3
votes
How to power two motors using a single Li-po battery
Your schematic will not work, as required, as motor 2 will always be on.
The following schematic will satisfy your requirement:
Motor 1 is controlled by MOSFET1.
Motor 2 is controlled either by ...
- 14.3k
2
votes
Accepted
How to power two motors using a single Li-po battery
To address your updated question, now you will need to add a diode.
In the schematic you can see that the motors are both connected to the positive of the battery, and low side switching is used to ...
- 12.2k
2
votes
Accepted
Problem with mini sliding gate
Try this. The buttons are powered only if the opposing relay is not latched.
- 166k
1
vote
Problem with mini sliding gate
Pressing S1 latches RL1 putting 5V on the motor'a left terminal. Pressing S2 latches RL2 placing 5V on the right motor terminal without releasing latches RL1. The motor now has 5V one each terminal ...
- 7,611
1
vote
Accepted
How can I unlock two relays at the same time with one push button?
Consider something like the following:
simulate this circuit – Schematic created using CircuitLab
- 8,523
1
vote
How can I unlock two relays at the same time with one push button?
You could connect a normally closed button between the two relay coils and ground. This would de-energize the coils and connect both motor terminals to ground, making it brake.
- 253
1
vote
Accepted
In an AC or DC motor, what force is causing the armature to rotate?
The stator however does seem to have a direction of magnetic flux
flowing across the stator from north to south.
Magnetic flux doesn't actually 'flow' anywhere. The arrows on the flux lines just show ...
- 54.8k
1
vote
MOSFET died when not using a common ground for gate and source
Yes you do need to connect the grounds together.
Q2 is setup as an emitter follower. In that configuration, the output (its emitter) will always be 0.7V below its base, and since the base is at +5V ...
- 16.4k
1
vote
MOSFET died when not using a common ground for gate and source
The IRFI540 is not rated for logic level drive, and is only characterized for 4.5V and above. I think the PWM output of the Arduino is 3.3V, and your emitter follower Q2 lowers the gate drive to about ...
- 5,041
1
vote
DC motor datasheet: dimensions
DIM A and DIM B are going to be variable depending on the shaft length, this will depend on what model of motor/shaft you have. Since there is no information on the manufacturers website, you will ...
- 72.5k
1
vote
Accepted
Charge DC battery with a DC motor?
Yes, it's possible to use a DC motor with permanent magnets as a generator. If its output voltage is sufficiently high, it can charge a battery. But it's also possible to destroy a battery when you ...
- 11.6k
1
vote
Quadrature encoder - Most efficient software implementation
This is a decoder I wrote years back, and have used successfully in many personal and commercial applications.
It is designed to efficiently decode anywhere between 1 and 16 encoder inputs in parallel,...
Only top scored, non community-wiki answers of a minimum length are eligible