Hobby Components SmartRFy HCMODU0141 Manuel utilisateur

SmartRFy Sensor Module

Manual

HCMODU0141

Revision 1.1.0

DISCLAIMER

SmartRFy modules are micro power short range devices (SRD) using the 433MHz frequency band.

This frequency band is licensed exempt (within certain restrictions) in many countries including

the UK, Europe, Asia, and the US. It is the end users responsibility to ensure that it is legal to

operate devices in this frequency band within your own country before use.

As with all wireless devices, external factors such as range and interference may cause transmissions to

be corrupted or blocked. Therefore these devices should not be used in applications where control or

monitoring is a critical requirement.

This document is provided "as is". Hobby Components Ltd makes no warranties, whether express,

implied or statutory, including, but not limited to, implied warranties of merchantability and fitness for a

particular purpose, accuracy or lack of negligence. Hobby components Ltd shall not, in any

circumstances, be liable for any damages, including, but not limited to, special, incidental or consequential

damages for any reason whatsoever.

This manual, including content and artwork is copyright of Hobby Components Ltd and may not be

reproduced without written permission. If you paid for or received a copy of this manual from a source

other than Hobby Components Ltd, please contact us at [email protected]

Table of Contents 
 
SmartRFy system overview 4 
SmartRFy sensor module 7 
Features 8 
Specification 9 
Sensor Module Features 10 
Power 10 
DHT22 Temperature / Humidity sensor 10 
PIR 11 
LDR 12 
Auxiliary switch output 12 
LEDs 13 
Serial UART 14 
Command interface feature 14 
Wireless serial port feature 14 
Default configuration settings 15 
Clear (Factory Reset) 15 
SmartRFy commands 16 
Command formats 16 
Command format requirements 16 
Local command format 17 
SmartRFy generic commands – quick lookup table 18 
Sensor module specific commands – quick lookup table 19 
Generic SmartRFy commands 20 
Firmware version (FWV?) 20 
Get the modules zone (ZON?) 21 
Get the modules address (ADD?) 21 
Serial serial timeout time (STO=) 21 
Set the baud rate (BUR=) 21 
Set number of transmit resends (TRS=) 22 
Set the serial verbose mode (VBM=) 23 
Set the modules zone number (ZON=) 23 
Set the modules address (ADD=) 24 
Turn on/off repeater mode (TRP=) 24 
Factory reset (FTRE) 25 
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© Hobby Components Ltd 

SmartRFy sensor module commands 26 
Get Humidity (HUM?) 26 
Humidity transmit time (HTT=) 26 
Humidity transmit name (HTN=) 27 
Get Temperature (TMP?) 27 
Temperature transmit time (TTT=) 27 
Temperature transmit name (TTN=) 28 
LDR transmit time (LTT=) 28 
LDR transmit name (LTN=) 29 
PIR transmit name (PTN=) 29 
Set the state of the digital output pin (SW0=) 29 
Set an alternative name for the digital output pin (SWN=) 30 
Set the output pin high time (SWO=) 30 
Set the threshold value to set the output pin high (STH=) 31 
Set the threshold value to set a digital pin low (STL=) 31 
Set the test condition for setting the output pin high (SMH=) 32 
Set the test condition for setting the output pin low (SML=) 33 
Appendix A: Example auxiliary output pin modes 34 
Default trigger mode 34 
Timer mode 35 
Threshold mode 35 
 
 
 
 
 
  
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© Hobby Components Ltd 

SmartRFy system overview

SmartRFy modules are a range of wireless modules that provide a simple low cost way of

controlling and monitoring remote devices and sensors. They are designed to work at their

basic level with no programming required. However, when reconfigured or controlled via

their serial interface they can also provide more complex and even autonomous functions.

SmartRFy modules work by wirelessly communicating with one another using simple text

based commands - for example, to turn on a remote relay a command such as RLY=1 can

be sent, and to turn it back off RLY=0. These commands can be automatically sent from

one module to another or can be sent by a user via a modules serial interface to manually

control modules on the SmartRFy network.

They are addressable and can be grouped into one of 255 zones, with each zone capable

of individually addressing 255 devices, giving a total of over 65,000 unique addresses.

SmartRFy modules are designed to be both easy and flexible to use by providing three

levels of control:

Zero configuration (out-of-the-box)

With no configuration at all the SmartRFy range of modules allow basic functionality such

as remotely switching relays, digital pins, or monitoring sensors, such as temperature,

humidity, light, motion etc. All SmartRFy modules default to the same zone and address

and so can respond to, or control, other modules without the need to modify any zone or

address settings.

