Digital Design

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Digital circuit and logic questions (ie. Logic, Gates, I2C, USB, 555 Timer, etc.)
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B
SD Mux
Last message by
Bb.mozart
2
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687
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Newb and need help designing a pcb with 16 Melexis MLX90395 sensors using I2C communication
Last message by
MisterBill2
2
21
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1K
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J
Correct LOGIC circuit?
Last message by
panic mode
2 3
40
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3K
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q12x
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Is there another logic IC, similar with 4017 but with up/down counting? (not only up)
Last message by
hrs
2 3 4
62
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5K
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R
Can I have 2 usb to serial bridges talk usb to each other on pcb?
Last message by
Jon Chandler
6
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504
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R
turning on a mosfet with an and gate output
Last message by
Ian0
15
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912
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S
PNP & NPN transistor resistor setup
Last message by
WBahn
2
24
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2K
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L
Using a phototransistor for a lux detection on raspberry pi 4/5 using only passive components
Last message by
DickCappels
2
27
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3K
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R
Use of diodes in digital circuits
Last message by
MrChips
15
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833
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BenGrimaldi
Can Someone Help Me with This paltry 555 Timer Related Dilemma?
Last message by
sghioto
15
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1K
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8
Convert Sine Wave To 5 Volt Square Wave
Last message by
Ian0
2
20
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2K
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R
R and S inputs on the 47xx74 Dual D flip-flop chips
Last message by
WBahn
4
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575
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C
ESP32 with CP2102N Help.
Last message by
cooke86
3
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1K
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C
Tiny Tv Circuit Board
Last message by
sghioto
18
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1K
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BobaMosfet
Input Circuit For A 0 To 30 MHz Frequency Counter
Last message by
MisterBill2
6
Replies
939
Views
K
NE555, CD4017, and ULN2004
Last message by
sghioto
16
Replies
1K
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FranciscoB
Where can I safely place a physical momentary button to turn on this mosfet?
Last message by
FranciscoB
16
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1K
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K
Positive trigger a 555 timer that will trigger a relay for 20 mins.
Last message by
AnalogKid
7
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979
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S
0 To 6 Counting Circuit
Last message by
MisterBill2
14
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1K
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A
Help with designing a circuit (LED 7 segment display)
Last message by
MisterBill2
8
Replies
1K
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