User Jacob Garby

25 votes

6 answers

5k views

What's the point in a preamp?

amplifier preamp

asked Apr 12, 2019 at 19:47

13 votes

4 answers

3k views

Why put a step-down transformer after a vacuum tube in an a valve amplifier?

amplifier vacuum-tube

asked Sep 17, 2018 at 15:30

11 votes

4 answers

3k views

Why is the RESET pin set up like this in this Z80 schematic?

z80

asked Feb 6, 2019 at 23:44

2 votes

1 answer

2k views

What exactly does the Z80 PIO do?

z80

asked Feb 13, 2019 at 10:01

2 votes

2 answers

7k views

How can I program an Atmega32u4 over USB with this schematic?

microcontroller avr programmer avrdude atmega32u4

asked Feb 28, 2019 at 18:36

1 vote

1 answer

631 views

Issue with programming Atmega32u4 (lfuse memory not accessible using FLIP)

microcontroller avr atmega32u4

asked Mar 1, 2019 at 16:41

1 vote

3 answers

593 views

How to wire up multiple Z80 PIO chips?

z80

asked Feb 20, 2019 at 19:52

1 vote

1 answer

333 views

How does this N-key-rollover work?

keyboard

asked Oct 11, 2018 at 21:34

1 vote

2 answers

420 views

Can I use the internal Atmega32u4 clock for USB applications?

atmega32u4

asked Apr 15, 2019 at 0:34

0 votes

1 answer

272 views

How can I possibly get a 9600Hz square wave, for a serial baud rate?

uart serial parallel baudrate

asked Oct 16, 2019 at 21:07

0 votes

4 answers

205 views

Problem with drawing vector lines on an XY oscilloscope, caused by X and Y being set at slightly different times

microcontroller analog dac

asked Feb 21, 2021 at 19:34

0 votes

1 answer

253 views

Difficulty programming a custom Atmega32u4 board with a snap programmer using ISP

avr programming programmer

asked Jun 14, 2021 at 16:44

0 votes

1 answer

68 views

Unable to correctly send keypresses using the LUFA library

usb avr keyboard lufa

asked Jul 3, 2021 at 2:31

0 votes

1 answer

169 views

Which pins should I connect to program a PIC chip using the SNAP programmer?

pic programming

asked Aug 1, 2021 at 19:22

0 votes

1 answer

103 views

Drone ESC causes motor to twitch and beep when powered and PWM signal applied [closed]

batteries motor pic motor-controller drone

asked Aug 12, 2021 at 16:03

0 votes

3 answers

602 views

What fuse to set to enable 16MHz clock on the atmega32u4

atmega32u4

asked Apr 14, 2019 at 14:06

0 votes

2 answers

100 views

Better way to selectively enable memory chips

ram z80

asked Feb 13, 2019 at 23:32

0 votes

1 answer

220 views

How to control a parallel OLED graphics display [closed]

display dot-matrix-display

asked Feb 24, 2019 at 16:47

0 votes

3 answers

294 views

How did the Commodore 64 keyboard work?

computer-architecture keyboard

asked Mar 2, 2019 at 23:14

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19 Questions

What's the point in a preamp?

Why put a step-down transformer after a vacuum tube in an a valve amplifier?

Why is the RESET pin set up like this in this Z80 schematic?

What exactly does the Z80 PIO do?

How can I program an Atmega32u4 over USB with this schematic?

Issue with programming Atmega32u4 (lfuse memory not accessible using FLIP)

How to wire up multiple Z80 PIO chips?

How does this N-key-rollover work?

Can I use the internal Atmega32u4 clock for USB applications?

How can I possibly get a 9600Hz square wave, for a serial baud rate?

Problem with drawing vector lines on an XY oscilloscope, caused by X and Y being set at slightly different times

Difficulty programming a custom Atmega32u4 board with a snap programmer using ISP

Unable to correctly send keypresses using the LUFA library

Which pins should I connect to program a PIC chip using the SNAP programmer?

Drone ESC causes motor to twitch and beep when powered and PWM signal applied [closed]

What fuse to set to enable 16MHz clock on the atmega32u4

Better way to selectively enable memory chips

How to control a parallel OLED graphics display [closed]

How did the Commodore 64 keyboard work?