This is relay board with 8 relays RAS-12-15. It is controlled via USB protocol. The main purpouse of this relay board is to help you building projects regarding robotics and automatics. You may control differenet electrical devices like DC motors, pneumatic cylinders, lasers and so on. There is free software example. Hints for creating user application in different platforms (Visual C++, Borland C++ Builder, Visual Basic and so on) are provided. Each such board require one USB port. The more USB ports you have the more Relay boards you may connect. May be used by lovers and professionals.

Specification

• 8 Relays RAS-12-15. Datasheet - here
• Relay specification - 12V / 30mA, 15A/24VDC (120VAC), 10A/250VAC
• Power Supply - 12 V
• Current consumption - 300 mA
• Communication - USB
• FT245RL. Datasheet - here
• Green led for each relay output
• PCB specification - FR4 / 1.5mm / two layers / metallized holes / HAL / white stamp / solder mask
• Size - 106mm / 78mm / 16mm

Communication with the board

Each such board is shown as separate virtual com port (VCP) on your PC. The relay board outputs are controlled by FT245RL. It has 8 bit data output register. When data is sent to the register the outputs are set. Be sure "Asynchronous Bit-Bang Mode" is selected! FTDI provides Bit-Bang Mode documentation. See this.

Free software example

Here

Helpfull links

• FTDI drivers page - here
• FTDI web page - here
• FT245RL page - here
• Programming guide for FT245RL - here
• FT245RL Bit Bang Mode - here

Price - 54 USD