Recent content by mingki

Yes, that's why I will use this waterproof case for my battery packs. I will use 48VDC(12V battery x 4pcs) battery for each motor as below. You are right. I have been searching for water jet but it's so hard to find one with compact size and affordable price. They are just so expensive. I am...

That's a good item. Thank you. I also wanted to use some water jet but I couldn't find any manufacturer. Do you know some water jet product out there in the market that can be applied to my project?

That's right, I need to protect the prop from debris and objects flowing with water. To eliminate prop walk, should I rotate each motor like this to keep the boat going straight?

That's a good point. Yes, there is a great hazard of propeller being a damaging tool. I have been thinking about this for a while and the only solution for this is putting indications on the boat and also use this drone speaker so that the operator could tell the passengers not to come closer...

I see, then could you recommend me some other boat that is feasible for this project? My plan is to develop some RC boat for rescue activity that human can ride or hang on to. This is a preparation for upcoming flood disasters in the summer because there are so many unusual heavy rains these...

Hi thank you so much for your answers. No, I am not dead yet cause I haven't tried a test yet. So, it seems that the design would be feasible for propulsion and steering if I reinforce the boat structure properly. Now, I understand. The propulsion system will enable me to push the boat...

Hi I am installing these motors to the backside of my boat for propulsion and also for steering using dual motor controller. My boat is this. The steering mechanism is like this. The motors are all fixed on my boat and I want to steer the boat by proportionally controlling each motors...

Does anyone know how this golf cart follows its user? (6) CaddyTrek R3 Smart Robotic Electric Golf Cart Bag Caddy with Smart Vision AI Technology - YouTube This is so interesting. I wonder how this thing follows its user based on what tracking reference and what type of vision camera is used...

Thank you very much Dave. That's just what I need. I will study more about that items. Thank you.

The minimum distance is 1m and the maximum distance is hopefully 10m. Less than 10m is also fine. For the accuracy, i don't have a specific target in mind. As long as my electric cart follows me at walking speed (3.5km/h ~ 5km/h), I would be happy. Thank you.

Hi I need to make this electric cart to follow me around at a certain distance which could be adjusted. https://youtu.be/93zouLEdgRQ The video shows remotely controlled electric cart and I want this cart to follow me like the one in the picture below. The robot follows the wearable tracker...

Hi, I am testing my dual motor controller with two BLDC motors(48V, 400W) using this schematic. Unfortunately, I am having some electric noise from relays so I loose connection with my motor controller randomly whenever I turn on and off the motor. The connection lose is irregular. Sometimes...

Yes, I will test them and come back with results. It will take a couple of weeks to get them since all the parts are not available in my country. Thank you for helping me. I appreciate it.

Hi Brian Thank you so much. ok, I will test it by making connections like this.

Hi Brian Thank you so much. Could you advise me how to use that relay module with battleswitch? I tried to draw some diagram of connect them by myself but I am really confused on how to connect these two modules together.