Podcast #128: We chat with Kent C Dodds about why he loves React and discuss what life was like in the dark days before Git. Listen now.

Questions tagged [interface]

An interface defines clear boundaries and communication/interconnection between systems.

Filter by
Sorted by
Tagged with
6
votes
1answer
702 views

Why are contacts missing on some of these M.2 modules?

I want to replace a preinstalled Qualcomm Atheros WiFi/Bluetooth M.2 2230 card on my motherboard (ASUS Maximus VIII Impact) with another that has better driver support. This is what the card I want to ...
0
votes
1answer
124 views

do two I/O microcontroller pins that are connected to each other require an external resistor?

I'm trying to make two atmel AT89C2051's communicate with each other serially but the serial ports on either won't be available because one serial port on one chip connects to the computer and the ...
1
vote
1answer
79 views

Microcontroller Interface IC

I am planning to communicate from my dsPIC33FJ64GS608 Microcontroller with a HEF4894B IC. Because of the Microcontroller is running at 3.3V I want to drive the IC also with 3.3V. According to the data ...
0
votes
1answer
250 views

MicroSD memory Card to USB

I am searching for a circuit or any technical documentation or interfacing IC to design the MicroSD memory card to USB. I am very well aware of Adapter available in ...
1
vote
2answers
202 views

Why are most parallel interfaces half-duplex and serial full-duplex? [closed]

I know what is difference between parallel and serial interface. I know also what does it mean half/full duplex. However, I don't know why most parallel interfaces are half-duplex, and most of serial ...
1
vote
1answer
801 views

LPDDR2 reference design?

I've been trying to interface LPDDR2 ram with my SOC but got confused as to how to connect the CA lines. Does anyone have any reference designs of LPDDR2 for me to go off of?
0
votes
1answer
106 views

Level shifter to Interface Microcontroller A/D channel

I need to interface speed monitoring signal to Micro controller A/D channel . I am measuring speed by Electro Magnetic method.The frequency range is 100 HZ to 600 HZ and Amplitude is +/- 2V to 4V (...
8
votes
1answer
641 views

When would AXI4Lite be a better choice than the APB bus?

I'm working on improving and cleaning up an already functional large FPGA design that has a 64 bit data bus. One of the questions that came up is, "should we transition all of our busses to ...
-2
votes
1answer
125 views

floppy drive try to read directory and fail [closed]

Equipment: NFA HP/Agilent/Keysight N8973A With 3.5 floppy disk drive I replaced by an emulator and the result is "bad or missing disk" after a trying to read the directory. Reinstalling the original ...
1
vote
1answer
407 views

lpddr2 interface differences between different memory controllers?

The way LPDDR2 connections are done with CA bus is different between these two processors. I thought since LPDDR2 is a JEDEC standard, these schematics should be interfacing with the same lines from ...
0
votes
1answer
254 views

Pulling RGB24 signal out directly instead of LVDS interface

I am designing a display driver board. I have used a HDMI receiver ADV7619 for the same, I am using HDMI input to my board coming from PC. This receiver has RGB and YCrCb signal out. I have already ...
5
votes
2answers
143 views

What is the electrical benefit of keeping a running disparity on a bus?

I've always been taught that an interface with no DC offset (the same amount of 1s and 0s when averaged over time) is desirable. To this end, often encodings like 8b10b will include a running ...
0
votes
1answer
430 views

level shifting high speed signals

I have a host of differential signals from a board thats 3.3V. Now, I need to interface it to a board that can accept 2.5V. Now, is it possible to use a standard level shifter like this ? Is there ...
0
votes
1answer
80 views

MULTICOMP MCAK304NBWB KEYPAD: What are the pins 8 and 9 connected to?

According to the datasheet, the 7 pins are from the 4 rows and 3 columns. What are the other 2 pins connected to ? The image shows 9 pin outs.
3
votes
2answers
259 views

Logic family for 3.3 V microcontroller interface

I need to generate a bunch of chip selects for a SPI bus that I want to use on a project. I will use a 36 position (similar to PCIExpress = cheap) card edge connector and etc. The bus is simple : <...
-3
votes
2answers
396 views

How can I learn interfacing Microcontrollers? [closed]

My study field was computer and I'm newbie in electronics. so sorry if my question is very simple or low level! I want to build a Microcontroller based board(I think it called MCU board?) and when I ...
0
votes
2answers
126 views

