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Calamari Lure
Note: This board may not be available, however the board files are available below
Calamari Lure
The Calamari Lure is designed as a demonstration board for working with the GPIO and low-speed interface. It attaches to the low-speed interface on the MinnowBoard MAX, and provides a compact and easy way to experiment with a variety of devices -- without the hassle of gathering your own discrete components and doing your own breadboarding.
The Calamari Lure is produced by CircuitCo, and is available to purchase from Mouser. (Note: Lures are owned and supported by their respective owners and manufacturers. The community can only offer best-effort help; issues should be taken to the respective manufacturers and designers.)
The Calamari Lure features:
- 2 PWM controlled LEDS
| Signal | Function | PadConf |
|---|---|---|
| SIO_PWM_00 | LED1 | PWM |
| SIO_PWM_11 | LED2 | PWM |
- GPIO Output controlled 7 Segment LED display (with 595 shift register)
| Signal | Function | PadConf | Linux GPIO# (≤3.17) |
Linux GPIO# (≥3.18) |
|---|---|---|---|---|
| GPIO_S5_2 | Clock | GPIO Output | 84 | 340 |
| LPE_I2S2_DATAIN | Data | GPIO Output | 218 | 474 |
| LPE_I2S2_DATAOUT | Latch | GPIO Output | 219 | 475 |
| LPE_I2S2_FRM | Clear | GPIO Output | 217 | 473 |
- ADC input using a variable 10K resistor slider potentiometer (via a SPI based ADC)
| Signal | Function | PadConf |
|---|---|---|
| SIO_SPI_CS | Chip Select | SPI |
| SIO_SPI_DO | Data Out | SPI |
| SIO_SPI_DI | Data In | SPI |
| SIO_SPI_CLK | Clock | SPI |
- 3 GPIO inputs via three buttons
| Signal | Function | PadConf | Linux GPIO# (≤3.17) |
Linux GPIO# (≥3.18) |
|---|---|---|---|---|
| LPE_I2S2_CLK | S1 | GPIO Input | 216 | 472 |
| SIO_UART1_CTS | S2 | GPIO Input | 227 | 483 |
| SIO_UART1_RTS | S3 | GPIO Input | 226 | 484 |
- 2 TTL UART headers
| Signal | Function | PadConf |
|---|---|---|
| SIO_UART1_TX | UART1 TX | UART |
| SIO_UART1_RX | UART1 RX | UART |
| SIO_UART2_TX | UART2 TX | UART |
| SIO_UART2_RX | UART2 RX | UART |
- RGB GPIO controlled LED
| Signal | Function | PadConf | Linux GPIO# (≤3.17) |
Linux GPIO# (≥3.18) |
|---|---|---|---|---|
| GPIO_S5_0 | RED | GPIO Output | 82 | 338 |
| GPIO_S5_1 | GREEN | GPIO Output | 83 | 339 |
| ILB_8254_SPKR | BLUE | GPIO Output | 208 | 464 |
- I2C EEPROM at 0x50
| Signal | Function | PadConf |
|---|---|---|
| SIO_I2C5_DATA | I2C Data | I2C |
| SIO_I2C5_CLK | I2C Clock | I2C |
Reference Material
- PWM Tutorial
- 595 Tutorial
- 7 Segment Display Character Mapping
- MCP320x Linux Kernel Device Driver
- SPIDEV - userspace SPI character device driver interface documentation
- I2CDEV - userspace I2C character device driver interface documentation
Components
- Single tricolored surface mount RGB LED (datasheet)
- 74HC595 Serial Shift Register (datasheet)
- 7 Segment Display (datasheet)
- 10k Slider Potentiometer (datasheet)
- NPN Transistor MMBT2222A (datasheet)
- Microchip MCP3004 SPI Based Analog-to-Digital converter (datasheet)
- CAT24C256W I2C based EEPROM (datasheet)
Calamari Lure Design Files
These design files for the Calamari board are licensed: Creative Commons Attribution-NonCommercial 4.0 International License:
