Particle Effects Card
The Particle Effects Card is an OpenComputers upgrade for computers and Robots to allow them to emit particle effects, in a manner similar to the Minecraft 1.8 Snapshots' /particle command, in exchange for a small amount of energy. If ComputerCraft is also present, the same things can be done by equipping a Turtle with a Firework Star.
|spawn(name, x, y, z[, vx, vy, vz]))
|Spawns a particle at the given x, y, and z relative to the source block.
|name has to be a valid Minecraft particle. You can optionally set vx, vy, and vz for initial x, y, and z velocities.