Questions tagged [pins]
May refer to conductive traces of an integrated circuit, exposed as metal contacts, or pins, which are large by comparison and make physical connection to other components feasible. May also refer to metal pins connected to specific traces of a printed circuit board for the purpose of connecting and disconnecting external components or peripherals in a reusable way.
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Pin out clarification, I need some help understanding the pin outs
What do the pins "/CS", "SCK", and "SDI" mean? From my bad understanding of this diagram, I only have to run 3.3V to "/CS", "SCK", and "SDI".
Is this true or am I way off?
Let me know in the ...
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1answer
43 views
TFT 54 pin display driven by 40pin HDMI driver [closed]
I have a LCD screen that needs to be connected to a HDMI driver board. The LCD screen has a 54 pin FPC cable that I need to attach to a separate breakout board. Once broken out I need to attach the ...
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1answer
29 views
Altium Designer 16.1 Can't find Pin in Place Menu
I am new to Altium, so this is probably a stupid question. I want to place a pin in a schematic, as described here.
But I cannot find pin in any of the menus.
No pins anywhere... What am I doing ...
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5answers
2k views
What is the criteria of choosing a given pin pattern in ICs?
For example, why in the Atmega328P or other MCUs, the group of ports are not contiguous? Like PORTC and PORTB in the Atmega example:
Another example is this MC9S12ZV:
In particular, checking the PPn ...
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0answers
14 views
Naming confusion, how to connect DAC (BB/TI PCM1603KY) I2S, which pins do I need to use?
I am totally new in the field of DAC's and I2S. I salvaged this board from a DVD player and is well documented. There are three data lines DATA1..DATA3 that will be used for ...
2
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1answer
47 views
How to connect to tiny pogo pins in test fixture?
I'd need to build a test fixture with very small pogo pins (1.27 mm spacing between the closest pins). I've seen fixtures before that use very long, very thin pogo pins almost exactly like this one ...
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1answer
38 views
Different level TTL driving each other? A problem?
I connected a GPIO of a 3.3V level board (schematic, pin is 5V tolerant) as output to a 5V Atmega328p (schematic) pin configured as INPUT_PULLUP.
I perform a low active control function with that.
...
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0answers
39 views
6-Pin Battery Connector to 2 Wire Terminal Connection
I have a 16V 6-Pin battery. I am trying to get it so that I am going from a 6-pin connection to a 2 wire connection. I have been unable to find any adapter online so I went ahead and cut off the ...
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2answers
78 views
Is it possible to toggle a pin between “ground” and “not connected”?
I am trying to control a pump (ismatec ecoline V380) from a microcontroller (xmc4300, infineon) using an analog interface.
The pump takes several inputs, most importantly: the speed (from a current ...
1
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1answer
32 views
Intercept pin headers, three way or the header?
Is there some kind of T-splitter 3-way-splitter etc for pin header blocks? Something that passes through the pins but also contacts them and exposes a set of right angle pins too? So you can use a ...
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1answer
54 views
What kind of fan connector is this?
I need to change fans of my beamer but I cant find a replacement because I dont know which connector they used.
Thought it would be an 3 Pin connector but it isnt.
The connector in the pictures is ...
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0answers
54 views
What are the rr pins on an sram?
I've been using an IBM liberty (cell library) file for some SRAMs, dating back to 2007. [For copyright reasons, I can't post the content here]. I don't have the datasheet, and I've been trying to work ...
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2answers
86 views
Need to identify this pin / terminal
I need to identify this pin so I can order more.
RESEARCH: I've pored over Molex.com, Allied Electronics, and here with no success. I also reached out to JST and Allied directly but they were unable ...
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1answer
91 views
How can I check if an IO pin is dead?
I've been playing around with I2C for a couple days now with a DE10-Nano dev board: I'm implementing an I2C master in CLaSH so that I can talk to the HDMI encoder chip, but for now I'm talking to an ...
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1answer
86 views
Identification of 2-pin connector on 1999 Pump Machine
During my master thesis, I need to install an old vacuum pump to an machine (1999).
However I encountered this type of connector, which I am not familiar with. I have searched around the web with no ...
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2answers
48 views
Altium pin parameters in symbols
thanks for the many great questions and answers over the years. This is my first question.
I use Altium Designer for capturing designs.
