RBoard
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Overview
Rboard is a unique Arduino board which features 4 channels isolated relays, an XBee socket, and an ATMega328. This board will add relay control as well as wireless connectivity to your projects. It’s great for anything from home automation to robot control. The possibilities are endless!
Features
- 4 optocoupler isolated channels
- 4 mechanical relays with status indicator LED
- Both “NC” and “NO” ports for each relay
- ATMega328P with XBee interface headers, Micro SD socket
- With Arduino Duemilanove bootloader
Hardware
| Pin of Arduino | Description |
| D0 | RxD |
| D1 | TxD |
| D2 | XBee Reset |
| D3 | nRF24L01+_IRQ |
| D4 | Relay 0 |
| D5 | Relay 1 |
| D6 | Relay 2 |
| D7 | Relay 3 |
| D8 | nRF24L01+_CE |
| D9 | nRF24L01+_CS |
| D10 | SD_CS |
| D11 | SPI_MOSI |
| D12 | SPI_MISO |
| D13 | SPI_SCK |
| A0 | AD0 |
| A1 | AD1 |
| A2 | AD2 |
| A3 | AD3 |
| A4 | AD4/IIC_SCL |
| A5 | AD5/IIC_SDA |
PWR_EXT Setting
Rboard is designed for isolating industrial application with external power supply. So when remove the jumpers on PWR_EXT, use the DC 7-20 terminal to for ATMega328 and all digital circuit power supply, and supply the 5V relay by the PWR_EXT terminal with 5V, there are 2 completely isolated power systems for controller part and relay part.
If you don't need so stringent electrical isolation, put the jumpers on PWR_EXT, then you don't need an extra power supply, the relays will supply by the DC 7-20 terminal the same as controller part - but there also the opto-isolation between the relay and controller I/Os.
Note
The RBoard does not have a USB connection. So you need a USB/Serial adapter - we recommend the Foca FT232RL breakout board.
Specification
| Microcontroller | ATMega328P |
| Max Frequency | 16MHz |
| RAM Capacity | 2K |
| FLASH Capacity | 32K |
| External Resources | Onboard SD socket Electronic Brick Interface |
| Power Supply | External 12V External 24V External 5V External 7V External 9V |
| I/O Operation Level | 3.3V |
| Board Size | 79mm X 106mm |
| Model | IM120618001 |
| Version | 1.0 |
| Weight | 80.00g |
| Accessories | No |
