Heltec Wireless Stick Lite GPIO output current

#1

Hi,

I want to connect HC-04 ultrasonic Vcc pin to a GPIO pin to control sensor on/off. HC-04 working current is 15mA. Can GPIO pin on Heltec Wireless Stick Lite provide that current to HC-04?
I am doing this because I want to put Heltec Wireless Stick Lite in deep sleep and also save power not connecting HC-04 directly to the battery.

Thanks for help

#2

As can be seen from the datasheet(https://www.espressif.com/sites/default/files/documentation/esp32-pico-d4_datasheet_en.pdf) (5.3), the minimum current can reach 29mA.

#3

I suggest you use a MOS tube to control the power on and off of the sensor, like the Vext of the Wireless Stick Lite,