Possible, but more work than I wanted to put in at the moment. One option is to change the PWM frequency, but that would mean digging in the Arduino libraries. My decoupling capacitors were singing due to piezoelectric effects. Running close to 600Hz, that is not a surprise. While building an RGB PWM controller with my Uno, I found the Uno’s PWM created a buzzing noise. That is pretty impressive battery life without doing any optimizations or sleep modes. It would send the status of a PIR Sensor over WiFi to an MQTT broker every 2.5 seconds. When hooked up my Adafruit HUZZAH Feather to a 2500 mAh Lithium Ion battery, it ran for almost two days. WiFi causes the board to draw about 700 mA. One area I have not worked in yet is putting the boards to sleep. With built-in WiFi, these boards are ideal for Internet activities. That is why my last two tutorials introduced MQTT and showed how to make MQTT work with an ESP8266. My current project involves home automation and IoT stuff. ESP8266 is ideal for Internet of Things (IoT) Here are the 5 reasons the ESP8266 is my go-to Arduino board.ġ. However, when it came to day-to-day “make something quickly” type work, I relied on my Uno. Wait what? James uses something other than Arduino? Yes, I do! I have many different boards and have used most of them for one task or another. I like them so much that my Adafruit Feather HUZZAH with ESP8266 has become my go-to Arduino board. The biggest surprise from that post is people seem to think I do not like the ESP8266! This idea is not the case the ESP8266 is awesome. A couple of weeks ago I posted four things to know about the ESP8266 before using one.
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