| In the last installment we built a small stand-alone device using the ESP32 Pico Kit, an RGB LED and an LDR, which we used to measure the am...
All items tagged with RGB LED and Journey into the Cloud - Article series (12)
| In the last installment, we built a small device using the ESP32 DevKitC, an RGB LED and a light-dependant resistor (LDR). This device perio...
| In previous parts of this series we saw how to use a web page on a local network to configure an IoT device. In this part, we use a web pag...
| In the last episode, we configured the ESP32 to set up its own local Wi-Fi network. With a PC, smartphone or tablet, we are able to log into...
| In the last episode of this series we produced a small web server using the ESP32 DevKitC. On request from a web browser running on a PC or...
| In the recent installments, we used the MQTT protocol to exchange messages containing measurement values and commands between different clie...
| In this series we have developed MQTT clients able to send messages back and forth over the internet. With the summer break behind us we tak...
| The Pretzel board is a really useful tool especially when you are starting out with networks. Now however it was time to try out a different...
| 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...