/BitsPerComponent 8 More light reflects when the mirror passes in front of the laser. Side note: if you're interested in learning how I structure my YAML files for ESPHome, check out this post. Fitting a smart switch and a relay in the small box and keeping the mains voltage lines clearly apart from the lines that control the fireplace seems difficult. So, with the recent energy price rises, I figured now was a good time to give the Shelly EM a go. /SA true Go ahead and check for a firmware upgrade and apply if its available (Settings->Firmware Update). The theory says we should do the former, but now I can test this in the real world. /BitsPerComponent 8 Select the correct Shelly energy channel and the entity that is providing the price: We can now progress through the wizard. But how accurate are these numbers? Disconnect the two wires that were previously connected to the wall switch. I could also use it to see how efficient my gas burner is. The Shelly EM uses a current clamp (sold separately) to monitor the energy used by a given power feed. I'm a morning person, and I usually get up quite early. All needed voltage comes from the thermocouple and/or thermopile. Note: Olimex has multiple versions of this board. 6) 7 Things You Need To Know When You Cut The Cord, I No Longer Need The Perfect Remote Control. I do have an outlet there, but it is NOT easily accessible. This isnt a big issue for me because Ive taken some steps to minimize the effects of power and other outages in my home. See Contributing. Home Assistant,my favorite automation controller, can integrate with the Shelly powered switch via MQTT. This website uses cookies to improve your experience. Because the built-in version only supports digital inputs, not analog ones. /Title ( S h e l l y G A S W i F i C o m b u s t i b l e G a s S e n s o r U s e r G u i d e - M a n u a l s +) Out of these, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. But opting out of some of these cookies may affect your browsing experience. If you dont have a wall switch/thermostat you probably have an RF remote. Note the 6 character string following shelly- in the will topic. /AIS false For the new sensor to start appearing in Home Assistant, Template Entities will need to be reloaded. Instead, I decided to build one myself. So for the time being, I will retrofit my analog meter. This definitely means I dont want cloud access. I'm not going to add any other devices at this stage so I am goign to skip through the next 4 screens by pressing Next. I just want you to be careful. No spam ever! Sometimes when I restart Home Assistant it takes a bit for the Shelly to become available because it doesnt seem to retain the value of the will topic. Lets go over whats needed and some key information to install the Shelly 1 the way I did before I go through the steps I used. As always, it was automatically discovered, and all I had to do was give Home Assistant the API password. You can fix this by removing the availability_topic, making the Shelly switch appear as always available. After the restoring power, the Shelly will boot up and broadcast a WiFi network (e.g. After setting up the broker you need to configure MQTT on the Shelly 1 relay. Installing the Shelly 1 as a smart fireplace switch, Step 1: Understanding the installation wiring, Advanced: Integration with Home Assistant via MQTT, Configuring the MQTT switch in Home Assistant, Safeguards for your smart fireplace switch, Remotec Z-Wave Dry Contact Fixture Module, explained what MQTT is, how it works, and how to set it up in Home Assistant, minimize the effects of power and other outages in my home, The Best Choices For Home Assistant Hardware, 11 Great Choices for pfSense Hardware (Updated for 2022), Updating My Home Lab: Proxmox, pfSense, and More, Tips for Building a New Construction Smarthome, Creating a Smart Fireplace Switch With A Shelly Relay, Using a Sonoff RF Bridge to Expand Your Smarthome, Make Your Own Smart Garage Door Opener for $15, The Shelly 1 Relay Can Make Any Light Switch Smart. 1863 Your fireplace has to supply the fuel (gas) to the pilot light to create the fire. I have fixed those issues, and my sensor has been running reliably for the last 4 weeks. One solution would be to shine a laser on the dial and measure how much light is being reflected. Welcome to my blog, where I write about the areas of software development that Im passionate about. Thermocouples and thermopiles produce small amounts of voltage when heated. Here's a quick summary of some of the features that the Shelly has to offer: I wanted to use the Shelly EM to monitor the total power consumption of the house, which will involve installing the Shelly EM on the main tails that come in from the meter cupboard into the consumer unit. I'm a strong advocate of how Shelly devices can be a useful addition