floraLynk mini v1.0 Soil Electrical Conductivity (EC) Calibration

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floraLynk mini v1.0 delivers a practical and easy way to measure air and soil properties simultaneously

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floraLynk mini v1.0 open source hardware device for controlled environment agriculture floraLynk mini v1.0 is a solution to control the environment in a small greenhouse. The hardware and software can be used to control air temperature, humidity, light, soil moisture and electrical conductivity for optimal growing of plants. A unique feature is that the boards have built-in wifi connectivity so they can communicate with an app on your phone or tablet. floraLynk mini v1.0 is a fully open source, ESP32-based controller for the cultivation of plants. It has been specifically designed for both amateur and professional use in mind, with an aim to be as flexible as possible for many different applications. Specification Hardware ESP32 MCU floraLynk mini v1.0 Printed Circuit Board (PCB) Integrated sensors for measurement: Carbon dioxide (CO2) Light (lux) Air Temperature (T) Air Humidity (H) Air Pressure (P) Soil Temperature (ST) Soil Moisture (SM) Soil Electrical Conductivity (EC) Evaluatio...
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floraLynk - open source hardware for controlled environment agriculture

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floraLynk is an open source hardware platform for controlled environment agriculture, the first open hardware project of NIKO Technologies. The floraLynk system is modular and customizable to support a variety of applications including greenhouse farming, aquaponics, hydroponics, vertical farming, indoor gardens and more. Our mission at floraLynk is to support the development of easy-to-use, open source hardware for controlled environment agriculture. We believe that developing a sustainable food system will require both technological and biological solutions. By providing high quality, affordable hardware for farmers around the globe, we hope to make a small contribution to this effort. floraLynk is a project that aims to provide open source hardware devices for both amateur and professional use. The main device is called the 'Controller' which has features ranging from automated watering, power supply control, plant monitoring and via-web control. The aim of the project is...
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floraLynk mini v1.0 Printed Circuit Board (PCB)

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This is the first version of the floraLynk mini v1.0 printed circuit board (PCB). It is a very simple design. The whole thing can be easily made by hand. You can create your own PCBs at home with free tools, or have them produced through inexpensive services. Download pdf file Download Gerber files Show electrical circuit
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floraLynk mini v1.0 Hardware Bill of Materials (BOM)

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Id Designator Package Quantity Designation Installation 1 ESP32 Arduino with WIFI module 1 ESP32-DEVKITC-32D 2 x HEADER DS1023-1X20 2 LS1 Photoresistens 1 PGM5539-MP Direct 3 P1 Digital pressure sensor 1 ВМР180 Direct 4 DHT1 DHT11 – Digital sensor for for temperature and humidity 1 DHT11 Direct 5 CO2 MQ-135 – СО2 sensor 1 MQ-135 Direct 6 SM1 3D printed probe from stainless steel 1 Conn_01x02_Female Stereo jack 3.5mm 7 T1 10kΩ waterproof temperature probe NTC 3950 1 10kΩ Thermistor_NTC Stereo jack  3.5mm 8 R4 Resistance 0.25W 1 5Kohm Direct 9 R3,R2,R1 Resistance 0.25W 3 10Kohm Direct 10 PCB floraLynk mini v1.0 printed circuit board 1 floralynk mini v1.0 PCB Show electrical circuit
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floraLynk mini v1.0 Electrical Circuit

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This is the first version of the electrical circuit for the floraLynk mini v1.0. It shows how the different components are connected, including an ESP32, a DHT11, MQ-135, soil moisture & EC and pressure sensor. Download pdf file Download KiCad project Show Bill of Material (BOM) Show Printed Circuit Board (PCB)
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MQ-135 Gas Sensor

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Carbon dioxide (CO2) is measured with MQ-135 gas sensor. MQ series of gas sensors utilize a small heater inside with an electrochemical sensor. These sensors are sensitive to a range of gasses witch are used at room temperature. MQ-135 is a basic digital/analog, low-cost gas sensor. The module have two output : analog and digital signals, microcontroller/ Arduino can read the sensor output signal and proceed with the data further. The main features are: Good sensitivity of harmful gases with wide range of concentration Long service life, low cost, simple driving circuit. High sensibility over ammonia gas, sulfide, benzene series vapor, also ideal for smoke and other harmful substance detection. Household air pollution alarm ndustrial air pollution controlle Portable air pollution detector Characteristics Signal output: digital/analog Standard circuit: Loop voltage Vc ≤24V  DC Heater voltage: VH 5.0V±0.2V AC or DC Load resistance: Adjustable RL Features of sensitive c...
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floraLynk Licenses

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Unless otherwise specified floraLynk documentation is licensed under following licenses: Documentation Licensing: Attribution-ShareAlike 4.0 International (CC BY-SA 4.0) Software Licensing: GNU General Public License (GPLv3) Hardware Licensing: CERN-OHL-S
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DHT11 Digital Humidity & Temperature Sensor

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Air temperature and numidity is measured with DHT11 sensor. The DHT11 Humidity and Temperature sensor is a basic, low-cost digital temperature and humidity sensor. The main features are: Full range temperature compensated Relative humidity and temperaturemeasurement Calibrated digital signal Outstanding long-term stability Extra components not needed Long transmission distance Low power consumption 4 pins packaged and fully interchangeable Characteristics Supply voltage: 3,3V ÷ 5V DC Temperature range: 0 ÷ +50 °C Temperature accuracy: ± 2 °C Humidity range: 20 ÷ 90% RH Humidity accuracy: ± 5% Additional information and support materials: Download data sheet This tutorial will show you how to use DHT11 with Arduino Humidity and temperature sensors are used in all kinds of different applications. To name a few; they are used to prevent mold, detect freezing pipes, monitor fermentation processes, assess growing conditions for crops and even track the health of livestock. All these tas...
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