HaM5dsp - Another battery.
Built-in battery management with real-time health monitoring and power-saving features ensures efficient, cable-free portable HF operation.
I set out for HaM5dsp to solve the problem of improving reception quality when operating an HF station in portable mode, out in the field. Some of you know I was pioneering SOTA program in YO and I do like portable HF.
Keeping the HF portable setup light and neat means eliminating one cable effectively means one more battery to worry about. Fortunately, the hardware platform includes a built-in battery managed by the dedicated APX192 power management IC. This will carry the “responsability”…
To monitor battery parameters, simply long-press the battery icon in the top-right corner of the touchscreen, and a page with useful information will open.
The user can set the nominal battery capacity in the Setup menu (default: 500 mAh), and on the information page, HaM5dsp will calculate—during each continuous, uninterrupted discharge cycle from 100% down to 5% (3.3 V)—the actual battery capacity and its state of health.
For efficient power management, the user can adjust the display brightness (Backlight) and enable an Energy Saver mode that turns off the LCD, thereby extending operating time.
When the Energy Saver is active, HaM5dsp will continue to operate and a Blue LED heartbeat will let the user know that… A long touch on the LCD will get back the LCD.
The tests I did show an average current draw of 90–120 mA depending on brightness level, and around 80 mA with Energy Saver enabled.
The charging is done via USB-C cable with a maximum current of 500mA.