Tagged: Sleep and Wake UP

STM32 power saving: intro and Arduino vs STM framework 0

STM32 power saving: intro and Arduino vs STM framework – 3

In a remote device, one important feature can be the power consumption, and like other devices, STM32 allows a set of Low Power states.
In the Arduino framework, these states are wrapped and simplified to allow the most straightforward management, but we will look at the original state of STM32 to better understand the test results.

LoRa wireless remote water tank and pump controller (esp8266) Client PCB assembling 0

LoRa remote water level and pump controller (ReWaL): Client PCB – 5

I must fill a tank 1.5 km away, so I create a 2-part controller.
A server with a relay to manage the pump and a client solar / battery-powered to check the tank’s status and notify It to the server.
Here we are going to assemble the Client PCB.

LoRa wireless remote water tank and pump controller (esp8266) Client software Arduino IDE 0

LoRa remote water level and pump controller (ReWaL): client software – 3

I must fill a tank 1.5 km away, so I create a 2-part controller.
A server with a relay to manage the pump and a client solar/battery-powered to check the tank’s status and notify the status to the server.
Here we are going to look at the Client software.

ESP32 practical power saving preserve gpio status on deep sleep UPL and external wake-up 1

ESP32 practical power saving: preserve gpio status, external and ULP wake up – 5

ESP32 has the ability to take advantage of many energy saving modes, but when you set sleep you also lose the status of the pins, but there is a way to preserve it and we will analyze it. Furthermore, the esp32 has powerful features such as the UPL a low-power processor that can wake you up in case of need.