Morrisl4

Hello,The value 1000 microsecond as minimum and 2000 microsecond as maximum is from page 2 of manual in the control signal section. It stated the throttle is set at zero for 1ms and full at 2ms with 50-60Hz PWM signal. The Arduino servo function that I used takes microseconds so 1ms (millisecond) = 1000 microsecond. hope this helps

Hi,Happy to hear you made it. If the joystick is working in reverse. There are two things you can do. Either reverse the wiring on the joystick or, edit the code. As for the servo motor not working, maybe just change a new one. It is common to have these sg90 motors to come defected out of the box. good work

Hello,With battery swap could be tricky, because it depends on the voltage, capacity, C-rating, and how you connect the them (i.e. series or parallel) to get it right. Your 2000mAh capacity sounds good, so if you think the problem is the current maybe check your C-rating. C-rating is a battery's current rating or the amount of current the battery can provide. You can find it by this formula: C-rate [A] = discharge [C] x Capacity [Ah]hope this helps

Hello,Sometimes it takes a while for the Raspberry Pi to boot up so maybe wait for like 3 to 5 minutes before you scan it. And if that doesn't work you can always delete your SD card and start the process again.hope this helps

Hello,Sorry for replying so late, first thing to check is your wiring of the nrf24l01 to the arduino. Second, thing to check is the code. Make sure this line " const byte address[6] = "00001"; " in the controller code and the tracked car code have the same number. Third, is open the tank's serial monitoring port to find out what values it is getting.I hope google translate this well

You have to disassemble each battery to charge them. DO NOT charge it through Arduino.

The batteries should come with a charger when you order it.

Sorry I don't understand russian...

Hi, there is a rectangular piece coming out of the boat hull. The mast has a rectangular slot. You should be able to press it into the rectangular piece, therefore, mounting the mast to the boat. Sand the rectangular piece down if you can't push it in. But, don't sand it too much because it needs to be tight fit.

Hello, for this project I did not utilize the potentiometers. I use the joysticks to control all the movements of the car, so there is no need to edit the code. The potentiometers are there because I use the same controller for a different project.

Hi, what part of the project are you having trouble with?

You can easily disconnect and remove the Lipo batteries for charging or replacement. Watch the assembly video and you will understand.

Hi, check your message or inbox

The main reason why I separate the power sources is because, when servo motors are switching directions. It can cause the voltage to fluctuate significantly, which is bad for the Pi. Powering multiple servo motors using the Pi's 5V power pin can easily cause a power supply brown-out and mess up the Pi. Plus, sometime I just need Pi to be powered so I can write code. Another benefit is expandability, you can easily scale up this robot by using more powerful servo motors that required higher voltage with the same circuit.

Hi there is a mistake on the schematic of the controller. Toggle switch wiring connection was incorrect. The correct schematic for the controller is now updated check it out. If that doesn't help you can message me.

Ok I saw my mistake on the Wiring Table, So pins 4 & 7 from Uno should go to pins IN3 & IN4 at the Motor Driver. I have made the edits to the steps. Thanks for catching the error!

I used 0.18mm for my layer height

The NRF transmitter has 2.4 GHz and it supports data rate from 250 kbps to 2Mbps. Now I'm gonna be honest here, I am not sure what data rate I am getting but, I know you can set data rate by adding the code: radio.setDataRate(RF24_ 250KBPS); I hope this helps!

Yeah the preview doesn't show the correct image but, if you download it the Drive Gear STL is correct.

No I didn't retrieve it, maybe I need to build an arm that attach to the car to retrieve it...

Yeah the connections for NRF24 could be tricky. I used pin 9, 8, 13, 11, and 12. My pin 8 is connected to CE, this pin can actually be connected to any digital pin. However, pin SCK, MOSI, and MISO has to be connected to 13, 11,and 12.If you are using 9 and 10 as CSN and CE. Then you need to change the Arduino codes. where is has: RF24 radio(8, 9); //CE, CSNchange the two number so it corresponds to your pins.

Hi, in the Arduino code the left potentiometer or variable resistor is used to control the voltage into the motors, therefore, control the rotation of the propellers.

Oh I used B50K on the left and B20K on the right.

Yes the cross horn will fit

Hi, sorry for replying a bit late. The fin is attach to a cross type horn of the servo motor. you should be able to just push them together. if you do not have the same type of horn as my. you can just design a new fin to fit yours. The same thing with the mast and the boat. line up the hole at the bottom of the mast with the rectangular part at the center of the boat and push them together, some sanding might be required to make them fit. Lastly, the motor driver sits in the front the mast and the controller sits behind the mast. Sorry, I don't have any new pictures to explain what I did, because I disassemble my boat to make something else. Hope this helps PS if you have the electronics all setup you can just design a new boat around it. I highly recommend you do that cause is really fu…

Hi, sorry for replying a bit late. The fin is attach to a cross type horn of the servo motor. you should be able to just push them together. if you do not have the same type of horn as my. you can just design a new fin to fit yours. The same thing with the mast and the boat. line up the hole at the bottom of the mast with the rectangular part at the center of the boat and push them together, some sanding might be required to make them fit. Lastly, the motor driver sits in the front the mast and the controller sits behind the mast. Sorry, I don't have any new pictures to explain what I did, because I disassemble my boat to make something else. Hope this helps PS if you have the electronics all setup you can just design a new boat around it. I highly recommend you do that cause is really fun.