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user3060854
  • Member for 8 years, 3 months
  • Last seen more than a month ago
  • Thessaloniki, Greece
4 votes
3 answers
7k views

Understanding voltage and current of a phototransistor w/ collector resistor

3 votes
3 answers
18k views

arduino - how to read and control the speed of a 12V - four wire fan?

3 votes
2 answers
3k views

transfer analog signal via RJ45 cable

2 votes
2 answers
226 views

Capacitor charge in an RC circuit

1 vote
1 answer
340 views

multiple MCP4131 potentionmeters with common Slave Select line

1 vote
2 answers
2k views

analog multiplexer CD4051BE

1 vote
1 answer
1k views

how to drive two pairs of DC motors with arduino

1 vote
1 answer
70 views

LED matrix on keyboard

0 votes
1 answer
47 views

Choosing resistors for an LED lighting panel [duplicate]

0 votes
2 answers
4k views

How to initiate Preset and Clear in a JK flip flop?

0 votes
2 answers
2k views

arduino: turn on-off a 12V cpu fan with optocoupler

0 votes
2 answers
1k views

monitor with current leaκage issues

0 votes
1 answer
725 views

what motor driver for servo motor?

0 votes
1 answer
44 views

Uploading sketch with teensyduino

0 votes
1 answer
622 views

Building a keyboard matrix

0 votes
0 answers
88 views

How to connect rows and columns in a keyboard matrix

0 votes
1 answer
170 views

Powering up several teensy boards

0 votes
1 answer
77 views

How to safely use TRRS socket in order to transfer signal

0 votes
0 answers
97 views

Keyboard libraries or simple code?