Stemedu 2PCS USB to ESP8266 Adapter Module ESP-01 Prog ESP-01S Programmer Downloader CH340C Driver with Reset Button, Easy to use

Much easier than the ttl boards where you have to use jumper wires. I had one already like that, then saw this and love it.

Reviewed: Stemedu 2PCS USB to ESP8266 Adapter Module ESP-01 Prog ESP-01S ProgrammerESP-01S are really, really small. The trade off is you only get two GPIOs unless you try really hard with the RX and TX connections. However 1 wire only needs one GPIO for lots of devices, eg Dallas DS18B20 temp sensors.This board has a breakout for all eight pins, so if you have USB power handy to where you need this thing eg a computer room then its a very cheap way to add a set of temperature sensors.So far, for me the programmer has just worked and you simply forget about programming vs normal mode.

ESP8266 pins are horribly laid out and not breadboard friendly. You can use hookup wires and/or program it without this but it definitely makes it a lot easier. Annoyed I didn't get it sooner, low price makes it worthwhile if you're planning to do projects with these little ESPs.

Great timesaver - easy to use - no reset switches to bother with, etc.I am new to all things Arduino and struggled to flash an ESP-01 boards I have with just the Arduino IDE based on wiring setups I saw on YouTube, etc. This device takes away all that extra work.Just a couple of notes if your run into issues getting setup:My first attempts on one Windows 10 PC weren't encouraging - Timeout packet errors, board not found errors, etc. when I attempted to upload a sketch. The setup doc link gives very basic instructions on setting up the device. I tried another Windows 10 machine I have and it worked right away - basically plug and play!I had inadvertently set the Reset Method for the Generic ESP8266 Module in the Arduino IDE to "no dtr" based on bad advice on the problem PC (should be dtr aka nodemcu). I also manually deleted the CH341 drivers and reinstalled them from the link provided in the vendor description. Problems corrected.

Quanto ricevuto e' perfettamente aderente alla descrizione del prodotto sulla pagina Amazon.Il modulo ESP-01S ha una flash memory di 4MB(*) (32Mbit) come confermato da verifica(vedasi immagini allegate), il chip CH340 e' presente sul Prog Downloader Stemedu come confermato via software.L'upgrade, il download ed il backup della firmware(AT e/o Micropython) non richiede alcun intervento di setup sull'hardware, come personalmente verificato.L'unico appunto riguarda il prezzo, che a mio parere e' eccessivo; quindi 4 stelle.(*) permette di installare la firmware Micropython per flash size >= 2MB avente inclusi moduli quali urequest ed ussl - non presenti nella versione per ESP-01S con flash da 1MB