All items tagged with RGB LED and MQTT (14)

| In the last installment of this series, we developed a small sensor node based on the Pretzel board (equipped with an ATmega and ESP8266 WiF...

| In the last episode i built a small sensor board. The ATmega on the Pretzel board periodically takes a reading from a phototransistor and co...

| In the last installment of this series I ported my mini-library for publishing MQTT messages to the Pretzel board which has an ATmega328 and...

| n the last installment with the help of an open-source library I was able to program an MQTT client for Android. Now I can send out text mes...