Custom firmware for Vaisala RS41 and Graw DFM-17 radiosondes with support for amateur radio use. Ideal for tracking high-altitude balloons. Supported modes include APRS, Horus 4FSK mode, CATS, morse code (CW) and additional digital modes like WSPR and FT8 via Si5351.
GNU General Public License v2.0
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Modified formula for voltage calculation on dfm17 #81
Modified the formula for battery voltage on the DFM17. Horus Binary only supports voltages up to 5v0. So, we now divide the value by 2. Also, I tweaked the multipliers a bit to provide a more accurate voltage between 5v6 and 6v6, which are likely to be the voltages seen in flight.
Modified the formula for battery voltage on the DFM17. Horus Binary only supports voltages up to 5v0. So, we now divide the value by 2. Also, I tweaked the multipliers a bit to provide a more accurate voltage between 5v6 and 6v6, which are likely to be the voltages seen in flight.