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# Light control module for light control of the "convi" zone of Electrolab
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This project is an open-source control module for the lights in the "convi" zone of the association HQ.
The Electrolab association has a "convi" zone with multiple light sources that need remote control for conferences and presentations, and also for energy saving.
## Description and features
- Discovery STM32F746G evaluation board from ST. It features a touchscreen that will provide the HMI for the light control, as well as Ethernet connectivity.
- Nucleo STM32F207ZG from ST. It features Ethernet connectivity.
- ESP32-POE module from Olimex. It provides Ethernet and Wi-Fi connectivity.
- ESP32-WROOM-32 (or equivalent) module from Olimex. It provides Wi-Fi connectivity.
Only one of these boards can be used at a time, but the footprints for both are provided, in order to give some flexibility for the choice of the main MCU bard.
The target enclosure is a [G373 from Multicomp](http://www.farnell.com/datasheets/1724048.pdf?_ga=2.97583647.1827600163.1585775382-1006352058.1573488393
), compatible with [Gainta G373](http://www.gainta.com/en/g373.html).
The board provides a hardware interface between the 8 PWM outputs of the MCU board, with power supply and 0-10V analog outputs through filtering and voltae scaling.
The 0-10V outputs are individually opto-isolated and provide over-current protection (10mA through HW limitation + polyswitch fuse). The power supply for each isolated part of the output can be taken from the external appliance through the output connector, or provided through individual isolated DC-DC converters. Each output provides a trimmer for fine tuning of the output voltage transfer function.
The board provides a 12V power supply input with fuse, reverse diode protection and basic filtering. This supplies the VIN of the Arduino, MORPHO and ESP-32POE connectors. It also provides a 3.3V power supply for the ESP32 module (not mounted if any other board is used).
The board also provides a [DALI](https://en.wikipedia.org/wiki/Digital_Addressable_Lighting_Interface) interface.
The PCB design is single-board, 2 layers, components on both sides, layout targetted for IPC class 4. Moutong holes are provided for the target enclosures, as well as mounting holes for DIN rail PCB adaptors.
See the corresponding SW repo : [LightControConvi_SW](https://code.electrolab.fr/Flax/lightcontrolconvi_sw)
## Tools
- [Discovery STM32F746G](https://www.st.com/en/evaluation-tools/32f746gdiscovery.html)
- [Nucleo STM32F207ZG](https://www.st.com/en/evaluation-tools/nucleo-f207zg.html)
- [Olimex ESP32-POE](https://www.olimex.com/Products/IoT/ESP32/ESP32-POE/open-source-hardware)
- [Olimex ESP32-WROOM-32](https://www.olimex.com/Products/IoT/ESP32/ESP32-WROOM-32/)