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Arduino UNO and ESP8266 module GET using AT command sometimes FAIL. - Home Automation - Arduino Forum
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c - AT-Commands ESP8266 01: AT+CIPSTART: How to fix response Link type Error / Can't connect with TCP - Stack Overflow
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Why does SIM respond to AT+CIPSEND with “+CME ERROR: operation not allowed” when the IP address and the TCP connection has been established? - SIM800L - Embedded Advice Forum
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Forums / Embedded GSM Development / Command set for SIM300 to send data to tcp server via gprs - Rickey's World of Microcontrollers & Microprocessors
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AT+CIPSEND > 130 bytes returns SEND FAIL but returns SEND OKAY when bytes less than 130 bytes - ESP8266 - Embedded Advice Forum
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