SofaKng's user avatar
SofaKng's user avatar
SofaKng's user avatar
SofaKng
  • Member for 11 years, 2 months
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5 votes
3 answers
132 views

Smallest connector to substitute DB-25 port? (re: can't fit DB-25 on panel)

4 votes
1 answer
1k views

How do I assemble the mechanical parts of panel mount switch? (lock ring, lock washer, nut, etc)

3 votes
2 answers
250 views

Does resistor placement change power dissipation in simple LED circuit?

3 votes
1 answer
531 views

How to convert arcade RGB video (2-5 V p-p) to VGA (0-0.7 V)?

3 votes
1 answer
725 views

Possible to use Segger J-Link with Intel Quartus to flash FPGA?

3 votes
2 answers
1k views

Can I replace an STM32F105-RBT6 with a STM32F103-RET6? (ie. are they pin compatible?)

2 votes
3 answers
69 views

Infrared Receiver - Simple questions regarding data sheet and basic electronics

2 votes
2 answers
34k views

Can't figure out EIA-232 (RJ45) to DB9 cable... (seems simple!)

2 votes
5 answers
960 views

What is this PCB (IC?) connector called?

2 votes
1 answer
4k views

What is the correct behavior of the HDMI HPD signal?

1 vote
1 answer
633 views

How to safely connect USB to TTL (FTDI) adapter to device and also use bench power supply?

1 vote
1 answer
142 views

Does this circuit look correct to connect DA-15 (Gameport/MIDI) to RPi (MT32Pi)?

1 vote
4 answers
16k views

What gauge wire for 36V (DC), 5A peak?

1 vote
1 answer
198 views

Photodiode showing triangle waves instead of square? (re: need op amp?)

0 votes
1 answer
280 views

Used Fluke 87V multimeter working correctly?

0 votes
1 answer
149 views

Do I always connect all GNDs together between devices?

0 votes
4 answers
321 views

How much current is available with a buck converter? (re: 20V/5A to 5V/20A?)

0 votes
1 answer
528 views

Capture and transmit NTSC with ESP32? (w/video decoder chip)

0 votes
1 answer
8k views

Cleanest way to splice automotive wires in car?

0 votes
3 answers
225 views

Does a transistor change the source of current? (re: esp8266 and infrared transmitter circuit)

0 votes
2 answers
212 views

How can I find a replacement LED to repair RJ45 tester? (re: SMD size, measured with multi-meter)

0 votes
1 answer
81 views

Safe to use both AC and DC with 4 channel relay?

0 votes
3 answers
108 views

Can I substitute SN74LVC1G04 (single inverter) for SN74LS00 (quad inverter)? (re: simple GAMEPORT to MIDI cable?)

0 votes
1 answer
77 views

Standard pin-out for simple 2-segment LED display? (4 pins)

0 votes
1 answer
184 views

How does 5V relay with opto-isolator work? (re: safe to trigger 5V relay with 3.3V isolator)

0 votes
1 answer
91 views

What is needed for a 512Kb HDMI EDID EEPROM? (re: 512KB IC2 EEPROM) [closed]