to automating your home. I chose the ESP32-POE-ISO model because it has galvanic insulation between the USB port and the PoE power supply. Overall, I dont think this is very risky at all, especially if youve installed light switches or a Shelly type relay before. With this automation, your Shelly relays should always appear as available 20 seconds after Home Assistant restarts. So I implemented my own pulse_counter by using a global variable, a binary_sensor with a delayed_on filter and a template sensor: All that's left now it to add the sensor to Home Assistant and configure it for the Energy dashboard. After publishing this blog post, a reader reached out with a solution: replace the sensors cap with a custom designed one: You can download the STL file for it here. C ( (" 10 0 obj Although this isn't supported, a post on the Home Assistant community discusses exactly this, and in the replies a community member going by the username of muzzak provides the following workaround. You also have the option to opt-out of these cookies. Turn off power to the circuit you are working with at the breaker. Under Server: enter the IP address of your MQTT broker along with its port (usually 1883). endobj I already have a PoE switch, so that means a single ethernet cable can connect the board to my network and power it! 4 0 obj Instead of using a standard electrical circuit, millivolt systems use a thermocouple/thermopile (powered by the pilot light) to generate enough electrical voltage to open the gas valve. And if I do, I'll update this post or tweet about it. Setting up a smart switch for the fireplace initially seemed a little scary, but in the end, I feel pretty secure in my installation. The availability_topic tells Home Assistant whether or not the Shelly is online, and is also updated by the Shelly. Underneath the fireplace may be a better solution for you. This category only includes cookies that ensures basic functionalities and security features of the website. Please feel free to add them to the This is a great safety feature! The thermocouple generates about 30 millivolts. Home Assistant has supported energy management since 2021.8 of Home Assistant Core, so I'm interested to see how easily the Shelly EM will integrate with my existing Home Assistant setup. So use Epoch Converter or some other tool to get the epoch seconds at the point in time you introduce this sensor and divide that by 3600 to give you the number of hours since the epoch. Open up the Energy section of Home Assistant: The Shelly EM is monitoring our grid consumption, so click Add Consumption. If you connect using a device with a cellular connection you may have problems connecting to the Shelly IP address depending on your settings. Luckily, the analog output is more varied. This is the default address for the web interface. If a sensor fits into more than one category, it will be listed multiple times. I considered the following options: I quickly ruled out the first 3 options because: That leaves me with a Z-wave relay and the Shelly 1. Looking for a sensor that outputs its values as an analog voltage? Have a look at the The sensor is powered by either 3.3V or 5V and has two outputs: a digital one (D0) and an analog one (A0). One thing I want to make sure of is that you use the Shelly 1 for this. First, I needed to have a good understanding of how my gas fireplace, and gas fireplaces in general, work. << I recommend you set up a static IP address here or set up a static DHCP lease using your router. %&'()*456789:CDEFGHIJSTUVWXYZcdefghijstuvwxyz For example: is it better to keep the house at 18C over night or should we let it cool down further and heat it up in the morning? << /ColorSpace /DeviceRGB # a certain treshold, increase the pulse counter. I connected the analog output to an ADC input pin on my ESP32. Sensors have been split into categories. It also means I need safeguards that will turn off the fireplace and notify me in case of malfunction or misuse. I hesitated due to perceived safety concerns and not knowing enough about how the fireplace works. An offset of 459543 is then deducted before dividing by 1000 so that the increment is 1Wh rather than 1kWh. I need to be sure I can reasonably control access to my smart fireplace. Best of all: it only costs 25! As our main fuse in the meter cupboard is rated for 80A, I opted for the 120A version. The cookie settings on this website are set to "allow cookies" to give you the best browsing experience possible. This website uses cookies to improve your experience while you navigate through the website. This board also packs a ton of extra features, although I won't be using any of these: With all the hardware done, I started working on the ESPHome configuration. In a millivolt system, there is a pilot light that is typically always on (or can be turned