Sunrom RF Serial User manual

RFSerialDataLink
UART-2.4GHz Sunrom Part#
1418
Easilytransfer serialdata over 2.4G
H
zRFwith thesereliableRF
modem.Enablestransparent bi-directionalcommunication for
microcontroller &computer for wireless dataloggingandsensor
reading.
User's
Manual
DocVersion
:
1
22-Mar-16
A
q
uality product
,
proudly madein India by
Electronics
http://www.sunrom.com/m/1418

1418 RFSerial DataLinkUART- 2.4GHz
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Table of Contents
Introduction.................................................................................................................................... 3
Typical Application......................................................................................................................... 3
Features.......................................................................................................................................... 3
Applications.................................................................................................................................... 4
InterfacingwithMicrocontrollerorUSB-UARTTTL..................................................................... 4
Specifications.................................................................................................................................. 5
Module PinDetails.......................................................................................................................... 5
Board Schematic............................................................................................................................. 6
Top SideComponentLayout...........................................................................................................7
JumperSettings..............................................................................................................................8
Frequency Channel .....................................................................................................................8
BaudRateSetting........................................................................................................................8
Product Dimensions....................................................................................................................... 9
Support..........................................................................................................................................10
Disclaimer......................................................................................................................................10

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Introduction
ThisisaRFdatamodemworkingat2.4 GHzfrequency inhalfduplex modewithautomatic
switchingofreceive/transmitmodewithLED indication.ReceivesandTransmits serial dataof
adjustable baudrateof9600/115200 bpsat5Vor 3Vlevel for directinterfacingto
microcontrollers.
RFmodemcan beusedfor applicationsthatneedtwo way wireless datatransmission.It
featureshighdatarateandlongertransmissiondistance.Thecommunicationprotocol isself
controlledandcompletely transparentto userinterface.Themodule can beembeddedtoyour
currentdesignsothatwireless communicationcanbesetupeasily.
TypicalApplication
Features
•Automaticswitchingbetween andtransmitandreceivemodeinRF
•Bidirectional UARTserial datatransfer
•Easy to use,Worksoutoftheboxwithoutany configuration
•Transparentto microcontroller,No special programmingorconfigurationrequired.
•Reliable andSturdy operation
•FSKtechnology,halfduplex mode,robusttointerference.
•2.4 GHz band,noneedtoapply frequency usagelicense.
•Highsensitivity,reliable transmissionrange.
•Builtindual color LED indicationforTransmitandReceive
•On Board voltageregulator whichaccepts3.3Vto 5Voperatingvoltage
•StandardUARTinterface,TTL(3-5V)logiclevel.
•No tuningrequired,PLLbasedselftuned.
•Error checking(CRC)ofdatainbuilt.
•Stable,small size,easiermounting.
•BuiltinUARTLevel convertor for 5Vor 3.3Vmicrocontrollers.
•On board jumpertoselect 9600 or 115200 baudrate
•On board frequency channel selectionjumperto modify channel ofoperation,toavoid
clashingoffrequency for multiple pairs insamepremises.

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Applications
•SensorNetworks/Datacollection
•Wireless metering
•Accesscontrol /Identitydiscrimination
•IT homeappliance
•Smart houseproducts /Security Systems
•Remotecontrol /Remotemeasurementsystem
•Weatherstations
Interfacingwith MicrocontrollerorUSB-UARTTTL
If youwantto operatewithmicrocontrollerthen it's verysimple to connectjust 4pinsof
moduleslike below.
If youwantto operatewithaPC then useatypicalUSB-UARTofTTLlevel(not RS232)with
sameconnectionslike below.
RFSerial Modem
Microcontroller
USB-UARTTTL
GND
R
X
T
XD
R
XD
TX
+3/5
V
GND
+3/5
V

