HARDWARE ARCHITECTURE
SOLAK monitors, schedules, and hydrates — completely off the grid.
What it does: Converts ambient sunlight into 4.5V – 6.0V direct current (DC) photovoltaic energy during daylight hours.
What it does: Stores 3300mAh of energy to continuously power the off-grid node through night cycles and overcast days.
What it does: Wakes from 10µA micro-amp deep sleep, evaluates RTC schedules, checks soil moisture sensors, and executes pump logic.
What it does: Regulates fluctuating solar panel DC voltage and controls constant-current/constant-voltage (CC/CV) lithium charging.
What it does: Maintains temperature-compensated TCXO millisecond-accurate time without Wi-Fi connectivity or RTC battery drain.
What it does: Optically isolates high pump current, preventing electrical noise and reverse-EMF voltage spikes from affecting the microchip.
Real-time soil hydration meters, quick-trigger manual pump actuation, and active system status readouts.
Program millisecond-accurate RTC alarm interrupts, set auto-hydration windows, and adjust moisture thresholds.
Track photovoltaic solar panel output voltage, 18650 lithium battery state-of-charge, and historical power trends.
Built with industrial grade components to withstand outdoor UV exposure, wide temperature swings, and zero grid connectivity.
Hardware deep sleep reduces power draw to under 15 micro-amps between irrigation cycles. The TP4056 charge management module continuously safely tops up the 3300mAh Li-ion battery.
Automatic Soft-AP Captive Portal provisions Wi-Fi credentials effortlessly. If Wi-Fi goes offline, the node autonomously operates using stored RTC hardware schedules.
Low-power hardware alarm interrupts wake the microchip instantly when watering triggers, ensuring reliable zero-latency execution.