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| en:hardware:homelab:controller:atmega2561 [2011/10/21 21:06] – illo | en:hardware:homelab:controller:atmega2561 [2020/07/20 12:00] (current) – external edit 127.0.0.1 | ||
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| ====== Controller module ATmega2561 v1.x ====== | ====== Controller module ATmega2561 v1.x ====== | ||
| - | <note important> | + | The main module of the HomeLab is a controller development board (controller board) equipped with the AVR ATmega2561 microcontroller. In addition to the microcontroller, |
| - | The main module of the HomeLab is a controller development board (controller board) equipped with the AVR ATmega2561 microcontroller. In addition to the microcontroller, | + | |
| * ATmega2561-16AU microcontroller | * ATmega2561-16AU microcontroller | ||
| Line 11: | Line 11: | ||
| * 14,7456 MHz clock | * 14,7456 MHz clock | ||
| * Ethernet module with RJ45 connector | * Ethernet module with RJ45 connector | ||
| - | * SD card slot | + | * SD memory |
| * Status LED (PB7)and Power LED | * Status LED (PB7)and Power LED | ||
| * Programmable button (PC2) and reset button | * Programmable button (PC2) and reset button | ||
| Line 20: | Line 20: | ||
| [{{ : | [{{ : | ||
| - | Module | + | The module |
| + | The module can be powered with a step down transformer with an output voltage which is greater than 6 volts and lower than 15 volts. In order to reduce power losses it is recommended to use power supply between 6-9V. The POWER LED signalizes a connected feed (“POWER” description on the board). | ||
| + | All ATmega2561 signals are available on three connectors on the edge of the board. Connectors pin assignment is described in the next part of this instruction. It includes full descriptions of ATmega2561 pins and their alternative functions. The module is equipped with a microprocessor reset circuit (when power on) and a reset button for a microprocessor restart. A microprocessor can be programmed with an on-board JTAG programmer over USB or with an ISP interface. | ||
| + | To the seventh pin of port B (named as PB7) the status LED (described as PB7 on the board) is connected. This LED can be used as a status indicator of application software. Low state on PB7 pin causes the status LED to be lit. | ||
| + | The module is equipped with SD memory card slot, where it can be used as a standard microSD memory card. The memory card is connected to the microcontroller via the ISP interface and can be used to store data where data must be maintained even if the power supply is removed. | ||
| - | Module can be powered just from step down transformer with output voltage greater than 6 volts and lower than 15 volts. In order to reduce power losses it's recommended to use power supply between 6-9V. POWER LED signalizes connected feed (“POWER” description on the board). | + | [{{: |
| - | + | ||
| - | All ATmega2561 signals are available on three connectors on the edge of the board. Connectors pin assignment is described in the next part of this instruction. It includes full descriptions of ATmega2561 pins and their alternative functions. The module is equipped with microprocessor reset circuit (when power on) and reset button for microprocessor restart. A microprocessor can be programmed with on-board JTAG programmer over USB or with ISP interface. | + | |
| - | + | ||
| - | To the seventh pin of port B (named as PB7) the status LED (described as PB7 on the board) is connected. This LED can be used as a status indicator of application software. Low state on PB7 pin causes the status LED to be lit. | + | |
| - | + | ||
| - | Module is equipped with SD memory card slot, where can be used standard microSD memory card. Memory card is connected to the microcontroller via the ISP interface and can be used to store data where data must be maintained even if power supply is removed. | + | |
| - | [{{: | + | |
| ===== Connector Pins and Functions ===== | ===== Connector Pins and Functions ===== | ||
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| |12|GND|-|GND | | |12|GND|-|GND | | ||
| - | ~~PB~~ | + | < |
| {{: | {{: | ||
| Line 111: | Line 108: | ||
| |26|3V3|- | |26|3V3|- | ||
| - | ~~PB~~ | + | < |
| - | ===== Ühendamine | + | ===== Connecting |
| - | Connecting | + | When connecting the controller |
| - | [{{:kit:kit_2561_test.jpg? | + | [{{:kit:atmega2561_connected.jpg? |