Serial port configuration

Example: Remote 1CH relay module configured to turn on light when local modules PIR is

triggered and second remote relay module is configured to control a heating device based

on local modules temperature sensor readings.

All smartRFy modules include a serial port which allows them to be re-configured using

simple text based commands. These text commands allow changing of configuration

settings and control of specific features of each module. Any setting changes are stored by

the module's non-volatile memory and so are retained even when power is removed from

the module. When reconfigured they are able to perform more complex functions and even

some basic autonomous tasks. For example, a SmartRFy relay module can be

reconfigured to control a heating system based on the temperature transmitted from a

remote sensor or, turn on a flood light for a set amount of time when triggered by a remote

PIR – all without any additional hardware. Serial port configuration also allows a modules

zone and address (all SmartRFy modules default to zone and address 0) to be changed.

This provides the option for modules to be placed into groups, which will then only respond

to other modules with a matching zone or address.

Slave controlled

Example 1: Turning on a remote relay with zone =1 and address = 5

Example 2: Send plain serial text “Hello” to a remote microcontroller

SmartRFy modules can also be controlled via their serial port by other devices such as

microcontrollers or computer based automation software such as Node-RED. Using a

SmartRFy module as a slave device (must be capable of transmitting/receiving) gives a

master device the ability to monitor and control any other SmartRFy devices on the

network regardless of their zone and address. SmartRFy modules can even be used as a

passive wireless serial port for passing non-SmartRFy data to other remotely connected

devices.

SmartRFy sensor module

The SmartRFy sensor module adds the option to remotely monitor various sensors via a

SmartRFy network connection. The sensor module includes a temperature and humidity

sensor (DHT22) and has the ability to measure ambient light levels via an integrated

photo-resistor. Out of the box the module will automatically transmit readings from these

sensors once every 60 seconds (when reconfigured via the module serial port this can be

changed from 10 to 65535 seconds) which can then be received by other SmartRFy

devices with receive capability. For example remote sensor readings can be read directly

into a computer via a SmartRFy USB module, or a SmartRFy relay module can be

configured to trigger depending on sensor values transmitted from a remote sensor

module.

The sensor module also includes a header for interfacing common types of 5V PIR motion

detectors (see SKU: HCMODU0003). By default the sensor module will transmit the state

of a connected PIR whenever its state changes. This transmitted state may then be used

by any suitably configured remote SmartRFy module capable of receiving its data.

Additionally, the sensor module includes an auxiliary digital output (labelled SW). This pin

can be reconfigured via the sensor module's serial interface to automatically trigger based

on max and min values of one of the module's sensors.

Features

● Local and remote control via simple text based serial commands.

● Up to 255 zones and 255 addresses (default zone 0, address 0).

● Basic automation features (requires a USB to serial adaptor or microcontroller for

configuration).

● Compatible with most microcontrollers featuring a serial UART interface.

● Wireless serial communication with 8 different baud rates (9600 default).

● Built-in temperature and humidity sensor (DHT22).

● Built-in light sensor (photoresistor).

● Automatically read and transmit temperature, humidity, and light levels (will transmit

readings once every 60 seconds by default).

● Can automatically transmit state changes from a connected PIR sensor.

● Auxiliary digital output can be programmed to automatically trigger based on

readings from any of the connected sensors and supports on/off, toggle, and timer

modes.

Specification

Model number:

HCMODU0141

Supply Voltage:

4.5 to 5.5V

Supply current min:

9.5 mA (idle)

Supply current max:

21 mA (transmit)

Operating frequency:

433MHz (OOK)

Operating range:

30 Meters (unobstructed)

Temperature sensor range:

-40 to 80 oC

Temperature sensor resolution:

0.1oC

Humidity sensor range:

0 to 10 %RH

Humidity sensor resolution:

0.1 %RH

LDR sensor range

0 to 255

PIR input (S) pin characteristics

Input logic low voltage: -0.3V to Vdd x 0.3V

Input high voltage Vdd x 0.7 to Vdd + 0.3V

Aux digital output (SW0):

Open collector with 10K pullup. 100mA max sink

current

Interfaces:

RF Tx, serial UART, PIR, and relay Aux digital output

Module dimensions (WxDxH):

44.2 x 36.6 x 20mm

All measurements taken at Vdd=5V, 25

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