Much time has passed since I created the first electromagnetic gun for the Robonova RN-1 from Hitec, was time to evolve the concept. The gun had three previous drawbacks, the first was the weight, coil, ammunition, capacitors, the whole robot to the poor to move sweat amp and hold the weapon. The second problem was the charging time, as the battery status even had to wait over a minute to get the voltage needed for a good shot. The last obstacle from electromagnetic gun triumph was the power, steel bearings out fast enough for the scale, but insufficient for my claims. He had time thinking about how to build a small mechanical valve that could release a certain amount of gas and simultaneously be handled by the robot when one day at work I got a good valve capable of withstanding pressures with a fairly small size, I lit the bulb that hangs over his head and did a little test to determine if the idea of using an electric valve for liquids was feasible as a dispenser of gas for a gun, I put a tube and a small aluminum barrel and an old broken gun airsoft. In the video I used a small deposit Car full of gas airsoft, the lightweight plastic balls came at considerable speed, marking the start of the project. The next step was the construction of the gun, I used the lightweight aluminum barrel with rubber balls holding the gun broken, I added a charging system by gravity where the balls are in the top and fall to retract gun, standing ready to fire through the return spring, a basic and reliable enough that the robot can play with one arm movement. Missing was the look to aim and to fire control, so that the next video as well as above I have to soft touches on the button to download the gas, tactfully. I went to the electronics and as always my ignorance and unwillingness to quit the project, until a coworker I lay a hand with that part, we seek a multiplying circuit diagrams for tension and after a few weeks of trials and finally changes got a system capable of converting 3 volts at 25 and also send in a pulse to the valve. With this circuit consumes only 10mA of power was another issue resolved to advance, so adding finished my laser gun, adjustable height and direction, together with a first coat of paint. The storage capacity in the gun is 10 balls of 6mm, airsoft classic, but increasing the height of the reservoir could get a lot more. The current performance of the team for my taste is impressive, with a total weight of only 180 grams, including battery 3-volt lithium and failing to make the backpack to the solenoid and the circuit, the robot can move smoothly and without punishing servos. You can work with any type of gas, sustainable economic and butane lighters does not give much power, airsoft gas with which the balls are thrown at high speed, while biting on impact with the body dressed and even if CO2 he adapts a proper deposit, the current cigarette lighter allows about 25 shots with butane gas and 15 airsoft powerful, adding a cash deposit larger autonomy may rise considerably, and the pulling power to regulate the time of valve opening . Here you can view the latest test video I made, the next time I will not be firing the gun.

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