In the following pictures, the Esp8266’s Rx is connected to the Uno’s Rx. Is this a mistake?
Secondly , the esp8266 uses 80mA, however, the uno only provide 20mA! Should I add a transistor in the 3.3v pin of the uno?
![](https://sp-ao.shortpixel.ai/client/to_webp,q_lossless,ret_img,w_265,h_353/https://everythingesp.com/wp-content/uploads/2019/03/Screenshot_20180317-162418.png)
In the following pictures, the Esp8266’s Rx is connected to the Uno’s Rx. Is this a mistake?
Secondly , the esp8266 uses 80mA, however, the uno only provide 20mA! Should I add a transistor in the 3.3v pin of the uno?