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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4answers
320 views

Is there a difference between PIO and GPIO pins?

GPIO = digital + analog pins; PIO = only digital ? EDIT: PIO defined in datasheet as "Programmable input/output, also known as general-purpose I/O"
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1answer
55 views

Does anybody have PCIe (3.0) aka PCI Express module card edge connector technical drawing?

I was searching through the internet to find PCI Express card edge connector footprints / technical drawings / pin spacing / layout of the module cards that you stick in these connectors you can find ...
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2answers
60 views

Guidance on the use of pins of LM1117

I plan on using this 3.3v regulator It has 4 pins on the SOT-223 package I plan on doing the following ( but want to check ) Pin 1 - Gnd Pin 2 - Vout - 3.3v -- Tied to pin 4 feeding my circuit Pin ...
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0answers
18 views

Pin config for CIS scanner

I've salvaged a linear scanner from an HP scanner cum printer. The scanner senor model is CA4B94. It's got two portions on a single flat ribbon cable. One is for the motor, so I guess it's safe to ...
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2answers
61 views

Electrodes and number of pins in vacuum tubes

I am confused regarding the terminology 'diodes', 'triodes' etc and the number of pins in these elements. If a diode has a cathode, an anode, and a supplementary anode (the control grid or plate) and ...
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1answer
31 views

Grounding GPIO pins during 8051 programming

I'm trying to make a programmer for the 8051 microcontroller IC's, specifically the AT89C2051. I saw a circuit online (the blowit programmer) in which the unused GPIO pins are left floating. When the ...
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2answers
64 views

need help identifing parts

The first Green bit is a thermistor out of a fluke 374 clamp meter, but cant find the manufacture from the logo or what the number means. The other is a socket pin from a single wire connector, its ...
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1answer
37 views

Nintendo 64 Controller Pins

I am looking to find the correct kind of crimp pins that go in the controller nub of a Nintendo 64 controller. I have attached some pictures of what I'm looking for. I have read up on terminal pins ...
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2answers
34 views

optocoupling a triac: correct pins

I was reading PLEASE BE AWARE THAT... the moc output MUST BE between the triac pins A2 and G it is never written in any datasheets but it MUST be so or your triac won't commute ... https://www....
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1answer
71 views

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
30 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
19 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 ...
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1answer
60 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
42 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
46 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 ...
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1answer
34 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
55 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
56 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
87 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
97 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
87 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
49 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
107 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
69 views

ATmega328p PIN reading

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1answer
302 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
98 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
53 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
46 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
76 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
74 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
126 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
102 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
663 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 ...
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1answer
247 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 ...
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3answers
319 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
173 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 ...
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1answer
158 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
143 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
83 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
199 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)...
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2answers
65 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
27 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
79 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
155 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 ...