315Mhz RF Remote Transmitter – Arduino Compatible


This is a two-channel RF Transmitter unit that consists of, Atmega328 microcontroller, 2 Tactile switches with pull-down resistors, a programming port, and a 315Mhz RF transmitter module. It is an Arduino compatible open-source project that can be used for many RF transmitter applications. It is advisable to use 1 Foot hook-up wire as Antenna to enjoy a maximum range of the transmitter.

Arduino Pins: D3, D4 Tactile Switch and D12 data out for AM transmitter

Note1: The PCB is compatible with 2 types of RF modules, 3-Pins or 4-Pins. Use a suitable connector as per module.

Note2: This project is compatible with our 1 channel RF relay board. The Arduino code is available as a download for the transmitter.

Features

  • Supply 5V DC @ 20mA
  • 2 Tactile Switches with Pulldown Resistors
  • PCB Dimensions 52.71 x 28.26mm

Applications

RF Remote ON/OFF AC or DC loads like, Fans, Lights, Home Appliances, Door control. This transmitter is compatible with 315Mhz RF Remote Receiver with On-Board Relay.

Arduino Code

Arduino Code is provided as a download The code works with single SW1, it toggles the Receiver Relay when the switch is pressed. A new Atmega328 chip requires Bootloader and Arduino firmware programming. Please, check the link below to learn more about programming the new Atmega328. Transmitter PCB has an onboard programming port.

https://www.arduino.cc/en/Tutorial/BuiltInExamples/ArduinoToBreadboard

FS1000A Receiver Module Specs

  • Transmitter Model: FS1000A
  • Transmitting Frequency: 433.92MHz, 315MHz, 330MHz
  • Operating Voltage: 3V to 12V
  • Transmitting Power: 10mW to 40mW 16dBm
  • Transmitting Range: 20 to 100 meters through walls & 500 meters max in open area
  • Data Transfer Rate: <10 Kilo Bytes Per Second (Range drops above 2400 bytes per second)
  • Modulation Type: OOK
  • Current Consumption: 20 to 28mA
  • Current Consumption in Standby: 0mA

more information: https://www.componentsinfo.com/fs1000a-433mhz-rf-transmitter-xy-mk-5v-receiver-module-explanation-pinout/

Schematic

Parts List

NO. QNTY. REF. DESC. MANUFACTURER SUPPLIER SUPPLIER PART NO
1 1 CN1 8 PIN MALE HEADER PITCH 2.54MM WURTH DIGIKEY 732-5321-ND
2 1 CN2 2 PIN MALE HEADER PITCH 2.54MM WURTH DIGIKEY 732-5315-ND
3 1 C1 10uF/16V SMD 1206 OR 1210 MURATA/YAGEO DIGIKEY
4 2 C2,C3 0.1uF/50V SMD SIZE 0805 MURATA/YAGEO DIGIKEY
5 2 C4,C5 22PF/50V SMD SIZE 0805 MURATA/YAGEO DIGIKEY
6 1 D1 LED SMD SIZE 0805 OSRAM DIGIKEY 475-1278-1-ND
7 1 E1 ANTENNA 1 FEET HOOKUP WIRE
8 2 M1,M2 RF AM TX MODULE ALIEXPRESS ALIEXPRESS FS1000A ALIEXPRESS
9 3 R1,R2,R3 10K 5% SMD SIZE 0805 MURATA/YAGEO DIGIKEY
10 1 R4 1K 5% SMD SIZE 0805 MURATA/YAGEO DIGIKEY
11 1 R5 1M 5% SMD SIZE 0805 MURATA/YAGEO DIGIKEY
12 2 SW1,SW2 TACTILE SWITCH C&K DIGIKEY CKN9085CT-ND
13 1 U1 ATMEGA328TQPF-32 MICROCHIP DIGIKEY ATMEGA328PB-AURCT-ND
14 1 X1 16Mhz ECS INC DIGIKEY X1103-ND

Connections

Gerber View

Photos

 

Video

Atmega328 Datasheet

gravitech_atmega328_datasheet



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