I had an idea to make my processor components a little more ...
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1answer
104 views
Need to identify this pin receptacle and plug
I need to identify this pin and this plug so I can order more.
RESEARCH: I've pored over Molex.com, Allied Electronics, and here with no success. Please understand, I'm fairly new to electrical ...
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0answers
24 views
Part number pin for socket programming
I'm developing a board using the Omega2 and I need a socket for the software uploading.
I found this great video: https://youtu.be/aoYadArVJPw
I need these pins at 0:25 sec ; does anyone knows the ...
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2answers
68 views
Query: why a 4-pin DIN plug on a 5 VDC 10 A supply?
My new 5 VDC 50 W PSU has a 4-pin DIN output plug. The output diagram on the PSU lists two pins as (-), and two as (+). The voltage between any +/- pair is identical (5.13 V), so why the need for two ...
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1answer
68 views
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1answer
267 views
Arduino - Using NPN transistor as a switch to pull-up/down analog pin
Let me start by saying that I am not an EE, and my knowledge in Electronics is basic, so please bear with me and be patient if, initially I am bending a few rules.
In Epee fencing, a touch is awarded ...
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1answer
87 views
How do you connect a device pin AIo when there is only AI0+ and AI0-
I am new to electronics and I faced this problem. I tried to search about it but got lost.
Here is the sensor and the DAQ device
https://docs-emea.rs-online.com/webdocs/13ec/0900766b813ecfc2.pdf
...
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1answer
52 views
What to do with internally unused pins on a non-programmable device?
I'm designing a board for using the FLIR Lepton 2.0 LWIF camera (datasheet at https://www.flir.com/globalassets/imported-assets/document/lepton-engineering-datasheet---without-radiometry.pdf), and ...
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1answer
44 views
Pager system charging pin and socket
Does anyone know what these pins are called? This is a pager from paging system used in certain restaurants. I'd like to know what it's called as I want to use it in my device's design. I need to know ...
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2answers
74 views
Can I test if a battery is connected to a circuit?
I have a 12 V rechargeable lead acid backup battery that is connected to a circuit. When the battery is not in use there is a constant 12 V applied for charging, and when the battery is in use there ...
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1answer
69 views
Soldering double deck pin headers
Please take a look at a PCB like this one (STM32 Nucleo64 board):
They utilized so called "double deck" or "stacked" headers, meaning they can be used from both sized (top and bottom).
My question ...
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2answers
87 views
Can problems arise from mixing 2.5mm pin pitch components with 2.54mm through-hole protoboards?
I am new to electronics and from what I understand, most protoboards seem to be standardized on a 2.54mm (0.1") pin pitch. I am also aware that there are through-hole components which are manufactured ...
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2answers
99 views
Resistor or no resistor between this IC and the pmos GATE?
I'm using this IC (https://www2.mouser.com/datasheet/2/609/ADM1270-878589.pdf).
This IC controls the GATE of a pmos. I'm thinking about using this MOSFET (https://www2.mouser.com/datasheet/2/389/...
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0answers
562 views
Using ICL8038 as a VCO
I wanted to use this function generator IC as a voltage controlled frequency output especially to obtain low frequency sine waves. But unlike many implementations, I wanted to control the frequency ...
3
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1answer
203 views
Are all the pins from a USB3.0 micro-B connector necessary
I'm designing a system that has a camera (Ximea: MQ042RG-CM) that uses a female USB3.0 micro-B connector. I could connect to my computer through a male end, but I want to minimize the number of ...
3
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3answers
314 views
Not enough pins, looking for a “demultiplexer” that keeps state [closed]
I want to control a simple display with a microcontroller. The display has 8 input pins, the microcontroller only 6.
Is there an IC that I can interpose that
lets me set the state of each of its ...
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0answers
152 views
High-level (Ioh) and low-level (Iol) output current measurement on I/O pins
I'm looking for a procedure to measure the High-Level output current (Ioh) and Low-Level output current (Iol) in a I/O pin for a IC.
I'm planning to use a variable resistor tied to VDD or VSS. Maybe ...
3
votes
1answer
145 views
Giant pogo pin or spring probe pin for registration during electrical test
Solved: if you search for "GP-2 PCB Board Umbrella Shape 5.3mm Tip Testing Probe Pins Receptacles" you will find these probes! Thanks for the help!
