README.md

Wireless 433mhz PIR sensor for attiny45

This code is based on the work from Sweetpi and with the help from Mercuri0

https://github.com/sweetpi

!!!!!!!!!!!!!THIS PROJECT IS FOR TESTING PURPOSES!!!!!!!!!!!!!!!!

This is a wireless passive infrared sensor for the raspberry build with an attiny45. It will send a 433 mhz (custom) signal when movement is detected. You can use i.e. pilight (http://www.pilight.org) to perform the nessasarry action when a signal is send. WARNING: this could potentionally damage your raspberry pi and also other hardware. I take no responsability for any damages! Try at your own risk!

1. Install avrgcc:

---

sudo apt-get install gcc-avr avr-libc

2. Install modified avrdude:

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wget http://project-downloads.drogon.net/files/avrdude_5.10-4_armhf.deb
wget http://project-downloads.drogon.net/files/avrdude-doc_5.10-4_all.deb
sudo dpkg -i avrdude_5.10-4_armhf.deb
sudo dpkg -i avrdude-doc_5.10-4_all.deb

3. Compile and program attiny:

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make all
make program

Additional info:

###Calculate fuses: http://www.engbedded.com/fusecalc/

###Pinout:

Down below a schematic how I use my attiny45, PIR Sensor and 433mhz sender. ![Pinout attiny 45] (docs/attiny45_85pinout.png "Pinout attiny 45")

Name	Raspberry Pi V2	Attiny45	433 Sender	PIR Sensor
MOSI	19	5	-	-
MISO	21	6	-	-
SCK	23	7	-	-
RESET	24	1	-	-
TRANS_PIN	-	3	DATA	-
INPUT_PIN	-	4	-	DATA

to change the pins create an .avrduderc file in your home directory containing (the numbering is wiringpi numbering!):

programmer
	id    = "gpio";
	desc  = "Use sysfs interface to bitbang GPIO lines";
	type  = gpio;
	reset = 8;
	sck   = 11;
	mosi  = 10;
	miso  = 9;
;