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Zuofu
  • Member for 9 years, 4 months
  • Last seen more than a month ago
27 votes

What is this suspicious stain under a VFD's glass?

15 votes
Accepted

Can anybody identify this component (SPRAGUE 663044-4) on this vintage electronic?

13 votes
Accepted

2N2222A Mismatch between emitter and collector

11 votes
Accepted

Servo does not stop in a stable position

10 votes
Accepted

Laying out a 10-pin JTAG/SWD connector on a final design

9 votes

Resistor and Capacitor Package types Eagle CAD

9 votes
Accepted

What are the contact pads near the ATmega32 chip on the Arduino Yun?

8 votes

Sending data from PC to micro-controller

8 votes
Accepted

How to deal with LFBGA217 package when building prototype boards by hand

7 votes
Accepted

Does an SD card in SPI mode respect chip select/slave select? Seems to be resetting in my application

7 votes

Interfacing with SATA in embedded systems

6 votes

Multimeter experiment with 10A setting -- what happened?

6 votes

Detecting air flow in a room

6 votes
Accepted

Can I use math functions in PIC16F877A code?

5 votes
Accepted

Protection against audio output shorting

5 votes
Accepted

Control the hardware of an old phone using a Raspberry PI

4 votes
Accepted

Eagle Cad - redefining terminals of a component

4 votes

Is it possible to turn an audio signal ON/OFF using a solid state relay?

4 votes

Is there any reason why using a baud rate of 31250 on an Arduino MIDI project could cause problems?

4 votes
Accepted

Does the LPC1343 MCU need an external clock for USB operation?

4 votes
Accepted

Why does moving the imaginary (\$i\$/\$j\$) component in the capacitor element of a transfer function to the numerator flip the coefficient's sign?

4 votes
Accepted

What is the audio voltage of an android phone?

4 votes
Accepted

MATLAB - FFT aliases occur sooner than expected

4 votes

Maximum rotation speed for a potentiometer?

4 votes
Accepted

How does the RC time constant affect behavior of a passive integrator/differentiator?

3 votes
Accepted

Which Amplifier Should I Use After my DAC (what are I am doing wrong)?

3 votes

Output clock of the LPC1768?

3 votes
Accepted

Are large electrolytic capacitors necessary in a servo system that doesn't need to be precise

3 votes

What kind of RGB LEDs are these?

3 votes
Accepted

OLED 128 x 32 SSD1306 display problem (picture inside)