Connector with pcb

I would like to have a SMT USB C connector with many pins attached to a PCB I am about to design. Since they are quite tricky to solder I was thinking to buy one with a small PCB already attached, ...
0
votes
1answer
99 views

Interfacing to a Microprocessor Bus without an 8255

There are 32 doors in a building each having a sensor attached with it. Each door outputs a signal 1 if it is open and O if closed. I want to design a pc based system to display the condition of each ...
0
votes
2answers
434 views

Interfacing microcontroller with external circuit - detect LED and simulate and detect button press

This is my first question on here. I am good at programming but am a little stuck when it comes to electronics and connecting two circuits together. I would like to interface a spa controller with 3 ...
0
votes
2answers
178 views

How to connect multiple micro-controllers' USB ports on the same PCB?

I'm designing a PCB with 3 Atmel ATmega16U4-AU micro-controllers on it. I will be programming them through SPI. Therefore, I will not be using D+ and D- ports on the USB interface. Then how do I ...
-5
votes
1answer
112 views

How do I specify a microcontroller as RAM? [closed]

Recently I've been thinking of creating a basic game console using either SPI or Parallel interfaces (I would also like to know which would be the best and easiest for this situation). Using an ATMEGA-...
0
votes
1answer
191 views

Could an FPGA be connected via DMI to a processor, if so how would this be done? [closed]

Can an FPGA be connected to a processor via Direct Media Interface (DMI), without a dedicated Platform Controller Hub (PCH)? The FPGA would serve as the south bridge/ PCH. Along the lines of ...
-2
votes
1answer
542 views

interface two wire pH sensor with arduino

I have purchased this pH/EC sensor from https://www.cooking-hacks.com/ph-sensor however it does not have a BNC connector and just two wires, black and read. How could i interface this to an Arduino? ...
1
vote
1answer
218 views

PCB mount socket for 1mm diameter pin

I have a module that I want to be able to plug into a custom PCB (i.e. not solder directly). The pins of the module are 1mm diameter and would be inserted perpendicular to the custom PCB. What sort of ...
0
votes
2answers
869 views

Microcontroller Interface with Modbus Serial [closed]

I'm a beginner and I'm trying to acquire data from a microcontroller with Modbus serial protocol in order to create an interface with LabVIEW. I'm using a Prolific Technology USB-RS232 converter and ...
0
votes
1answer
325 views

SD Card Reader with LPC43xx

I am trying to implement an sd card reader on lpc43xx devices. For this I can make use of the LPCopen examples that use the ROM based drivers. However for some reason the ROM based driver example ...
0
votes
2answers
167 views

Generic question about interfacing a microcontroller with a device: when is the current limit a problem?

I have an Arduino Board, to be precise many models, but let say I want to interface a ATmega328p with another integrated circuit (all is running at 3.3 V). In this case I want to connect Arduino with ...
1
vote
2answers
73 views

Guitar to Hammond tone wheel control interface

I'm new to electronics, but have been working on tube amps for a long time. I'm attempting to make a controll interface that allows me to control a Hammond tone wheel organ from guitar.Tonewheels are ...
0
votes
3answers
229 views

How to interface a SPDT switch with Mac OS X

Before I get started, I am a software developer and I have extremely limited knowledge of circuitry, so please be gentle. In it's most basic form, I guess my question is, how can I wire up a SPDT ...
0
votes
1answer
198 views

PSEN Pin when interfacing external memory in Harvard Architecture 8051

I am a computer engineering student, we have exam soon and I am completely new to this stuff . I have thoroughly searched the Internet but couldn't find any document on how to interface external ...
0
votes
1answer
66 views

Attempting to connect a simple memory chip to a computer

not too long ago a friend jokingly bought me this simple toy which basically consists of a "push-me button" that creates a laughter sound when pushed. How the hardware looks I pulled the speaker out ...
1
vote
0answers
460 views

Protocol used by tankless water heater remote control

Edit: see my main thread here Reverse-engineering asynchronous serial protocol for EcoSmart Tankless Water Heater I'm using an EcoSmart ECO 11 electric tankless water heater in a hydronic system. ...
2
votes
0answers
259 views

How to interface with the Apple Watch for the purpose of accessing its internal memory? [closed]

Unlike other apple products which can be directly connected to a PC via USB, the Apple Watch is completely wireless from the point it exits the factory, as far as I am aware. Aside from a 6-pin ...
0
votes
1answer
1k views

