TINYCONTROL LAN controller with relay v3.9

Tinycontrol LAN controller v3.9

LAN controller with relay is a simple, universal and affordable device for controlling outputs based on information from various sensors. It serves as a web server that displays various types of sensors, and allows remote control of outputs. In addition, it is possible to program events and appropriate actions to meet conditions on any of the sensors. A scheduler that allows turning the device on/off at a certain time or for a certain period of time may be suitable for many applications. There are 4 PWM outputs for controlling lighting or an electric motor.

LK3.9 is a continuation of the v3.5\ series. It has the same API and is recommended for typical monitoring and automation applications in an IT environment. This version is equipped with a faster ARM 32F407 processor. It offers the same functions, but uses a different firmware series than version v3.5. The device is equipped with a built-in web server (like all LK versions) for viewing measured values ​​and configuring settings via a web browser.

Communication interface

You can use a wired Ethernet connection or a wireless Wi-Fi 2.4 GHz (802.11n) connection. The LAN controller can be fully configured from a web page available on the built-in web server. It is also possible to send arbitrary commands to the device via HTTP (bypassing the web page) or MQTT (after configuring the connection).

Basic features

• 2 analog inputs with switchable gain - Measurement of voltage from 1 mV to 33 V, DC, AC (additional sensors), thermocouples, distance sensors, photoresistors for measuring light and many more.
• 2 analog inputs with switchable gain - Measurement of voltage from 1 mV to 55 V, DC, AC (additional sensors), pressure sensors, thermocouples, distance sensors, photoresistors for measuring light and many more.
• 2 analog inputs up to 3.3 V - for measuring voltage and current (DC and AC using additional sensors) and 4-20 mA converters
• I2C bus for connecting sensors via RJ-12 connector: supports a wide range of I2C and DS18B20 sensors via 1-Wire bus.
• 4 logic inputs - such as status sensors for door monitoring, infrared motion sensors, manual switching buttons with the option of bistable mode, pulse counters for energy meters and timers for resetting inputs.
• 1 relay (NC, NO, C)
• 1 transistor output, provides power supply voltage at the output, to control devices with current consumption up to 0.5 A
• 4 transistor (OC) outputs for switching relays
• 4 PWM outputs (50 Hz to 100 kHz)
• UART interface for communication with external devices via serial port
• Bus for RS485 converter - MODBUS RTU (additional board required): allows reading pre-configured devices and setting the configuration to read any device using the Modbus protocol.
• Temperature and power supply voltage measurement on the board
• Ethernet communication (10/100Mb) with PoE 802.3af support.
• Management via web interface.

Examples of use

• Automatic heating control when the temperature drops or rises beyond the set limit.
• Automated control of lights or devices based on a schedule or remote commands.
• Monitoring/control of solar power plants - Monitoring the performance of solar panels, wind turbines, basic battery charging control, measuring DC consumption, measuring AC energy consumption and inverter production.
• Agriculture - Cyclic regulation of feeders and other equipment in animal husbandry, irrigation systems.
• Monitoring the voltage of batteries, power supplies and power outages from the network.
• ISP watchdog for monitoring Ethernet network connections and resetting devices.
• Sending input states and environmental parameters overlaid on the image of an IP camera (e.g. Dahua).
• Monitoring the operation of heat pumps with data presentation on Internet graphs.
• Monitoring the supply voltage and automatic switching to backup sources.
• Remote monitoring of energy consumption via Modbus meters or pulse inputs.
• Network (wired or wireless) transmission of commands between multiple LK devices.

Power supply voltage: DC 8-55 V

Power consumption: 0.5 W

PoE

• yes
• 802.3af in mode A; passive mode B with jumper

Interfaces

• Ethernet 10/100 Mb/s
• Wi-Fi 2.4 GHz 802.11n
• RS-485 Modbus RTU

Power output for Modbus devices: 12 V/ 200 mA

Operating temperature: -20 to +85 °C

Dimensions: 79 × 66 × 40 mm

Weight: 90 g

Overview of currently supported sensors and devices

Analog inputs

• AC voltage: AC-meter
• AC current: SCT013-000, SCT-013-03
• DC current: ACS711EX_15, ACS711EX_30, ACS709_75, ACS711LC_12, ACS711LC_25, ACS711LC20, WCS1800
• Temperature sensor: PT1000 (with additional resistor)
• Flood sensor (water)

Logic inputs

• Magnetic door sensor
• Energy meter with pulse outputs
• Rain sensor with pulse outputs

1Wire bus

• Temperature sensor DS18B20

I2C bus

• Humidity sensors: BME280, AM2320,