ESP-01s 1 MB WiFi Microcontroller ESP8266 ESP01s Replace ESP-01 ESP01

 

ESP-01s 1 MB WiFi Microcontroller ESP8266 ESP01s Replace ESP-01 ESP01 - Here comes ESP-01s, the new version of the well-known ESP-01.

ESP-01s vs ESP-01 differences:
1. Red power LED is removed (saving a couple mA and good for battery operated project)
2. Blue LED is now on pin 2
3. Has silkscreen with pin labeling on the back
4. Has far more chip capacitors for better working stability
5. The WiFi range has been slightly increased
6. Has a pull-up resistor connected between CH_PD and Vcc, so only need to connect Vcc & Gnd for booting and running

Specifications:
+ 32-bit RISC CPU: Tensilica Xtensa LX106 running at 80 MHz
+ 64 KiB of instruction RAM, 96 KiB of data RAM
+ 8 Mb (1 MB) External QSPI flash
+ IEEE 802.11 b/g/n Wi-Fi
+ Integrated TR switch, balun, LNA, power amplifier and matching network
+ WEP or WPA/WPA2 authentication, or open networks
+ SPI, I²C, I²S interfaces with DMA (sharing pins with GPIO)
+ UART on dedicated pins, plus a transmit-only UART can be enabled on GPIO2
+ 1 10-bit ADC