ARDUINO WITH GSM - Making a Call & Sending SMS
- 6 years ago
How to Control a GSM board using Arduino.This video explains how to make a call & how to send SMS from an Arduino through GSM\r
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Many are confused with the connection.Generally Rx goes to Tx & Tx goes to Rx..This is the rule.But the GSM board I,ve used here has a MAX232 IC & T1IN/R1OUT of 232 IC is printed as TX/RX & not that of GSM SIM300.\r
If this is not working for you simply swap the connections.The connections shown in video is correct when you use a NSK GSM board.\r
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Always ensure that\r
Rx of Arduino (pin 0) goes to pin 11 (T1 IN) of MAX232 IC & Tx of Arduino ( pin 1) goes to pin 12 (R1 OUT) of MAX232 IC.\r
No matter whether youve or not the 232 IC ,as we are using TTL logic signals\r
\r
Many are confused with the connection.Generally Rx goes to Tx & Tx goes to Rx..This is the rule.But the GSM board I,ve used here has a MAX232 IC & T1IN/R1OUT of 232 IC is printed as TX/RX & not that of GSM SIM300.\r
If this is not working for you simply swap the connections.The connections shown in video is correct when you use a NSK GSM board.\r
\r
Always ensure that\r
Rx of Arduino (pin 0) goes to pin 11 (T1 IN) of MAX232 IC & Tx of Arduino ( pin 1) goes to pin 12 (R1 OUT) of MAX232 IC.\r
No matter whether youve or not the 232 IC ,as we are using TTL logic signals\r