90 lines
2.1 KiB
Markdown
90 lines
2.1 KiB
Markdown
# Indoor Air Quality sensor (wired version)
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This repository contains all CAD files needed for making a Veles IAQ01 wired sensor:
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* Hardware: KiCAD project (schematic, PCB and exported Gerbers)
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* Firmware: STM32 IDE project
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* Enclosure: FreeCAD project
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This sensor which is part of wider family of Veles Smart Household sensors.
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## Basic properties
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### Measured values
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* Carbon dioxide
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* Temperature
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* Relative humidity
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* Volatile Organic Compounds (VOC)
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### Connectivity
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* RS-485 with Modbus
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### Power requirements
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* Input voltage: 5 - 30 V DC
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## Veles Smart Household
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Goal of this project is to create FOSS hardware and software platform for measuring various quantities, not only related to indoor air quality:
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* temperature
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* humidity
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* atmospheric pressure
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* carbon dioxide (CO2)
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* carbon monoxide (CO)
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* volatile organic compounds (VOC)
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* particulate matter (PM - dust particles)
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* light intensity
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* soil moisture
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... and some more!
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Sensors are connected either via RS-485 Modbus or wirelessly to central unit. Wireless sensors are currently in development. Central unit may be any anything that can read from the bus: any computer with RS-485 to USB converter (e.g. Raspberry Pi) or an actual PLC. Readout of the sensor is possible via Modbus: either using your own favourite application or using your Python package.
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**We want this to be community effort! Come help us make something great!**
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### Other Smart Household repositories
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WIP
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## MODBUS Registers
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### Input Registers
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|Value|Register|
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|CO2 | 30010|
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|SHT4x | 30011|
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|RH SHT4x | 30012|
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|T SCD4x | 30013|
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|RH SCD4x | 30014|
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|T SHT4x SIGNED | 30015|
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|T SCD4x SIGNED | 30016|
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### Holding Registers
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|Value|Register|
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|LED ON | 40001|
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|LED BRIGHTNESS | 40002|
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|LED SMOOTH | 40003|
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|CO2 ALERT LIMIT1 | 40004|
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|CO2 ALERT LIMIT2 | 40005|
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|SCD4x T OFFSET | 40006|
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|MODBUS ADDR | 40007|
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### Device Information Registers
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|Value|Register|
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|VENDOR NAME | 30010|
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|PRODUCT CODE | 30011|
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|REVISION | 30012|
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|PRODUCT NAME | 30013|
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|SERIAL NUMBER | 30014|
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