Introduction: Mod a USB to TTL Serial Adapter (CP2102) to Program ESP8266
Teachers! Did you use this instructable in your classroom?
Add a Teacher Note to share how you incorporated it into your lesson.
Step 1: Materials
- 1 x CP2102 USB adapter, it's easy be found at eBay by keyword cp2102
- 1 x AMS1117-3.3
- A knife
- A soldering iron
Step 2: Cutting Off the Original 3.3V Output
The 3.3V from CP2102 has only 200mA output. It's not enough for esp8266. I cutting off the 3.3V output with an knife.
Step 3: Soldering LDO AMS1117-3.3
Use the pin 5V as input of AMS1117, connect the output to 3.3V
Now the USB adapter can driven esp8266 directly.