Hello people of Robotshop, i would like to ask a technical question right here, sorry if my english it’s not so good, but i’ll try to be the more specific i can.
Im working on a project with a variety of sensors like:
Co2 Sensor
Methane
Proximity
Quality of Air
I’m going to work with Arduino and that sensors i mentioned. But this project or car that i’m going to development is going to work on ground, for being more specific the tittle of my project or the vision is " An automated system for detection of work conditions in subterranean Charcoal mines ", the vision of the project is to recolect information about the levels of Co2 and Methane , because they are the principles reasons of death in the mines either for choking or explosions .
So what i really need is your help here, i need an excellent chassis to make this project come true, i should suppose that it have to work with 4WD, but i’m trying to look which chassis would work better with my vision, i see that Dagu chassis are kinda of expensive ( robotshop.com/productinfo.aspx?pc=RB-Dag-51&lang=en-US ) and they need alot of Battery (Correct me if i’m wrong), ¿ What suggestion can you give me?
I need like the chassis, the battery that works fine with that motors
and the motor drive control for that examples, i would like to have a good examples for you RobotShop, thank you so much for your help
As far as value, the ROMEO is a very good robot controller and includes a full Arduino, a built-in dual motor controller, easy to use pin headers and more. If you were going for Arduino anyway, it’s an excellent choice.
You have two options: one battery for the microcontroller and another battery for the motors, or one battery and one voltage adapter. The microcontroller operates best at 9-12V while the motors operate best at 4.5V to 6V. Consider RB-Hpr-05 for the motors (and servos), and a normal 9V battery for the logic. In addition to RB-Hpr-05, you can also use RB-Onl-12 wiring, and RB-Ten-02 charger.
Most people simply use a normal Alkaline (single use) or NiMh (rechargeable) battery.
The ROMEO has a dual H-bridge can can support two small motors or two pairs of small motors. The servos are connected to the digital pins; you don’t need an extra controller or shield.
Correct; the onboard dual H-bridge can take care of the small motors, while the digital and analog pins take care of the servos and sensors.
Can you give us an idea of your budget for the frame/chassis/motors? How long do you want the robot to last between charges (20min, 30min, 1 hour?). Can you give us an idea of the environment? Is the floor of the coal mine perfectly flat or are there rocks etc? Is there water, lots of dust etc?
For the A4WD1 and A4WD2, each motor consumes roughly 400mA continuous, multiplied by 4 motors, that is 1.6A total. Therefore you need a 12V, 1.6A (or higher) battery. Consider RB-Hpr-06 with RB-Ten-02 as a charger (wiring harness included). The Sabertooth is a good option for motor control.
The 4WD Thumper is intended to be used with a 7.2V sub-C battery pack which we do not offer at this time. The closest options would be the VEX 7.2V, 2000mAh and 7.2V 3000mAh packs with the corresponding charger and wiring harness. The 3000mAh pack would last you longer.
is just perfect but it’s from China, i can do this in your store? will the motors and tires works good with this platform? or the tires will work with the motors of Dfrobot 4wd?
Hello it’s me again, i have to decide for robotshop.com/dfrobot-4wd-arduino-mobile-platform-3.html, so i will expend more money in other things for the car, can you help me to decide which motor controller is best for this chassis that works with arduino 1, i know it suggest romeo but it is the best recommendation? i mean it will work like an arduino 1 and do the good job of a motor controller? can you suggest me batteries for the motors and another for the arduino, i would like this project or the car works for long time. and i would like if you can suggest me a good Ultrasonic sensor with a pan and tilt. Thanks
Can you suggest me a nice battery for the 9v logic, because i read that Arduino its not good with 12 v and 7 . But i cant find it, and im going to make the buy of the products, and another question. If I’m going to use 2 servos for pan and tilt, the romeo its capable to support the 4 dc motors of the chassis, and also the pan and tilt? or i need to add an extra shield for that? because im going to buy the chassis with the romeo, the battery pack that you recommend me, i read that you put motors and servos, but that arduino it’s enough to support that pan and tilt the 4 motors, and plus that 2 sensors for methane and co2? thanks a lot for your answers