on) without a standard electrical connection (usually using a piezo ignitor). Why go wireless when you can go wired, right? Primary concerns are: Any solution I implement needs to safely keep mains voltage away from any direct interactions with the millivolt system and gas valves. https://www.youtube.com/watch?v=c00e5ngIv-4, Backblaze Blog | Cloud Storage & Cloud Backup, Raspberry Pi Foundation blog: news, announcements, stories, ideas, The GitHub Blog: Engineering News and Updates, The History Guy: History Deserves to Be Remembered. JFIF ` ` C Lastly, a power outage/restore should not cause my fireplace to turn on. All that's left now is to design and 3D print a case to protect the microcontroller from the "harsh" and dusty conditions in my basement. This threshold (for me 0,019V) can easily be changed for your setup (different sensor, different input voltage, different reflection on the gas meter, ). Affiliates do not influence my recommendations. Will cleaning the burner impact our gas usage, or is it mainly a safety thing? endobj Once again Ive found a great use for the inexpensive Shelly relay. Which Supervillain Is Your Home Network Arch-Enemy? You could also make a parallel run of wires to the thermocouple and gas valves to some type of manual switch somewhere else (like under the fireplace) to eliminate this problem. This code tells Home Assistant how to control and react to the Shelly 1 relay. They arent the cleanest or the best wiring, but hopefully, they help: Here is what the wiring before installing the Shelly. /Length 13 0 R I then discovered a board made by Olimex that not only has ethernet for data transfer but also for power (PoE). This looks like a mess, but this is after Ive wired in the Shelly to the gas valve (red and white small gauge wires), line, and neutral. In this article, Ill show you how I created a smart fireplace switch with $15 and a little bit of time. >> Go to the Internet & Security->Advanced Developer Settings and: Take note of the Will Topic. This is the MQTT topic that communicates whether or not the Shelly is up and running. First, you need to set up an MQTT broker and integrate it with Home Assistant. /Type /XObject Unfortunately for me, the sensor sometimes rapidly switches from ON to OFF for no good reason, resulting in bad readings. Iveexplained what MQTT is, how it works, and how to set it up in Home Assistantso I wont repeat it here. ), and Ive had a lot of success using it as a light switch and to control my garage doors. endobj example. This is slightly imperfect, as the energy sensor will have to consume some amount of energy. This was caused by infrared light being reflected by the glass cover of my meter. Id prefer the Sonoff because it allows local control, but it supports a much narrower frequency set (433Mhz) than the Bond so you would need to make sure its compatible. I then found a forum post that suggested the magnet inside my meter is very weak or isn't a magnet at all. This blog post is designed to illustrate the capabilities of the Shelly EM it is not an installation guide. I prefer to not blow things up, so I went with the ISO model. JFIF K K C Locate a ground wire and connect it to the wall switch. There is one downside to this installation. ESPHome is a system to control your ESP8266/ESP32 by simple yet powerful configuration files and control them remotely through Home Automation systems. Follow the official Shelly instructions and use a qualified electrician. /ca 1.0 If you want to access the fireplace switch from the cloud using an app, you have to enable cloud access in the web interface. Once again, ESPHome has proven itself as a very versatile tool. In Belgium, we're obliged to have burners inspected and cleaned every 2 years. /Type /XObject Ultimately, I chose the Shelly 1 relay because it supports MQTT control, its a dry contact relay (important! Additionally, it tells everyone in the room why the fireplace turned off through the Google Nest Hub. Unfortunately, on the ESP32 that interval can only be set to 13us, and I needed about 100 milliseconds. Here is the same diagram after installing the Shelly: The main differences in this diagram are: Hopefully, you can see from the diagram that you: Editors Note: Here are instructions for wiring the newer Shelly Plus 1 smart relay. Connect them to the, Cut a new load wire and connect it from the light switch to the. Looking for WS2811 and similar individually addressable lights? Once I'm awake, I'll get out of bed. If so you can also consider using something like the Bond RF controller or the Sonoff RF Bridge to add remote control. first person up in our house. However, since Ive integrated my fireplace switch with Home Assistant I can add some further safeguards. Now, when the power is out, my fireplace will not come on with the switch because the Shelly needs power. I know