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user3060854's user avatar
user3060854's user avatar
user3060854
  • Member for 10 years
  • Last seen more than 2 years ago
  • Thessaloniki, Greece
3 votes
3 answers
21k views

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

5 votes
3 answers
9k views

Understanding voltage and current of a phototransistor w/ collector resistor

0 votes
2 answers
5k views

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

3 votes
2 answers
3k views

transfer analog signal via RJ45 cable

0 votes
2 answers
3k views

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

1 vote
2 answers
2k views

analog multiplexer CD4051BE

0 votes
1 answer
1k views

Building a keyboard matrix

1 vote
1 answer
1k views

how to drive two pairs of DC motors with arduino

0 votes
2 answers
1k views

monitor with current leaκage issues

0 votes
1 answer
766 views

what motor driver for servo motor?

1 vote
1 answer
392 views

multiple MCP4131 potentionmeters with common Slave Select line

0 votes
1 answer
324 views

How to safely use TRRS socket in order to transfer signal

2 votes
2 answers
254 views

Capacitor charge in an RC circuit

0 votes
1 answer
235 views

Powering up several teensy boards

0 votes
0 answers
212 views

How to connect rows and columns in a keyboard matrix

1 vote
1 answer
199 views

LED matrix on keyboard

0 votes
0 answers
151 views

Keyboard libraries or simple code?

0 votes
1 answer
63 views

Uploading sketch with teensyduino

0 votes
1 answer
56 views

Choosing resistors for an LED lighting panel [duplicate]