Olimex ESP32-EVB Board with Ethernet, CAN Bus, and Relays up for Sale for 26 Euros

One of the new feature of Espressif ESP32 SoC over ESP8266 is the inclusion of an Ethernet MAC interface, but so far few boards come with an RJ45 jacks. ESP32 Monster board is an option, also including an OLED Display and CAN Bus, and sold on Tindie for $35, but Olimex has now stocked their ESP32-EVB board with Ethernet, CAN Bus, and two relays, and you can purchase it for 26 Euros per unit, and less in larger quantities. Olimex ESP32-EVB Rev. B specifications: Wireless Module – ESP32-WROOM32 module with 802.11 b/g/n WiFi and Bluetooth LE Wired Connectivity – 10/100M Ethernet with RJ45 jack (via LAN8710A) External Storage – micro SD slot Relays – 2x 10A/250VAC relays with LED status Expansion 40-pin GPIO female header (2.54mm pitch) UEXT connector for sensors and modules CAN Bus USB – 1x micro USB port for debugging (CH340T) and power Misc – Reset and user buttons, IR receiver and transmitter with up to 5 …

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Karl’s Home Automation Project – Part 4: MQTT Bridge Updated to Use YS-IRTM IR Receiver & Transmitter with NodeMCU

In a previous article, I wrote about an MQTT bridge by 1technophile. I added a DHT temperature and humidity sensor as well as a light sensor. Previously it included a software decoder to decode the IR signal. I never did test the IR transmitter on the gateway, as I didn’t have the parts. But thanks to IC Station, who sent me over a small YS-IRTM hardware based decoder and NodeMCU that I am writing about today. I have replaced the software based version with the YS-IRTM module in the latest update. I found this project challenging. I admit I am a little weak in my programming skills. It was difficult to find documentation but I found a forum talking about this device and basics of how it works. When an IR code is recognized it sends 3 hex codes via serial connection on the transmit pin. To transmit, it expects 5 hex codes: A1,F1,xx,xx,xx. A1,F1 tells it to send the …

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How to Control Your Air Conditioner with Raspberry Pi Board and ANAVI Infrared pHAT

Leon ANAVI may be a full-time software engineer, but in his spare time he has started to develop open source hardware project with the help of others and by himself. Last year, I got hold of his RabbitMax Flex HAT for Raspberry Pi, and tested it with the provided LCD display, one temperature sensor, and a Raspberry Pi 2 board. The board also featured IR receiver & transmitter, and I tried to use it with my aircon remote control, but at the time I did not find a way to do it easily, and control my TV with LIRC instead. Leon has now made a simpler, smaller, and cheaper add-on board for Raspberry Pi Zero, and other Raspberry Pi boards with a 40-pin header, with 3x I2C headers, two IR transmitters, and one IR receiver. He sent me a sample of “ANAVI Infrared pHAT”, and after quickly describing the board, I’ll show how to I could control my air conditioner …

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Sevenhugs Smart Remote is a Universal Direction Aware WiFi, Bluetooth and IR Remote Control (Crowdfunding)

You may have all sort of remote control devices around your home from the traditional IR remote control for your TV, air conditioner, audio system etc.., as well remote control apps for WiFi or Bluetooth objects such as smart light bulbs or water pumps running on your smartphone. Sevenhugs Smart Remote promises to replace them all, and all you have to do is to point the remote control to your devices, or setup virtual actions to your door or window to order a Uber drive or check the weather. Sevenhugs Smart Remote specifications: MCU – ARM Cortex-M4 @ 200 MHz System Memory – 32 MB RAM LCD – 3.43″ touch screen IPS display; Dragontrail damage ans scratch resistant cover glass, anti-fingerprint & anti-glare Wireless Connectivity – IR transceiver, 802.11 b/g/n WiFi and Bluetooth 4.1 LE connectivity USB – USB C port for charging Sensors – Indoor positioning sensor, accelerometer, gyroscope, compass, ambient light sensor Misc – Small speaker Dimensions – …

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Broadlink RM Mini 3 is a $10 WiFi IR Blaster for Home Automation

Many electrical appliances such as TVs, air conditioners, heaters, and so on are still controlled using an infrared remote control, but as more and more people are getting used to their smartphone to control pretty much everything, devices such as Xiaomi Mi Smart Remote Center that allows to control IR appliances with ANdroid or iOS mobile are starting to come to market. However during my Smart Remote Center review, I noticed that the app was only available in Chinese, and that it was not quite able to perform all the tasks I wanted (e.g. multiple IR codes programming). There’s now a cheaper and small device available in the form of Broadlink RM Mini 3 “Black Bean” that sells for just $9.88 including shipping, and whose app supports not only Chinese, but also English, Russian, Japanese, and other languages. Broadlink RM mini 3 specifications: WiFi – 802.11 b/g/n @ 2.4 GHz IR – 38 KHz frequency; omni directional (6 transmitters); 12 …

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Xiaomi Mi Smart Remote Center Review

Xiaomi Mi Smart Remote Center is a tiny box with WiFi connectivity and IR transmitters that is used to control infrared enabled devices such as TVs, medai players, air conditioners and more with your Android smartphone. The good thing is that it only costs $20, so I asked GearBest to send a sample to check it out, which they did. I’ll start this review by checking out the hardware, before running MiHome app to control a television and air conditioner. Xiaomi Mi Smart Remote Center Unboxing and Teardown The package is just a cardboard box with Mi logo. Once you open the page there’s a sticker with the QR core redirecting to MiHome app. You can peel it off, and take the box out of the package, where you’ll also find a USB to micro USB cable for power, and a user’s manual in Chinese only. To open the device (and void your warranty), turn it around… … remove the …

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$20 Xiaomi Mi Smart Remote Center Controls Infrared Home Appliances via Your Smartphone

Home automation used to be costly and complex to install, and some solutions are still that way, but several devices have dramatically brought the cost down and simplicity up including Orvibo Wiwo S20 WiFi smart socket, now selling for $16, Semlamp SL-011 – an $8 audio controlled relay -,  or smart light bulbs like Yeelight. All three items have the advantage of being plug-and-plug, inexpensive, and controlled wirelessly using your iOS and Android smartphone. There are also been some WiFi, IR and RF gateways on the market, such as Broadlink RM2 / Pro, that can control devices such as smart socker, air conditioner, TV, and items using the 315/433MHz band. If you only want to control IR (and WiFi?) devices, and don’t need to control RF devices, Xiaomi Mi Smart Remote Center sells for half the price for Broadlink Pro for just $19.99 on GearBest. Xiaomi Mi Smart Remote complete specifications might be somewhere on the “Chinese web”, but so …

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