this is a bit of a long read, but I hope you found it helpful. There are really three parts to my journey to automate my fireplace. Youll need this to create the Home Assistant config. /SMask /None>> Creating a smart fireplace switch is something I have been interested in for a long time. This is of paramount concern to me. No spam ever! You need to be able to power the Shelly, and you need a neutral. Id have to undo a bit of what I installed to manually turn the fireplace on without power. This is an important safety feature! A new version has been release since you last visited this page: 2022.6.2 . << # Enable encryption (not yet a default setting for my devices), # This sensor exposes the total_pulses variable to Home Assistant and, # converts it to m (1 pulse = 0.01m on my meter), # Take a measurement every 100ms but only report the average. It compares the current voltage level with the previously measured one. I don't share your email and I have about as much time to create spam as you have to spend reading it! /Width 40 Power to the Shelly and the light switch, along with ground and neutral come from the second wall switch. The earlier diagram in this article shows how my fireplace worked before installing the Shelly. Introducing mains voltage to a system that doesnt need it, Potential impacts of malfunctions, misuse, and malicious remote access. /Filter /DCTDecode If you google for recommendations about creating a smart fireplace youll find many opinions telling you not to do it. I care deeply about producing quality-focused and maintainable software. Our meter tails are not coloured, so figuring out which was the right feed to monitor and which way round to place the current clamp took some trial and error. /CA 1.0 At this point, you can use the web interface to turn the fireplace on and off. Elster sells a reed contact that is specifically designed to be mounted onto these meters. Opinions expressed here are my own and may not reflect those of my employer, But more on that later! Side note: the utility company in Belgium is actually rolling out digital electricity and gas meters with a P1 port that you can interface with. Post Syndicated from BeardedTinker original https://www.youtube.com/watch?v=c00e5ngIv-4, By continuing to use the site, you agree to the use of cookies. I want at least the option to use local control and only expose to voice assistants via, I installed the Shelly at the switch that controls the fireplace. As you can see from the above photo, I'm using a single current clamp to monitor the incoming live feed. /BitsPerComponent 8 >> I then connected the reed switch to an ESP32 and waited for it to register my gas usage. These cookies will be stored in your browser only with your consent. q_m)Y& :e3u?/c7+Eq_]][V)$f[H? V}[_ [;hP[DkA~~K_}Gtx; Oc}wx^U+xv|VRNOms/#w_+:26wv/ bBV~j>(~ZZ,3Dl;FX x= p?` ~7LG*>~GV9vf^3?~)xx=Rs4f;k;v).2r$}; 9j WXu4]9aXnXnN^_OM%r>'q)m>h3Wmw f|m_xwk[$. Or you can add the following automation: Sending announce to the shellies/command topic tells all Shelly relays on your network to send an updated message to the Will Topic, allowing Home Assistant to see that they are available. I've written previously about how I've used Shelly's to make my existing light, Last year I made my own Raspberry PI powered LED strip for the desk in my home /Height 40 Overall, Im pretty happy with this project. Disclaimer: Before I continue, remember that working with electricity is dangerous, and it can kill. stream A few searches later, I came across the TCRT5000 sensor which uses infrared light to do precisely this. As long as youve done a good, secure job of wiring, your installation should be perfectly safe. Double-check they are correct and press save. At the top of the file, I defined two global variables for my pulse counter: The most interesting part is the lambda function. Below is the full wiring diagram for the Shelly EM: This diagram shows the most complete setup using two current clamps to monitor two feeds and controlling a contactor. ADC Sensor together with a formula like in the TEMT6000 There are two very important things to point out: Hopefully, this diagram helps clarify what I explained above. I hope I didnt scare you away with that last one. Here are a couple of pictures of my wiring. No spam, no selling your details, just notifications when I publish a new blog! But Xavier, you ask. Okay, I'm measuring gas usage. } !1AQa"q2#BR$3br I have an outlet there, but its hard for me to reach. >> Unfortunately, I got no measurements. The state_topic tells Home Assistant whether the fireplace is on or off (and is updated by the Shelly). It's an analog meter with a rotary dial that has a magnet on the last rotary element. Normally you would use a pulse_counter to count how many times the sensor is triggered. I was too busy making sure wires were