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Library for FT232R controlled relay boards

Project Description

PyRelayCtl is a library to control FTDI FT245R based relay boards. This includes the SainSmart 4-channel 5V USB relay board. The outlets can be switched on and off via USB.

The library depends on PyUSB (

On Debian PyUSB can be installed using:

apt-get install python3-usb

Per default, only root is allowed to use devices directly, therefore the library also only works as root.

To allow group relayctl access create file /lib/udev/rules.d/60-relayctl.rules with the following content:

SUBSYSTEM=="usb", ATTR{idVendor}=="0403", ATTR{idProduct}=="6001", GROUP="relayctl", MODE="660"

Then reload the udev rules with:

udevadm control --reload-rules

Release History

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Source None Jul 27, 2016

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