Stemedu 2PCS USB to ESP-01 Adapter, ESP8266 Wireless WiFi Module Wi-Fi CH340G, UART PORG, 4.5-5.5V, 115200 Baud Rate

I've been using this device for just over a year now. The programmer worked great out of the box, and has continued to function properly over time. Slide the switch to the left to view serial communications. Slide the switch to the right and program the ESP-01 with ease. This is so much better than using a FTDI and jumper cables while also grounding the pin to upload new code. I should probably note my picture includes an ESP-01, not included with the programmer.

Building a little breadboard programmer is fun the first time, but then when the cat gets it, it's less fun the second time. The ESP01's are a little more annoying to setup than the bigger siblings.I think it's worth building a basic one yourself, as a learning experience, then quickly move on to this.These ESP01's are so cheap and useful, it's easy to grab a bunch then setup for a single sensor and plant them all over the house. Doing that requires a reliable and easy way to program and test. I had tons of problems with a loose wire in the breadboard, or any number of things which made this frustrating. This little gadget makes a workflow for programming and testing so much more reliable.I have no issues with this in a USB3 port which puts out 5v.

Bonjour,Adaptateur parfait pour la programmation des esp01 avec visualstudio code

Funziona bene .Seguite i tutorial nei vari siti e la programmazione del modulo esp8266 sara' semplicissima

Had to return a different version which was the wrong voltage and provided no way to set program mode. This item however has a simple switch to 'prog' mode and voltage is all correct so easy to program an ESP-01.One thing to remember. The ESP-01 is power hungry and is unable to run from a low power (i.e. regular USB 1 or 2) port. Had to connect through a POWERED hub, then everything worked 100%.