Introduction: Car / Motorcycle or Bicycle Wireless 2.4ghz Alarm Range 500m 10$ Budget

this is easy and inexpensive wireless alarm with 200m range if module is insert inside car or >500m if module is outside

two modules: RX and TX

receiver module make sound alarm and led blink when detect signal

transmit module is connect to any device or switch to turn it on

Hardware is arduino attiny85 and nrf24l01, very inexpensive!

In attached files to be printed in 3d for RX and TX case

PCB module is editable with fritzing

http://fritzing.org/home/

you can make this single face PCB with cnc or transfer method

http://fritzing.org/projects/car-motorcycle-o-bicy...

attiny85 is easy to program with arduino nano or uno with this guide

RX/TX modules are powered with 9v battery but you can use any DC power with 5v to 20v voltage without problem.

For car alarm i suggest to use car inside lights to be activated with the opening of the doors.

example

this module can send code of alarm so it can be used as alarm for the house by inserting it in the doors, windows or putting in series with sensors (gas, fire, infrared)

Comments

author
gada888 (author)2015-05-12

I'm puzzled there are 2 ino files,one for receiver,another for transmitter.so do i need to program two attiny chips or burn these two files in one chip.

author
c128 (author)gada8882015-05-12

receiver 1 x attiny85 with receiver program and 1 x nrf24l01

transmitter 1 x attiny85 with transmitter program and 1 x nrf24l01


author
michel5002 (author)c1282015-10-08

Hello, I can not operate the receiver with an ATtiny84. I put a LED on pin 13 (D10) but not blinking.
Thank you...

author
marceltrapman (author)2015-05-05

Hi, looks nice.

However, not that I am an expert or that it changes much to your project, but what has the 'nrf24l01' to do with WiFi?

author
c128 (author)marceltrapman2015-05-05

nrf24l01 use same frequecy 2.4ghz

author
Fogl (author)c1282015-05-14

Unfortunately, that does not make it WiFi. Bluetooth also operates on 2.4GHz.

Wireless yes. WiFi no.

author
c128 (author)Fogl2015-05-19

yes nrf24l01 use same frequency but not support 802.11 standard then not properly wifi standard

is only generic indication but this module can create your own network with tcp protocol

https://github.com/TMRh20/RF24Network

author
marceltrapman (author)c1282015-05-19

You really need to change your description.

It is not at all WiFi, it is NRF24.

When you look at the poster above he is also confused and your reply is even more confusing (you mention a WiFi module where it is a NRF24 module).

As mentioned, I like the project but the description is just wrong...

author
c128 (author)marceltrapman2015-05-19

ok

author
mhaqq (author)2015-05-04

hi, that is an interesting project but i can't seem to see which part is wifi related?

author
c128 (author)mhaqq2015-05-04

rx board and tx board is equal, only program is different

you can see in this photo in the left wifi module and in the right board with attiny TX module without mosfet driver

https://cdn.instructables.com/FVU/BI8S/I95GXCL6/FVU...

author
komatz (author)c1282015-05-19

think you need to show more steps so that it's more understandable. good in theory but lack of procedure.

author
c128 (author)komatz2015-05-19

i make this projects in my free time and English not is my native language

if you or other people make this project you can develop complete detailed guide with the link of the inventor

author
seamster (author)2015-05-03

This looks like a great idea. Very nicely done!