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| Both sides previous revisionPrevious revisionNext revision | Previous revision |
| en:hardware:homelab:communication:atmega128mod [2010/11/21 20:24] – raivo.sell | en:hardware:homelab:communication:atmega128mod [2020/07/20 09:00] (current) – external edit 127.0.0.1 |
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| When using the old Controller module (ATmega128) and version 5 Communication module following modification have to be performed to avoid conflicts of MAX232 drivers. | When using the old Controller module (ATmega128) and version 5 Communication module following modification have to be performed to avoid conflicts of MAX232 drivers. |
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| It is necessary to disconnect the MAX232 driver Rx on the Controller module. By using the soldering iron heat the pad 9 (see picture below) and blend the chip pin up with a small screw driver. All other pins of the MAX232 chip can be leaved as they are and in case of later need the supply pin can be easily connected again. | It is necessary to disconnect the MAX232 driver Rx1 on the Controller module. By using the soldering iron heat the pad 9 (see picture below) and bend the pin up with a small screw driver. All other pins of the MAX232 driver can be left as they are and in case of later need the disconnected pin can be easily connected again. |
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| [{{ :examples:communication:max232_pin9.jpg?580 |MAX232 chip and Rx1 pin}}] | [{{ :examples:communication:max232_pin9.jpg?580 |MAX232 driver and Rx1 pin}}] |
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| [{{ :examples:communication:max232_modification.jpg?580 |Heating and blending the pin up}}] | [{{ :examples:communication:max232_modification.jpg?580 |Heating and bending the pin up}}] |
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