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Sponge Bob
  • Member for 10 years
  • Last seen more than 5 years ago
  • United States
121 votes
7 answers
240k views

Why does micro USB 2.0 have 5 pins, when the A-type only has 4?

31 votes
2 answers
89k views

What are the differences between USB and RS232?

31 votes
2 answers
38k views

Should I use lead free solder?

29 votes
5 answers
84k views

Standard wire colors

20 votes
2 answers
39k views

Will crimped wire or soldered wire carry a current better?

19 votes
2 answers
52k views

What wattage should a headphone amp be?

15 votes
5 answers
32k views

Why are high end audio connections gold?

12 votes
2 answers
55k views

How do LED light bulbs work?

11 votes
5 answers
84k views

Does higher dBi mean further range, for an antenna?

11 votes
3 answers
91k views

What should the voltage of a fully charged lead acid battery be?

10 votes
2 answers
27k views

Can I charge a 12v sealed lead acid with an old wall-wart (not made for charging)?

10 votes
3 answers
4k views

Using SPST switch as digital input?

8 votes
1 answer
1k views

Why do batteries not last as long in a cold environment?

8 votes
1 answer
7k views

How to make a balanced battery pack?

7 votes
2 answers
15k views

What is RTS and CTS flow control?

7 votes
1 answer
2k views

power cable: more strands, or bigger strands?

7 votes
1 answer
686 views

What are the advantages of having USB part of the microcontroller (as the Leonardo does)?

7 votes
2 answers
1k views

Does Arduino use step down voltage regulators?

6 votes
2 answers
2k views

How can I distinguish between a clone and a real Arduino?

6 votes
3 answers
2k views

How can I create a serial bridge using two Bluetooth dongles?

6 votes
2 answers
406 views

Why do some wires in my turntable have plastic covers over them?

6 votes
3 answers
2k views

How to use PNP transistor as a switch for serial communication

5 votes
6 answers
3k views

Use UART Tx as digital output?

5 votes
1 answer
23k views

What's the max discharge (in "C") of a Pb-acid and LiFePO4 (lithium iron phosphate)?

5 votes
1 answer
6k views

How does contact cleaner work?

5 votes
3 answers
896 views

Alkaline "% full" from voltage?

5 votes
2 answers
932 views

Why does my SSD have an FCC logo on it?

5 votes
3 answers
17k views

If a wire is rated 10A, 120v AC. How many amps could I put through it of 13.8v DC?

4 votes
6 answers
9k views

Shielded vs Twisted cables

4 votes
3 answers
6k views

Are sealed lead acid batteries water-resistant?