Sting, the robot wasp.

This is a video of the development process for this little robotic wasp, called Sting. It's sort of a character in the novel I'm writing, along with its cousin Spike and half brother Mr Shrimpsley (Later renamed the VCR - Vacuum Combat Robot)
Here's an excerpt from my novel, feel free to ask any questions that may arise:

A loud cheer emanated from the crowd. Black and the General looked towards the mid-air robot wrestling match. One of the little bugs was limping round with one of its wings hanging by a thread. It was Cassandra's robot, Sting.
“They're vicious,” said Black.
“Fun isn't it,” said an officer floating by them. “I mean, sir.”
“At ease, lieutenant. We're here for the fight, just as you are.”
“Thank you, sir.”
River's robot, Spike, appeared to have the advantage, taking a moment to aim its lasers at its crippled foe. With the rules they were playing by, a sustained hit on one part of the robot's light sensitive skin for two seconds would kill that section. If it was the head, abdomen, or any of the limbs, it would become paralysed, deactivating that section. If the thorax was hit for two seconds, that was game over. Just before Spike fired, Sting jettisoned its damaged wing and pushed itself sideways with the remaining three, dodging all but the first fraction of a second. Spike almost looked disappointed, it dived on Sting, deciding it needed to do more melee damage before it could sit back and laser its way to victory.
“That's a new trick.” said River.
“Yeah, I've got to keep you guessing.”
“But he can't win with three wings. Spike's bound to out-manoeuvre him, and Spike almost always wins when he gets a good grip.”
“I wouldn't be so sure about that.”
Spike chased Sting on a wild course around the open space of the cargo bay. Most people couldn't keep up with their speed and looked at one of the holographic screens which kept them in the centre of the shot and replayed key scenes mid battle at either River or Cassandra's will. Spike managed to force Sting into a corner, still going at ten metres per second. There would be no where to turn around so the only option would be to stop. But Sting didn't stop. It ploughed into the corner at full speed, bouncing off, apparently unscathed. With its velocity maintained, though reversed, it took Sting completely off guard, forcing the point on the tail, for which he was named, straight through the other robot's abdomen. The pair stopped, linked in the air, their momentums having been equal and opposite. They both twisted in the air trying to slash the other's wings while keeping its own safe.
Suddenly the mad, high speed chase around the bay had turned into a battle of strength, as they wrestled while drifting across the cargo bay. Red lines of lasers passed through the air, as they tried in vain to hit the other with their ranged weapons. Spike's strength waned as the electrolyte bled from the batteries in his abdomen. Sting pulled out his stinger, allowing him to move freely across the other robot. With minimal resistance he plunged his sharp mandibles into the soft connective parts at the base of the wings and legs, completely immobilising his opponent. They drifted apart and Sting turned around, took aim, and fired all four lasers into Spike's chest for ten seconds.
A minority in the crowd cheered, but most people had favored Spike as the winner. The holographic barrier vanished, showing it was safe to move forwards and see the combatants up close. Nobody wanted to move first, all of them had learned a little fear for robots in the last few minutes. River and Cassandra pushed away from the far wall directly towards their own robots, with surprising accuracy for what looked like an ordinary launch.
Sting grabbed its jetsome and flew to its master, while Spike could only look forlornly at River, waiting to be repaired.
To the General's surprise Black was the first to step through the now imaginary barrier. His feelings for River must be stronger than his fear of robots.

Xenos explorer and Corvettes

I am delighted to declare that he ship in this video was one of two runners up in a 3dvia competition to build a starship.
http://www.3dvia.com/blog/3dvia-challenge-16-champions/

Here's my full description of both ships:

The larger of these two is a 3km long xenos explorer ship. The xenos are peaceful herbivores, so they don't like to build ships specifically for combat, but since they were forced into a major war they had to build combat vessels. The smaller ship along side is the corvette you may have seen in isolation as a previous model of mine, it is about 100m long.

The explorer ship is powered by a battery of fusion reactors. The Deuterium and Tritium fuel for the reactors is collected from space by the large dish at the front of the vessel, any excess can be stored in the external tanks clustered near the back of the ship. It is propelled by a single high speed plasma jet with two stage acceleration and energisation. You can think of this as a jet engine with an afterburner.
For defence it is covered with field dishes, these can apply a remote force to enemy and allied projectiles to turn them towards the enemy ships. These take the form of the small dishes, which can be extended on flexible arms, spread around the centrifugal gravity cylinder and on the exoskeleton.
Just aft of the main habitation area are eight bays, each of which is capable of carrying one corvette.

The corvette is powered by a fusion reactor, but cannot use its main field dish to collector so it needs to store all its fuel in the external tanks.
The corvette has a large main engine for straight line acceleration as well as four smaller engine modules for manoeuvring, these are located on arms to give a strong turning moment with relatively low force.
It's main weapon is a forward facing field dish with a single projectile gun aimed through the centre. It also has four smaller field dishes which can be used to manipulated enemy ships and projectiles, they can also be used for propulsion by pushing or pulling against larger ships of celestial bodies.

I look forward to reading any comments or questions you may have, and addressing them if applicable. (If you ask a question make sure you check subscribe to comments, so you'll see my reply.)