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SIM cards believe it or not come in 4 sizes  SIM Card  - Not used any more; about the size of a credit card. Mini-SIM Card  - The most common in the previous generation, it's what most people would call a SIM card. Micro-SIM Card  - The now standard for smartphones; much smaller; just about contains the contacts on the back. Nano-SIM Card  - I've only seen it used so far in Apple iPhones, but I'm sure it will catch on; this is literally just the contacts. Step 1: Get a Sim Card + Scissors No matter what size, I think most of you will have the Mini SIM Card and will want to cut that down to a micro-SIM card but a Nano SIM is also possible. Step 2: Download This Page and Print This is a link to a page  from a UK mobile network that gives you the guide on how to cut your SIM down to size. Step 3: Mark Up and Start Cutting Obviously be careful when cutting, you will want to follow the guide exactly. You will see the actual memory of t...

I would advise using a prop with 2 blades rather than 3 as it would be more efficient due to airflow. Also what transmitter are you using? aalejo its too heavy and the source will be 500mah jesus make it 5000 or 10000 9volts to make it up in the air longer and more trust and make trust me will do the work naja452 I don't think you have ever built or flown a multirotor, This thing probably weighs half as much as a 5Ah battery, he might be able to double the battery but thats it. .5Ah will work fine. aalejo   i make one but i use a motor a dvd rom i try it with some microcontroller and some for bluetooth mech is been working and pretty enough to much power its to much trust and its much better ke4cpc A lot of Acronyms, please provide a glossary or a link, if possible. I'd like to try and make something like this with my two 11 year olds. I_build_cool_stuff ESC = electric speed controller...