The onboard UART CP2014 by Silicon Labs lets you easily program the ESP32 from your Windows, Mac or Linux computer. This leads to better signal strength for transmission and reception. We also took care that the dev board’s PCB doesn’t block the antenna of the ESP32 module. The size of the ePulse dev board is perfect to fit into a breadboard and leave one row of pins free for prototyping your circuit. Please note that to reduce standby power consumption this module comes without any status LEDs. We also made sure that the integrated serial-2-usb chip is only consuming power when the device is powered through the USB port. The device wakes up, connects to WiFi, sends the command over MQTT and goes back to sleep until the next time a button is pressed. For instance, a WiFi remote control for home automation can sleep until the user presses one of the buttons. This low sleep consumption is perfect for applications where the device sleeps most of the time and only wakes up from time to time to complete a task. Most ESP32 and ESP8266 board consume around 100 – 130uA. When the ePulse board is in deep sleep it only consumes between 25uA (at 3V3) and 35uA (at 12V). The VIN pin accepts voltages between 3V3 and 12V. EPulse, the low power ESP32 development board, is optimized for applications where a low sleep current and a wide range of input voltage are required.
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