carefully placed back into gang boxes and not touching for safety. Share this site with your friends and on social media (use the sharing links at the end of this page for your convenience), Put a link to HomeTechHacker on a site you have access to. w !1AQaq"2B #3Rbr $4%&'()*56789:CDEFGHIJSTUVWXYZcdefghijstuvwxyz ? The pilot flame heats a thermocouple or a thermopile. /Height 40 No mains voltage should enter this system. I'm a big fan of the ESP32 so naturally that's the one I chose. As a result, a Shelly EM can typically be used to monitor the power consumption of an individual circuit or the power draw of an entire house. With the sensor in place, it was time to decide on which microcontroller to use. Finally, click Show Me My Energy Dashboard on the last screen of the wizard. At first, I looked at absolute voltage levels, which fluctuate and caused it to measure 3 times more gas than we actually consumed. 12 0 obj Please join ourcommunity for exclusive content and updates. It could be a mirror instead. I bought a pack of these sensors (which only cost $5) and used poster putty to stick one on the glass plate of my gas meter. 9 0 obj Top 15 Christmas Tech Gifts under $50 (2019), My Smarthome Evolution: Part 2 Getting Sma. The current epoch timestamp (in seconds) is converted to hours. What will you do with this data? The output voltage is around 0.25V when the mirror is not facing the sensor, and when it is, the voltage drops to 0.18V. Second, I needed to feel secure and sure that automating my fireplace would be safe. It's very cool, but the rollout is quite slow. We also use third-party cookies that help us analyze and understand how you use this website. Why did I have to build my own pulse counter? Sending on and off payloads to the command_topic will turn the fireplace on and off, respectively. # This is mainly here because the internal_filter of the pulse_counter on ESP32, # can only be set to a maximum of 13us, which is way too low. %PDF-1.4 Below are a few ways you can show support: This page contains affiliate links. I tried repositioning the reed switch, but to no avail. However, this is mitigated by having the energy sensor increment by 1Wh every hour, which is the smallest possible unit and overall will have a negligible impact on your actual energy consumption. Why would you keep track of your gas usage? Just as before, add the energy sensor that we created and select the price entity. Do you have other awesome automations or cool setups? We'll assume you're ok with this, but you can opt-out if you wish. Now, via Home Assistant, I can set up google to Light my fire. I can also set up mood automations that include changing the light colors and dimming and turning on the fireplace. stream A product specifically meant for this purpose, such as: A smart switch and relay seem like a good combo, but most smart switches are controllable via cloud apps (although some have local control) and are large. UU 43GOM/|5hI. Although I've mainly used Shelly devices for automating lighting, they produce other devices such as an Energy Monitory (Shelly EM). If you have any suggestions for alternative sensors: let me know! Now I could write the ESPHome configuration for it. Have a look at the This sensor will track the number of hours elapsed since we've introduced the sensor: This sensor will increment by 1Wh from the time the sensor was introduced. I also added a filter to clean up the noisy ADC of the ESP32. On the left, it looks like they used thermostat wiring to connect up to the thermocouple (red and white wires). In my sensors.yaml file I have created the following sensor. Separate the IP address and port with a colon. After turning the power on, I configured the Shelly, which is the next step. The Shelly EM is an energy monitoring device which can use a current clamp to monitor the amount of energy being drawn from the power feed that the Shelly is monitoring. There are a couple of variations, but Im going to focus on millivolt ignition gas fireplaces. /Filter /DCTDecode In some ways it is safer than it was before; now I can turn it off remotely, and there are safeguards to automatically turn it off if it has been left on too long. However, once I got positive (rather than negative) readings within the app, I knew the device was installed just how I needed it. Open up Settings > Dashboards and click on the Energy dashboard. You can use my, The Shelly now uses the thermocouple to open the gas valve. Let me know what you think or if you have any questions in the comments or on Twitter. If it's larger than. What makes the Shelly 1 unique is that it is a dry contact relay; it wont pass the mains voltage on to the switch activating the fireplace. It would also get stuck in a loop when the mirror stopped in front of the sensor.

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