Any device with electrical circuits.
Any device with electrical circuits.
Questions tagged [electronics]
89 questions
5
votes
4 answers
Off-the-shelf micro fluid dispenser
Need a way to dispense micro liter amounts of water (lets say 1-10ul). Only thing I've found is piezoelectric dispensers and they are >$100. Any suggestions?
I can build, but preferably would be an off-the-shelf component.
Chris
- 59
- 2
4
votes
1 answer
Why does a motor does not run when a resistor is connected in series between the supply?
I decided to remove the battery (1.6 V 1600 mAh) from my trimmer and to power it via an old mobile charging cable (6 V 800 mAh).
So I built a voltage divider circuit, which gave me nearly 1.6 V but when connecting to the motor, the motor does not…
mythili charan
- 95
- 6
3
votes
2 answers
Magnetometer to measure high angular velocity in small object
I have to measure the frequency of a little circle in rotation. You can image this circle flying in air, because this circle can't touch anything that is not in rotation. So I can't use some simple trick to count the number of complete rotation in…
Dante Alighieri
- 31
- 1
3
votes
1 answer
Filling 30mL bottles with food-grade liquid
A project has been given to me at work, with no schematics or idea of where it was going. I need to fill 5 30ml bottles at a time with a food-grade liquid.
Based on the parts I have, I think the design was going to use a air agitated pressure pot…
user4340
- 31
- 1
1
vote
2 answers
Many to One Bluetooth Communication Link
I have an application that requires data to be streamed from multiple Bluetooth modules to one host controller. Somewhat like multiple Clients and one Server.
The throughput i am looking at is around 1920-bits per second per module.
The…
user2967920
- 399
- 2
- 10
1
vote
1 answer
Dispensing precise quantities of liquid and powder
I've been toying around with the idea of automating the process of testing aquarium water for certain chemicals. Very briefly, salt water aquariums (reefs, specifically) require almost-daily testing for 3-4 chemicals (calcium, alkalinity, ammonia,…
kolosy
- 282
- 1
- 9
1
vote
0 answers
learning (embedded) electronics
I am an aerospace engineer (currently in grad school) and I really want to get into (embedded) electronics.
But I have this problem:
I understand the theory fairly well, I took an edX course in circuits and had no problem. I can build projects from…
ilhan_garou
- 11
- 1
1
vote
2 answers
How to manipulate the magnetic field around a robot?
Nanorobotics can be realized with a combination of a magnetic field and a passive robot. The robot is equal to a tweezer which is controlled by an external field. This field is generated by electromagnetic coils. Even the topic is described in the…
Manuel Rodriguez
- 794
- 3
- 17
0
votes
1 answer
where can i learn electronics from intro to advance digital
I'd like some well put video series of like 30 videos. Or anything but it needs to thorough and in easy English...less mundane. So far all resources i have found either go upto resistors code or of projects that tell you do this and this and this…
Muhammad Umer
- 103
- 2
0
votes
1 answer
Omron G5V-2 relay NO pins not working
I could swear that it was working for a while. I got back to my desk, tried it again, and it's no longer working. Could I have fried the NO pins on both sides? This is a DPDT relay. Everything works normally on the NC pins. I have never applied more…
Puneet Lamba
- 111
- 4
-1
votes
1 answer
How to connect different outputs from one LiPo battery?
I am building a robot. I am going to use ONBO 6S 22000 mAh 25C to power all my controller boards and motors. It needs to power the following items:
1 motor driver (24 V, 6 A);
Microcontroller board (5 V, 6 A);
Vacuum Motor (12 V, 20 A).
Is there…
Daniel
- 11