All Questions
15
questions
0
votes
2
answers
88
views
Can I safely operate a DC motor at 40% higher voltage than nominal?
I'm aware that you can power a wound motor (DC or even stepper) if you limit the current inside the coils. You cannot just apply a higher DC voltage to them.
I'm using a DRV8871 to control a VN-C1 ...
- 1,235
0
votes
1
answer
94
views
Why is my LiPo battery limiting its voltage when I turn on my DC motor circuit?
I have a circuit that is supposed to run four 12 V DC motors with built-in motor drivers off of one LiPo battery. The LiPo battery (single cell 3.7 V) is boosted to 12 V (the converter circuit is ...
1
vote
1
answer
444
views
How to prevent a battery powered microcontroller(ESP32) from reseting when motors start running?
I am working on a brushed motor quadcopter. It is powered by a 3.7V LiPo Battery. I have an ESP32 microcontroller which sends PPM signal to a SP Racing F3 EVO Brushed flight controller. The 3.3V to ...
- 75
0
votes
1
answer
158
views
Help with LiPo/solar panel/motor circuit
For a school project I am working on, we have been instructed to use the following circuit design:
If you can't see the image, here's the general idea:
The solar panel connects to battery via SW2.
...
1
vote
2
answers
127
views
What kind of battery to choose for my electrical car project
I hope that this is the right place to ask this.
I have a small RC car that I opened and added a raspberry pi in.
Now I want to pick a battery. First of all I heard that Lipo batteries are really ...
3
votes
1
answer
664
views
PWM as a voltage regulator for 12V wiper motors and 14.8V LiPo
I'm using 12V (~40W) car wipers motors for small robotic project. Motors are driven over MOSFET H-bridge (IRF1405/IRF4905) with PWM speed/power regulation. Currently a voltage source for motors is a ...
- 31
0
votes
1
answer
456
views
Powering a RPi and a motor driver with the same LiPo battery
I have a 2-cell LiPo battery, a RPi3, and a motor driver with 2 DC motors. I wanted to use the same LiPo for both, instead of a LiPo for the driver, and a Power Bank for the RPi3.
My idea was to use ...
- 103
1
vote
1
answer
136
views
DC Motor Theory and Practice
My first post here, I have been playing with a DC motor and attempting to upgrade the original batteries from SLA to Lipo, the scenario is as below and i'm looking for some advice on what happened and ...
-1
votes
2
answers
276
views
Beard trimmer powered by LiPo battery [closed]
I'm trying to convert a beard trimmer's motor to run on LiPo battery instead of original Ni-Mh AAA size battery.
It occurred to me as simple DIY project, but it turns out that's not the case.
...
0
votes
3
answers
305
views
What H-bridge do I need for my setup?
For a home pet project I want to wire up an electro motor to a Raspberry Pi. I want to constantly reverse the direction of the motor (meaning I want to be able to change the direction of the motor ...
- 485
0
votes
1
answer
1k
views
Avoid voltage drop on DC motor start-up with h-bridge
I'm trying to control a 12V DC brushed motor (4A with load ) with an H-bridge , TLE5205 datasheet ( 5A , 6A peak , 40V , integrated free-Wheeling diodes ), but when using a 3S1P lipo battery ( 11.1V , ...
1
vote
2
answers
151
views
Choosing the right LiPo Battery
I have a project that has 14 DC motors, 8 of them have 6A nominal current the rest requires 5A. I'm thinking of using 12 LiPo batteries each 5000mAh, 30C~40C, connected in parallel so that total I'd ...
1
vote
1
answer
507
views
Powering an iComSat GSM Shield and a Gear Motor with LiPo Battery
I have an iComSat GSM Arduino Shield (based on the sim900) and a gear motor that I am planning on using with a Teensy 3.1 microcontroller. I'd like to power the whole rig using a 2000mAh LiPo Battery ...
- 1,420
2
votes
2
answers
875
views
Motor Control System for LGB Trains
I am currently experimenting with some motor control circuitry for my garden train. I have spent several time trying to read up on the basics of motor control, and I have also done some prototyping. I ...
- 123
2
votes
2
answers
4k
views
How can I use arduino to control 4 motors speed and direction?
I consider this question different from others because of the variety of things I need this setup to be able to do.
Description:
I want to build a minimalistic motor controller capable of controlling ...
- 133