Smartify a simple heater

I needed to make a controller for my cheap and simple heater. It don't have any termostat and the setting are really strange and I could not find the correct settings, either too hot or too cold. I connected a 433 sender to a raspberry pi and made a flask web API. I then added a switch in Home Assistant that run a curl command to the other pi.

Hardware

Parts

• 5Pcs 433Mhz RF transmitter and receiver link kit for Arduino/ARM/MCU WL
• Raspberry Pi kit
• 120Pcs Male Female Dupont wire cables jumpers 10/20/30cm
• 3pack nexa switches(Norwegian link)

Wiring

• VCC -> pin 1 3,3Volt
• Gnd -> pin 6 Gnd
• Date/Data/signdal -> GPIO 17 (pin11)

Software

	piHomeEasy
	cd ~
	sudo apt-get install git-core
	git clone git://git.drogon.net/wiringPi
	cd wiringPi
	sudo ./build
	git clone git://github.com/nbogojevic/piHomeEasy.git
	make
	sudo make install
	sudo apt-get install python-flask

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Flask code

	from flask import Flask, url_for
	import os
	app = Flask(__name__)
	@app.route('/')
	def api_root():
	return 'Nexa gateway'
	@app.route('/on/<deviceid>/<receiverid>')
	def api_nexadeviceon(deviceid,receiverid):
	cmd = 'sudo piHomeEasy 0 '+ deviceid + ' ' + receiverid + ' on'
	os.system(cmd)
	return 'turning device ' + deviceid + ' on.'
	@app.route('/off/<deviceid>/<receiverid>')
	def api_nexadeviceoff(deviceid,receiverid):
	cmd = 'sudo piHomeEasy 0 '+ deviceid + ' ' + receiverid + ' off'
	os.system(cmd)
	return 'turning device ' + deviceid + ' off.'
	if __name__ == '__main__':
	app.run(debug=True, host='0.0.0.0')

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Homeassistant

	switch:
	platform: command_line
	switches:
	officeheater:
	command_on: 'curl http://<<ip>>:5000/on/1509/5'
	command_off: 'curl http://<<ip>>:5000/off/1509/5'

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Referances

• https://github.com/nbogojevic/piHomeEasy
• https://kjetiliot.blogspot.no/2016/05/running-looping-python-automatically.html