TFT LCD interface

I am little confused in basic understanding of LCD interface. Many times datasheet suggest 8/16 bits MPU interfacing. Here, for interface we assign GPIO's of microcontroller to respective data pins ...
1
vote
1answer
40 views

Which instrument for arbitrary signal commutation (matrix)

I would like to test a bunch of sensors. Each sensor has a DB15 connector with mixed digital and analog signals (bw ~5MHz, Z ~120R). I am looking for an instrument where I can control which couple ...
0
votes
1answer
121 views

memory interfacing with banks [closed]

In the concept of memory interfacing (cpu<=>memory), it is desirable to have two banks for odd and even addresses. The reason goes back to the history when manufacturers increased data bus width ...
2
votes
1answer
739 views

Combining speaker outputs to one secondary amplifier

Background I have a Denon 5.1 av receiver and have bought some new speakers. The only restriction (from my wife) was on size so I have managed to get hold of a set of speakers for the Sony DAV-IS10 (...
1
vote
1answer
403 views

Sensor has interrupt pins. What can I connect them to?

I have a BMI055 gyroscope and accelerometer. on the sheet there is a section dedicated to the 4 interrupt pins (16,1,12,13 respective to 1,2,3, and 4). This section starts on page 30. and it seems ...
2
votes
2answers
242 views

Interface for Induction Motor

I'm trying to make a board for controlling a reversible single phase induction motor. The board simply needs to be able to turn on/off the motor and control the direction. My understanding is that ...
0
votes
2answers
169 views

Best Practice for driving a valve

For driving a valve based on the datasheet we should limit the max current that flow into the solenoid. If we have an AC valve we should take the inrush current at the start-up into account and ...
0
votes
1answer
74 views

Interfacing with a S6B0741

I am using a LPC4300 board to interface with a graphical LCD, a S6B0741. I have been trying to get it initialized, but I am not sure if I am sending the commands the correct way. The code I have ...
0
votes
2answers
6k views

Interfacing an inductive proximity sensor with a Microcontroller using a sort of PNP-NPN transistors combination

I'm trying to repair an old circuit based on the Micro-controller S87C751 interfaced with an inductive proximity sensor similar to one already posted here The sensor is powered +24V. I followed the ...
0
votes
2answers
2k views

How do I connect this microphone to an ADC?

I have this component http://docs-europe.electrocomponents.com/webdocs/0f2a/0900766b80f2a57c.pdf. It is not clear to me what type of circuit I need to use to amplify the signal from this microphone ...
1
vote
1answer
909 views

interfaciing with a 5mp csi camera

I'm trying to interface an intel edison board with a 5mp mipi camera (https://www.sparkfun.com/products/13249) The camera uses an OV5640 imaging sensor, and is used with a pcduino v3. It interfaces ...
1
vote
2answers
353 views

Reading a 32bit IC counter on from a computer

I am working on a design to count the mechanical cycles of a piece of equipment. It has to be a 32 bit counter and be robust. I have a working prototype using a sn74lv8154 IC, configured as 32bit. ...
0
votes
1answer
147 views

How do I learn to design a 50Ω coaxial interconnection/interface? [closed]

I've designed an electronic load for testing power supplies (circuit and photo in this post: Designing a *linear* MOSFET driver stage). The load can be controlled (programmed) using an arbitrary ...
0
votes
1answer
6k views

Embedded C programming to interface ultrasonic sensor to 89s51 microcontroller

I am trying to interface an ultrasonic sensor HC-SR04 to a 51 family microcontroller like 89s51. After learning about how ultrasonic sensor works I wrote a program as per my knowledge about ultrasonic ...
4
votes
1answer
669 views

Using the right pins for keypad

I am using msp430g2553 microcontroller and a 4x4 HC543 keypad. I am using Energia IDE. I have connected the keypad from pin 2 through 9. My code is as follows: ...
0
votes
1answer
562 views

How to design GUI for my embedded design [closed]

I have designed my embedded software and it is working fine. I was thinking about making good GUI so that it is easy for others to interface with my software.
1
vote
1answer
74 views

Touch sense controller interface

I am trying to implement a system where I have to use Touch Sense Controller(TSC) with LPC2138 controller, through SPI interface. As per my consideration, MOSI line of LPC2138 --> Din of TSC MISO ...