No, I'm not using any protection board. Is that any different from a charging module/board like the screenshot below? tp4056 charger module.jpg Do you know any good booster board that could (hopefully) work on the sender node? I did think of buying a cheap 2600 mah powerbank to power the receiver no...

Sorry, correction to this part:

au_nel wrote: I soldered the pads next to A and B, as the instructions said, to get 5V output on the booster.

Its supposed to be "I broke apart the pads next to A and B using a soldering iron, as the instructions said, to get 5V output on the booster."

The current I measured from the booster to the sender node was 0.2 A. Is this enough?

I soldered the pads next to A and B, as the instructions said, to get 5V output on the booster. I don't think there's an enable pin.
This is the booster I am using:

Hi all, I've got two ESP32s: one acting as the sender node with 3 sensors (DHT22, MQ-2, and MQ-7) connected to its 5V and GND pin, the other acting as the receiver node. The two ESP32s are communicating through ESPNOW and the receiver node is connected to the wifi to upload the sensor values to Thin...

Firstly, thanks for replying! It's my first time using this platform and I was waiting for so long for the notification button to change but it didn't and I thought no one replied to me (I realized just now how stupid this was :roll: ) I tried powering the ESP32 with two lithium AA batteries in seri...

Hi guys, This is my first time doing a project with ESP32 and I really don't know what appropriate batteries/setup to use.. I use ESP32 DevKitC Nodemcu. I have three sensors connected to it: DHT22, MQ-2, and MQ-7. Are two 18650 batteries in series enough to run it? Or do I need to step the 3.0V - 3....