Update hardware and firmware documentation for new modules and features

- Removed outdated TODOs and legacy references in hardware documentation.
- Added details on the new CH32V203-based Sensor Module for CAN bus soil moisture sensors.
- Documented updates to the Battery Management System (CH32V203-based) replacing the older bq34z100 design.
- Refined sensor, pump, and power module descriptions with updated specifications.
- Expanded firmware documentation to include Rust-based ESP32-C6 platform details, new OTA procedure, and MQTT telemetry topics.
- Simplified toolchain setup and compilation process with updated scripts and instructions.
This commit is contained in:
2026-05-04 21:30:32 +02:00
parent ef0ec47d92
commit 776db785c4
6 changed files with 92 additions and 84 deletions

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@@ -11,8 +11,6 @@ tags: ["esp32", "hardware"]
<img src="pcb_back.png" class="grid-w50" />
{{< /gallery >}}
<!-- TODO: Add new screenshots of the modular PCB setup -->
{{< gitea server="https://git.mannheim.ccc.de/" repo="C3MA/PlantCtrl" >}}
## Modular Design
@@ -27,17 +25,25 @@ The system now consists of a **MainBoard** which acts as the controller and seve
* **Fully Open Source:** Designed in KiCad
## Available Modules
* **MPPT Charger:** Efficient solar charging for batteries.
* **Pump Driver:** High-current outputs for pumps and valves.
* **Sensor Interface:** Support for multiple moisture sensors.
* **Light Controller:** For LED nightlights or growth lights.
* **MPPT Charger:** Efficient solar charging for batteries using CN3795.
* **Pump Driver:** High-current outputs (up to 3A) for pumps and valves.
* **Sensor Module:** CAN bus-based moisture sensors using CH32V203 microcontroller.
* **Battery Management:** External BMS board with CH32V203 for battery monitoring.
* **Light Controller:** For LED nightlights or growth lights using AP63200.
## Sensor Module (CAN bus)
The standard sensor module features its own **CH32V203 RISC-V microcontroller**, which handles the measurement of soil moisture and communicates the results back to the MainBoard via the CAN bus.
* **Capacity:** Supports up to 16 sensors (typically 8 plants with an A and B sensor each).
* **Reliability:** Digital communication via CAN bus ensures data integrity even over longer cable runs and in electrically noisy environments.
* **Addressing:** The A sensor is always used; the B sensor is optional and suggested for larger planters to provide a better average of the soil moisture.
## Capabilities
* **Moisture Sensors:** Supports multiple capacitive or resistive sensors via expansion modules.
* **Moisture Sensors:** Supports multiple capacitive or resistive sensors via CAN bus-based Sensor Modules.
* **Pumps/Valves:** Support for multiple independent watering zones.
* **Power:**
* Solar powered with MPPT
* Battery powered with optional Battery Management (Fuel Gauge)
* Battery powered with optional Battery Management System (BMS)
* Can also be used with a standard power supply (7-24V)
* **Efficient Power:** Use of high-efficiency DC-DC converters for 3.3V and peripherals.