFM, CW pip, CW morse with additional message contents of location below voltage warning and battery voltage reporting. This mode operates in as low power consumption as possible (measurement circuits disabled, heaters disabled, GPS disabled, radio sleeping between transmissions).
• The gpsSpeed value in Horus v2 payload is now reported in km/h (instead of m/s as before).
• Small changes in startup and calibration procedure.

Please carefully read the instructions before flight!
Questions? Don't hesitate and leave an issue.

RS41-NFW v3.6

Version v36 - v3.6 - is here.

• Changes in button operation algorithm - user can select between (0)completely disabled button functions, (1)sonde shutdown on button press or (2)extended mode, which allows to change some parameters of the sonde.
• The button operation is available now throughout the whole operation of the sonde. In some limited areas (like calibrartion) the button can shutdown the sonde now.

Please carefully read the instructions before flight!
Questions? Don't hesitate and leave an issue.

RS41-NFW v3.5

Version v35 - v3.5 - is here.

• Fixed boom calibration issue, which could lead to worse humidity compensation accross the temperature range.
• Enhanced defrosting algorithm, that doesn't impact the readings now.

Please carefully read the instructions before flight!
Questions? Don't hesitate and leave an issue.

RS41-NFW v3.4

Version v34 - v3.4 - is here.

• Support for onboard humidity sensor reading (not the most accurate method, but gives reasonable readings with easy use).
• Humidity module calibration modes and auto-compensation (some parts of it known as zero-humidity check).
• Defrosting features.
• Reference resistors warming to maintain their temperature.
• Automatic temperature compensation for humidity module sensor readings.
• Depreciated oscillator heating capabilities - RTTY isn't widely used, especiallu at 75-baud and the option was very power hungry - now the resistors are used like from factory, to slightly warm up the reference resistors and capacitor.
• Thorough, detailed description of how everything works and how to set it up (real easy) is here: https://github.com/Nevvman18/rs41-nfw/blob/main/fw/OPERATION_MANUAL.md#sensor-boom

Please carefully read the instructions before flight!
I probably won't upload more binaries, because there are too much customization options now.

RS41-NFW v3.3

Version v33 - v3.3 - is here.
Also, best wishes for 2025.

• Added an option to disable the button operation.
• New dataRecorder feature, that saves most important statistics from flight and transmits them in APRS comments once for a specified time (by default every 10 minutes).
• Flight computing abilities, that measure flight parameters (min/max values; flight, burst and landing phase detection, etc.).
• New ultraPowerSaveAfterLanding feature, that lowers the power consumption as much as possible 30 minutes after landing (GPS is fully OFF, sensors and peripherals get disabled) and transmits the last coordinates every 10 minutes via Horus and APRS (+ dataRecorder statistics).
• Added a watchdog that resets the CPU after specified time (2 weeks by default) to protect from overflowing.

Please carefully read the instructions before flight!

RS41-NFW v3.2

Version v32 - v3.2 - is here, being another large update.
Merry Christmas!

• Added APRS 2 reporting modes - normal HAB tracking format and WX report format for weather station use.
• GPS operation modes - disabled, max performance, power saving. Together with automatic switching to ensure the best power consumption with reliable tracking.
• New feature, which transmits Horus packets as fast as possible (every 6s) at low altitudes (< 1km) for specified time when descending, to ensure that the lowest frame possible is captured.
• RTTY and Morse TX format now compliant with UKHAS formatting.

Please carefully read the instructions before using the device!

RS41-NFW v3.1

Version v31 - v3.1 - is here! Being the largest update by now.

• Added APRS support (not copied) in standard format, WX format coming soon
• GPS no-fix timeout watchdog (resets the chip if it can't get a fix for long enough, by default 30 minutes)
• GPS performance improvement in position gathering (if sonde has no fix, the radio transmits every 2 minutes! Helps much in speed of positioning)
• 2nd Horus TX frequency (with alternating mode and repeating packets)
• Code clean-up
• Other small fixes and preparations for next releases

Please carefully read the instructions before using the device!

RS41-NFW v3.0

Version v30 - v3.0 - is here! (Not a big milestone between v2.x and v3.x, just an unplanned versioning)

• Added vertical velocity calculation and reporting via Horus v2. Calculated value is an average between transmissions.
• New and more accurate synchronization of delays between TX modes, fixnig issue were the delay was doubled in certain conditions (due to the coding error).

Please carefully read the instructions before using the device!

RS41-NFW v2.9

Version v29 - v2.9 - is here!

• Correction of setting the Dynamic Model 6 setting in the old GPS chips (RSM4x1, RSM4x2), now by sending hardcoded values extracted from u-center.
• And this being the final fix for GPS dynamic model setting - both old and new boards were somehow tested (new tested in-flight, old confirmed through the u-center's ACK frame reading and will be tested in-flight soon). GPS tracking should be now trustworthy (still no reverse verification mechanism, but shouldn't be for now a big concern).

Please carefully read the instructions before using the device!