User Ryan Detzel

19 votes

1 answer

9k views

Why do smoke detectors run off 9v batteries?

asked Feb 24, 2015 at 18:50

11 votes

4 answers

3k views

Microcontroller shutting off because of brief loss of power, can a capacitor fix this?

asked Jan 2, 2015 at 19:48

6 votes

3 answers

4k views

Should I step-up or step-down the voltage if I have the option?

asked Feb 15, 2018 at 12:15

6 votes

3 answers

697 views

How can I keep a momentary button low long enough for microcontroller to read it?

asked Feb 24, 2018 at 13:58

5 votes

2 answers

633 views

Why use an external resonator with an ATmega microcontroller if it has one built in? [duplicate]

asked Mar 3, 2015 at 19:12

5 votes

2 answers

3k views

What's the easiest way to solder TSSOP parts?

asked Dec 24, 2014 at 11:46

3 votes

4 answers

2k views

Can I use resistors/capacitors to delay when a circuit turns on?

asked Apr 10, 2018 at 11:58

2 votes

3 answers

575 views

Controlling 13 outputs with a mcp23017 or 74hc595 and two uln2003?

asked Apr 9, 2018 at 12:12

2 votes

1 answer

280 views

What kind of external components would be required to use a MEAN WELL IRM-03-3.3 power supply?

asked Jan 9 at 13:34

2 votes

5 answers

1k views

Best way to get 256 io pins?

asked Dec 24, 2014 at 19:49

2 votes

1 answer

147 views

How do battery powered thermostats with LCD screens run for so long?

asked Feb 27, 2015 at 14:03

2 votes

4 answers

3k views

Why can't the atmega328p accept 5 and 3.3v signals at the same time?

asked Mar 8, 2015 at 21:16

1 vote

2 answers

2k views

Best way to regulate 9/12v down to 5v and 3.3v

asked Mar 9, 2015 at 12:30

1 vote

1 answer

60 views

Is it better to make multiple small i2c requests or one larger one?

asked Feb 16, 2018 at 18:53

1 vote

2 answers

1k views

Measure speed of slot car

asked Dec 23, 2014 at 1:22

0 votes

2 answers

64 views

Identifying multipleDC trains on the same track?

asked Dec 23, 2014 at 12:05

0 votes

4 answers

1k views

Am I reading my multimeter correctly?

asked Mar 1, 2015 at 19:11

0 votes

2 answers

2k views

How to stop my motor from resetting my microcontroller?

asked Jan 4, 2015 at 16:27

0 votes

1 answer

292 views

What do the 47k resistors and 10k resistors do in this circuit?

asked Mar 4, 2018 at 11:56

0 votes

2 answers

43 views

What's the max current of a power adapter that's rated at 24V Max 7W if I regulate it down to 3.3v?

asked Mar 26, 2018 at 21:43

0 votes

1 answer

123 views

Using a delay circuit to keep track of button presses

asked Mar 17, 2017 at 13:00

0 votes

1 answer

125 views

Options for powering 5 V from 24 V AC relay switch

asked Oct 9, 2018 at 12:00

0 votes

1 answer

68 views

Weird level shifting issue only when connected to IC chip

asked Oct 25, 2018 at 12:28

0 votes

0 answers

622 views

Convert momentary button to toggle switch?

asked Jan 21, 2019 at 16:09

0 votes

1 answer

92 views

Would the low voltage of lithium ion batteries in series be just the number in series times the cutoff voltage for a single battery?

asked Nov 8, 2021 at 18:56

Stack Exchange Network

25 Questions

Why do smoke detectors run off 9v batteries?

Microcontroller shutting off because of brief loss of power, can a capacitor fix this?

Should I step-up or step-down the voltage if I have the option?

How can I keep a momentary button low long enough for microcontroller to read it?

Why use an external resonator with an ATmega microcontroller if it has one built in? [duplicate]

What's the easiest way to solder TSSOP parts?

Can I use resistors/capacitors to delay when a circuit turns on?

Controlling 13 outputs with a mcp23017 or 74hc595 and two uln2003?

What kind of external components would be required to use a MEAN WELL IRM-03-3.3 power supply?

Best way to get 256 io pins?

How do battery powered thermostats with LCD screens run for so long?

Why can't the atmega328p accept 5 and 3.3v signals at the same time?

Best way to regulate 9/12v down to 5v and 3.3v

Is it better to make multiple small i2c requests or one larger one?

Measure speed of slot car

Identifying multipleDC trains on the same track?

Am I reading my multimeter correctly?

How to stop my motor from resetting my microcontroller?

What do the 47k resistors and 10k resistors do in this circuit?

What's the max current of a power adapter that's rated at 24V Max 7W if I regulate it down to 3.3v?

Using a delay circuit to keep track of button presses

Options for powering 5 V from 24 V AC relay switch

Weird level shifting issue only when connected to IC chip

Convert momentary button to toggle switch?

Would the low voltage of lithium ion batteries in series be just the number in series times the cutoff voltage for a single battery?