Hovercraft Revision 2

For revision 2, I use 3x 1104 4300KV brushless motor, two motors (CW and CCW) use to provide lift and one motor to provide thrust. Two motors with opposite rotation should cancel out the inertia and preventing it from spinning. Total weight 49 gram without 3" propeller.


This is comparison between Revision 1 and 2. Revision 1 is smaller but wider compare to revision 2. As you can see from the photo, I did try this 1104 motor with 3" propeller but it still spin 😭. I connected each motor to different channel so that I can adjust the RPM individually. I wonder if I should make the body less square, at least more curve at the front 😅.  I use smaller receiver, RF-Nano (10 grams) and 2S 500mA battery (34 gram).


I does not spin 😆, ok maybe a bit 😝 but that can be manually adjust by adjusting the front or back motor RPM 😉. I just need to add pusher motor and rudder. 

Unfortunately my flat is to small to try it out, it can only go straight before hitting the wall.











Comments

Post a Comment

Popular posts from this blog

Building RC Plane Under 250 grams (Part 1)

Image
Building RC plane is not easy, choosing brushless motor is already very confusing. There are so many parameter need to consider (motor size, motor weight, propeller size, battery size, etc) 😵   In the end, I asked ChatGPT 😂, I summaries ChatGPT answer on the table below. In conclusion, to be able to fly without license, I need to built something under 250 grams. Based on the table, 2212 that I bought is suitable for 300 grams and above. I bought the wrong motor, waste money 😡, should asked ChatGPT earlier, part of learning 😑. I took measurement on components that I have in hand using kitchen scale 2212 motor = 61.21 grams 30A ESC = 25.59 grams Receiver = 30.20 grams 3x servo = 31.95 grams 2x 18650 battery = 100++ grams Total 248.95 grams excluding the airframe 😭. I ask my good friend ChatGPT to recommend RC plane design with target weight of 200 grams (keep 50 grams for margin) and the answer: Wingspan: 60-80 cm (100 grams) Motor 1806 or 2204 (15-25 grams) ESC: 10A - 20A ...
Read more

Arduino Nano clone (fake FT232RL)

Image
Couple weeks ago, out of curiosity, I just bought Arduino Nano from Aliexpress. I saw it was on sale for S$1.39 (tax included). Arduino Nano with USB=C cable for S$1.39 is very-very cheap 😊, other shop sell at around S$3+ (at this time I did not know it was clone). After about 2 weeks of waiting, it is finally arrived. This thing is tiny, measured around 1.7 x 4.3 cm. Looking at the soldering are good and clean, I'm pretty happy with the product. 😊 I download the IDE 2.3.2 software from official Arduino website ( https://www.arduino.cc/en/software ). This is the time I realize it is a clone because the original Arduino Nano price at US$21.17 🤯 from the official website. With the price different, there is no way I bough the original 😂. I'm trying to share my first experience experimenting with Arduino Nano because it is not a smooth sail, although with the help of google search, I manage to overcome it😉. First of all , you need internet connection when open IDE software for...
Read more

A2212/5T 2450KV

Image
I wanted to post screen capture of the motor that I bought, just for personal note. Otherwise I most likely forgot the specification in a week time or less. There is no particular reason why I choose this motor, it just happen to see a bundle deal "Brushless motor + ESC" for S$10 😂. Many of specification mention are confusing, I have no idea what it mean 😛. After some googling: A2212/5T: 22 is the stator diameter in mm, 12 is stator height in mm. 5T is the number of turn per pole. Its the inner core size, not the outer motor size KV: RPM per Volt, 2450KV = 2450 RPM when supply with 1 Volt Max Current 12A/60S: mean can operate at 12A for maximum 60 seconds before it melt, maybe 😱 Load Current 25.2A: The maximum current the motor winding are designed to draw under specific conditions Max current = 12A/60S and load current = 25.2A, does it mean at max load the motor will burn? Why the load current is greater than max current? How do I choose battery to run this motor? Do I ne...
Read more