Questions tagged [parallel-port]
The parallel-port tag has no usage guidance.
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Question about DC pin in USB C module. Is it possible to connect two USB C and Micro USB connectors in parallel to charge the same battery?
Good morning everyone,
I received help from several members of this page regarding my goal of adding a USB-C connector to a tablet that already has a micro USB connector for charging. After ...
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Interface TFT display with STM32 parallel connection
I am searching for an explanation for the coding idiom for changing TFT
display resolution that is used in the PORT from mcufriend’s Arduino code.
...
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Pinout of the 24 pin connector of the P5V0A?
Where can I get the pinout for the P5V04A SUNNY camera 24 pin flex connector used in the raspberry camera module v1.3??
(the pinout of the tiny yellow part on the camera)
I need to know the function ...
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Understanding how TFT driver operates (ILI9486)
I'm trying to understand how to interface TFT driver ILI9486. I'm doing this because I want to control TFT display with PIC microcontroller and not AVR (for which libraries already exist). I own the ...
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Programming an LCD interface with a ST7066U
I am trying to program an interface between my 2x16 LCD and my MSP430FR6989.
The LCD communicates parallelly with the MPU (E RS EW D7 -- D0), and it uses an ST7066U controller IC.
from reading the ...
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Protecting PC parallel port interface when controlling external devices
I need to control two devices with the PC's parallel port simultaneously. To protect the port and provide some sort of a buffering, I thought to use an optocouplers and two ULN2003 Darlington arrays. ...
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Sampling MIDI Via Parallel Port
I'm using an onboard parallel port on an otherwise disused laptop to try and sample the MIDI output of a very old keyboard. MIDI is a serial link at fixed 32 kbit/s, and so far i've managed to connect ...
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Non-inverting output of transistor circuit (at NPN base) is 0.69V max. why?
I tried to make a simple NPN transistor inverter so that I can use the strobe line of the parallel port to store data in two separate flip-flop IC's. (74HC174 and 74HC574) The IC that data will be ...
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How does a USB to DB25 parallel cable work? [closed]
I've been searching for technical information to explain how this works but can't find any info, pinouts, technical reference of any form.
I want to program a parallel port to control a USB device ...
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Are pull-up resistors mandatory for inputs on modern parallel ports?
Here I go again testing more circuits on two computers with each reporting completely different data yet I feed the same data in.
Now this time, the data coming back is all logic highs on my laptop ...
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All possible parallel port IO addresses
I'm trying to figure out the meanings of all the parallel port IO addresses on a PC because I have custom hardware I use with it and I figure if I change a value then my hardware will work.
So far, ...
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Different results for different parallel ports, same circuit. why?
This is my programmer circuit:
I decided to try the HCT version of the nor gate (74HCT02) and I also decided to omit the capacitor to the reset. I selected 10K for all resistors except for reset, I ...
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2
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567
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Can 74HCT buffers work just as well as 74HC buffers between parallel port and target?
I'm making a circuit to program the AT89S52 microcontroller in a serial fashion as follows:
Call me paranoid but this time I'm using resistors on all outputs to the micro as well as RC networks on ...
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Can an array of fuses protect a PC port from damage?
I'm paranoid right now because I made another circuit meant for the parallel port of the PC. While all my previous experiments involving the port were successful (except for one experiment I made a ...
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8051 programmer not working when laptop lid removed despite suggestions in comments
UPDATE
I took a suggestion of disconnecting my external monitor from my laptop and the results were the same. What I did notice however is that the AT89S52 chip always reports the correct signature ...