I am designing an electrical test fixture, and I ...
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1answer
130 views
LSM9DS1 accelerometer with too many aux pins. Which ones are actually useful?
I'm designign a board with an LSM9DS1. I have an SPI bus (with only this device connected), two gpio for the chip selects (it has two CS, one for gyro and accel and the other for the magnetometer. ...
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2answers
81 views
Can Micro-controller bear the voltage at its pins more than its rated voltage?
I have a micro-controller, for which i have a datasheet specifying the ac/dc characteristics of that mcu. But in this datasheet there are no absolute maximum ratings only the operating conditions are ...
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1answer
30 views
Need advice with pin connection of an LCD module
Hello. I am working on this LCD module, COG-C144MVGI-08.
Like in the image I uploaded, PIN 1, 4 and 12 are ground.
(Just in case you need the full datasheet :
https://www.avrfreaks.net/sites/...
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1answer
165 views
esp32 adafruit huzza32 touch button
I'm having a problem mapping touch pins(for touch buttons) on adafruit hazzah, because pins on the chip(for touch sensors) and board doesn't match. Does anybody knows how to connect them(to which pins)...
2
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2answers
58 views
Errors in pin assignment for a SPICE file in Altium
I'm trying to simulate the following circuit in Altium before going to PCB route:
But I get the following pin errors:
I found the SPICE model and tried to assign them to this footprint:
Here is ...
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1answer
26 views
Calculating required delay before pin value is recognized in 8051
I looked at the following in hopes my question will be answered:
can we use 8051 pin as Input and output at a time?
But the answer was vague. It stated:
"though there is a 'strong' source ...
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1answer
78 views
Nexus 6P FPC connector
What is the importance of this metal edge of my Nexus 6P fpc connector?
I broke one of the two, would anything be affected?
Is there a name for this piece?
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1answer
141 views
Is a voltage level shifter necessary?
I am using an STM32F100xx MCU and I want to communicate via UART with a GPS module, specifically the A7 Thinker GPS
GPS Module with A7 Thinker from Aliexpress
This module, when a 9V battery is used, ...
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1answer
99 views
Are pins of my Arduino fine? [closed]
I was making an Arduino project. It was a very safe project as I copied it from Arduino's official website. The project was about adjusting the speed of blinking the LED on 13 pin of the Arduino.
I ...
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1answer
44 views
How do the pins of this analogue switch correspond in this diagram?
Regarding an answer of my previous question, I want to use the following topology:
When the input is below the threshold, the comparator output is HIGH and the Analogue switch above outputs the set ...
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1answer
155 views
Changing GPIO pin configuration on the fly
I am using STM32F0 based ARM Cortex-M0 micro controller in my project. Because of lack of available pins, I need to use one pin as an ADC-input and as a GPIO-digital-out (not at the same time, but in ...
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1answer
160 views
BA3121 datasheet pin confusion
The BA3121 is an audio (ground loop) isolation amplifier. In the datasheet there is no simple pinout picture with names of the pins, so I draw this pinout picture by following the block and the ...
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3answers
914 views
Connecting to an IR sensor to a microcontroller module without soldering pins
I'm trying to connect an IR sensor to an Adafruit Feather Huzzah microcontroller module without soldering the pins on. The sensor has a power supply of 5V which I have connected to the USB pin of the ...
1
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1answer
60 views
Help identifying/using some weird pin headers
EE student who's a little new to the hardware side of electronics here.
I could use some advice on how to use these things- I assumed they were pin headers, but I might be wrong about that.
They ...
5
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1answer
310 views
What's the name of this nice spring contact?
Ah, it is really a beauty isn't it (see picture below)? Around the package you see some spring contacts, really, really nice. I have some ESP8266MOD modules and like to use these spring contacts ...
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1answer
133 views
Arduino Nano pins are always high
i started to build an infrared transmitter (commander). I use 4 pushbuttons for left, right, up, down. These buttons are pulling down when pressed. I used internal pullup resistors. My prboblem is ...
2
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1answer
88 views
Is this an accurate model of a microcontroller pin?
For something so common, I can't seem to find anything online on what a microcontroller pin "looks like" (besides a high-level voltage source when output, open-circuit when input). So I decided to ...
