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RS232 to TTL serial transceiver breakout based on the MAX3232, running from 3.0V to 5.5V at up to 250kbps with onboard charge pump capacitors.
The ESP-01S is an upgraded version of the original ESP-01 module, built around the ESP8266EX chip from Espressif. It's a compact, low-cost WiFi module that adds wireless networking to any microcontroller project with minimal extra hardware.
SparkFun Transceiver Breakout - MAX3232 (SF Transceiver MAX3232)
RS232 to TTL serial transceiver breakout based on the MAX3232, running from 3.0V to 5.5V at up to 250kbps with onboard charge pump capacitors.
ESP8266 ESP-01S WiFi Serial Transceiver Module (ESP8266 ESP-01S)
The ESP-01S is an upgraded version of the original ESP-01 module, built around the ESP8266EX chip from Espressif. It's a compact, low-cost WiFi module that adds wireless networking to any microcontroller project with minimal extra hardware.
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