Thanks for the answer! I will consider it for a future project I have in mind. And yes I have settle the questions on post 8. The outputs on the receiver are actually 3 low current H-bridges. So I used a 4n35 optocoupler(schematic below). the bjt h-bridge from the attachement is on the receiver.
I thought of using the 7486 X OR, but I'm a little concerned about applying 5v to supply and for inputs,
1. 2.19A each1. What is your Brushed DC Motor's max current rating ?
2. Is it a 12V Motor ?
3. Why not use a H-Bridge IC instead of using Mosfets ?
4. Do you plan to use H-Bridge Driver with PWM input to control the speed of motor ?
Stronger motors, because if I end up add extra stuff to my rover, to turn into a tank, to bring cargo or other robots...1. 2.19A each
3. I would like to build a dual h bridge board to be able to use even for stronger motors I'll be willing to add later.
4. No, because the board is made and mounted and I had/have no idea how to transmit PWM over RF.
The original question was if my h bridge design was ok, I was making wiring errors during simulation on breadboard.What help you need ?
Wow! I would really appreciate all that help I such little time! I think I have a Arduino Uno for the coding.You don't transmit PWM. The remote control will transmit PWM duty value and receiver (robot) will have a micocontroller and it will read the duty value and set the PWM to motors according to it.
MCU will drive FET drivers and FET drivers will drive H-Bridge and H-Bridge(s) Motor(s).
If you want I can design a good circuit and write code for your remote control and also robot driver board.
I need max 2 days to complete the project.
2 Arduinos ? One for Transmitter an done for receiver ? Or Do you need Transreceiver ?Wow! I would really appreciate all that help I such little time! I think I have a Arduino Uno for the coding.
1. I have one Arduino, but I could go ahead and buy another2 Arduinos ? One for Transmitter an done for receiver ? Or Do you need Transreceiver ?
If Arduino, I will use mikroC PRO AVR for coding. Is it ok. I will provide C Code.
I will use FET Driver and MOSFET H-Bridge. I will not use P-Type MOSFET.
Can you use Logic gate Power Mosfet (N-Channel) for H-Bridge ?
Explain how you want your remote control to work ?
Should it have a On/Off and Rev/Fwd switch with a POT to control the duty of the PWM ?
If switches are needed can it be tactile switches or should it be toggle switches ?
A simulation of H-Bridge in Proteus which I made.1. I have one Arduino, but I could go ahead and buy another
2. One for transmitter and for receiver
3. Yes I can use P type mosfet,(irl520), But I have ~6 left, but that shouldn't be a problem.
4. Two ways to work, either to control each track individually like a tank(left would be Ldown Rup)
Or just forward backward and to turn. Which ever is easier.
5. To control the PWM, I was thinking:
- switch to choose between full speed and speed control, and yes a POT to control the speed.
Because I'm not sure if PWM will make the motors turn at their full speed.
I have 2 motors, I'll go take a look at the simulation in a few moments, and ok for the PIC1846K22,
Motors and other components like diodes, etc,... are available locally and they are very cheap. Microcontrollers I buy directly from microchipDirect.com.I have 2 motors, I'll go take a look at the simulation in a few moments, and ok for the PIC1846K22,
How do you find these pieces, where do you go look?
If IR21xx devices are using with 4x N-Channel Mosfets then you cannot have 100% PWM duty. Maybe 95% duty will work.Because I'm not sure if PWM will make the motors turn at their full speed.
2 momentary toogle switches, sorry about thatIf IR21xx devices are using with 4x N-Channel Mosfets then you cannot have 100% PWM duty. Maybe 95% duty will work.
I am now designing the final circuit. Only one PWM will beused,
You did not answer whether you want 2x toggle switches in the remote control to turn On/Off and to change direction to fwd/rev or whether you can go with 2x tactile switches.
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