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blog.dbrgn.ch | ||
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blog.kiranshila.com
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irq5.io
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| | | | | The advantage of Zigbee devices is that they are very low power, and they communicate in a wireless mesh network. The sensors are small and can work off a CR2032 coin cell for at least 2 years, maybe more. Depending on the type of sensor, they cost around US$10 and are readily available from various... | |
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smallhacks.wordpress.com
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| | | | | Some time ago my DHT22 sensor, connected to the RPi1, died (humidity always was showing 99%), so I decided to replace it. I found a cheap AM2320 sensor that was in the same case as my old DHT, so I ordered it. When it arrived I found that its used 4 PINS instead of 3... | |
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ncona.com
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| | | A few months ago, I started learning Arduino, and recently I finished my first small project. After finishing the project, I was wondering if I could build the same thing for cheaper, and that's when I stumbled into ESP32. ESP32 is an MCU (Micro Controller Unit) that got very popular because it has integrated WiFi, Bluetooth, very good documentation and is relatively cheap for what it does. Interestingly, the Arduino UNO R4 WiFi contains two MCU and one of them is an ESP32. Getting an ESP32 The easiest w... | ||