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Specifications
Parameter
Value
WorkingVoltage
3.3Vto5VDCregulatedpowersupply
CurrentConsumption
25mA
Frequency ofOperation
2.4 GHz
Serial Baudrate
9600 bpsor 1
1
5200 bpsdependingonjumpersetting
Baudrateformat
8
-
N
-
1;1Start bit,8Databits,1Stop B
its,NoParity
RF
Bitrate
250kbps
RFPowerOutput
0dbm
RFrange
50
-
70meters
On Board controller
STM8S003F3
RFChipset
nRF24L01+Enhancedversion
Module PinDetails
Pin
Details
GND
CommonGround
+3
.3
V
/5
V
Regulatedpositivepowerinput3.3Vto5V
DC
TX
TransmitOutput
-
UARTTTLlevel
-
Connects toRXDpinofmicrocontroller
RX
ReceiveInput
-
UARTTTLlevel
-
Connects toTXDpinofmicrocontroller

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Board Schematic
Title
Code Rev
Date: Sheet of
1418 1
RFSerialModem -nRF24L01+
SunromElectronicshttp://www.sunrom.com
1 1Tuesday, March22, 2016
U1
STM8S003F3
PD4 1
PD5/TX 2
PD6/RX 3
NRST
4
PA1 5
PA2 6
VSS
7
VCAP
8
VDD
9
PA3 10
I2C_SDA/PB5 11
I2C_SCL/PB4 12
PC3 13
PC4 14
SPI_SCK/PC5 15
SPI_MOSI/PC6 16
SPI_MISO/PC7 17
SWIM
18
PD2 19
PD3 20
C3
1uF1206
R1
10K
C2
100n
VCC
NRST
CN3
SWIM
3V3 1
SWIM 2
GND 3
NRST 4NRST
VCC
C1
100n
VCC CN2
nRF24L01+
GND
1
3V3
2
CE
3
CSN
4
SCK
5
MOSI
6
MISO
7
IRQ
8
RX
TX
VCC
CE
CSN
SCK
MOSI
MISO
MISO
MOSI
SCK
CE
CSN IRQ
IRQ
D2
RED-LED D3 GRN-LED
VCC
TLED RLED
R3
1K
VCC
R4
1K
TLED
RLED
-
+
CN4
SIP4
1
2
3
4
INOUT
GND
U2
662K 32
1
R5
100R
R2
10K
VCC
D1
1N4148
RX RXD
TXDTX
C4
1uF1206 C5 1uF1206
VDD
VDDVCC
J1
J2
J3
JF2
JF1
JB
JB
JF1
JF2

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Top SideComponent Layout

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JumperSettings
Frequency Channel
Therearetwojumperstosetfrequency
channel ofoperation.If youwanttooperate
multiple pairs onsamepremiseswithout
interferingwitheachotheryoucan setthis
frequency channel selectionjumper.
Defaultweprovideitbothopen.Seta
uniquecombinationfor thejumperlike one
short andone open orbothshort onpair
youwishtooperate.Changingthissetting
will deviatethefrequency +/-1Mhzof
operationfromthedefaultandonly
moduleshavingsamejumpersettingwill be
able to communicate.
Baud RateSetting
ThereisaPCB jumperonboardonbottom
sideofPCB.Weprovideditopen condition
whichmeans9600 bpsbaudrate.Youcan
short itwithasolderingiron,if youwant
115200 bpsbaudratefor module.

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Product Dimensions
Board Dimensionsinmm

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Support
SunromElectronicsoffers freetechnicalsupport(www.sunrom.com/contact) for
customers,until theendoftheproduct’slifetime,so if somethinggoeswrong,we’reready and
willingto help!
Technical Support isavailable by email only andscopeislimitedto problemfacedduringuseof
theuseofproduct anddoesnot coverenduserprogrammingandhardwaretroubleshooting.
Eachproductpassesthroughstrict quality checksbeforeitreachesyou. So if somethingisnot
workingoutright,thefirst thingtodoubtistheconnectionsorprogrammingofyourhardware.
Disclaimer
SunromElectronicsassumesnoresponsibility or liability for any errors or inaccuraciesthatmay
appearinthepresentdocument.Specificationandinformationcontainedinthepresent
schematicaresubjectto changeatany timewithoutnotice.
Copyright©2016SunromElectronics.All rightsreserved.