Questions tagged [pinout]

The arrangement of pins and their functions on a device

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3 answers
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Why is this 75 ohm resistor present in the Ethernet connector? (10/100Base-TX)

In this datasheet (and in other similar) pins J4, J5, J7, J8 are connected to the ground with a resistor and cap. For 10/100Base-TX pinout it seems they are not used (at least for modern of the ...
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Is an RST pin the same as a microcontroller NRST pin?

I am currently working on a PCB design using a STM32F411CEU6 microcontroller. In order to debug the circuit using an ST-Link, I have placed a header in order to access the pins in the microcontroller. ...
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1 vote
1 answer
63 views

Is ESP32's GPIO25 Pin adc1 or adc2?

I am trying to design a PCB with ESP32 and a Lora module I want to use serial1 for Lora RX/TX communications. I saw a board which is using GPI35 to Lora RX and GPIO25 to Lora TX. But in same time ...
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Correct pinout for USB-C 24 pin (16+8) rep

Can someone who has used these components please assist me in determining which is the correct pinout: My pinout downloaded from Digikey site: Another pinout found on Google: So which one is correct?...
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0 votes
1 answer
48 views

Why is one of my MCU (Bluepill) digital pins broken/not working?

Sorry for the noob question. I'm working on an ESC circuit, first I want to work on a very simple ESC circuit without Back-EMF detection like in this video https://www.youtube.com/watch?v=kAaknXe_JSk&...
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0 votes
1 answer
37 views

Should HOLD pin be grounded in a macronix MX35LF1GE4AB chip if I only want to read data from it?

I have a Macronix MX35LF1GE4AB NAND Flash and I want to read its contents using an rarpberry pi. But I have trouble on how to wire the HOLD pin. Should I ground it. What I want it to read data from it....
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0 votes
0 answers
29 views

NodeMcu (ESP8266) pinout problem

I am trying to use a nodeMcu in a project that involves: a microSD card reader (SPI), two devices that communicate with nodeMcu via software serial, a switch and 2 leds. Currently the microSD is ...
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1 vote
1 answer
136 views

Designing baseboard for Intel processor

We are studying the feasibility of designing a minimal board for a high end CPU such as Intel's 8th Gen Core i7/9 alongside some FPGA. We have experience with DDR3/PCIe designs and know about high ...
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2 votes
1 answer
57 views

HDMI Type E pinout

I am looking for the pin out of the HDMI Type-E connector? It is surprisingly hard to find and as far as I know the pins 1-19 are not the same as Type-A. What is the pin out of HDMI Type-E?
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1 vote
1 answer
62 views

USB pinout on OMRON thermal printer

I'm trying to figure out how an OMRON Printer HEM PRT 1-Z operates (see related question on the Raspberry Pi StackExchange & IC identification question) in order to wire it to a Raspberry Pi Pico. ...
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0 answers
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ESP32-s2 Wroom. Are the SDMMC pins same as in ESP32 (not S2)

The documentation is not very clear. https://docs.espressif.com/projects/esp-idf/en/latest/esp32/api-reference/peripherals/sdmmc_host.html Are pins the same in the S2 variant?
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2 votes
2 answers
121 views

How important is a PCIE_PEG_TXN pin on a motherboard?

I managed to break the PCIE_PEG_TXN 2 pin on my motherboard according to this pin layout: https://sector.biz.ua/docs/lga-775-1150-1151-1156-1155-1366-2011-pinouts/s1200_1.png I am curious if it is ...
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2 votes
0 answers
67 views

Is the WIZnet W5500 module affected by the signal pin of a relay module?

I am using a Raspberry Pi Pico, a W5500, and a relay module. When I don't connect 24VDC for the relay module (NO and COM pins,) the Pico, W5500 and relay module work properly (the relay only blinks.) ...
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0 votes
1 answer
85 views

FPGA pin numbers

I'm having trouble understanding the structure of FPGA datasheets. From what I can tell, there is usually a table of "Signals Descriptions" with the pin names and their function, but I don't ...
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-1 votes
2 answers
329 views

4 Pin Cyrstal Oscillator Pinout to connect to Xi and Xo of CH340G

I need to connect a crystal oscillator to CH340G USB TTL converter, the oscillator I have is 3N12000G33YC with pinout and test circuit shown. It has 4 pins which I am unfamiliar with, I only know ...
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1 vote
1 answer
50 views

PCIe pin out (point of view)

I made a board and I would like to connect it to a PC with a PCIe edge connector. The PC will be the root complex (master) and my board the endpoint (slave). I have a question about the pinout of the ...
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1 vote
0 answers
71 views

eMMC chip change. Does not work for unknown reason

Because of the chip crisis, I had to use (the only ones which were available at the time) different eMMC chip. Originally it was MTFC16GAPALBH-IT, but I have temporarily replaced it with MTFC4GLWDM-4M ...
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  • 2,279
-1 votes
1 answer
61 views

Help me identify pin of this LED Matrix PCB

LED Matrix bicolors (Orange/Green) PCB board of 10 LED Matrix of 4 x 8 (LTP23548AA-NB) It looks like J3 is regular UART|USB. I'm trying to find what J1 and J2 are about. The goal is to add a ...
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0 votes
1 answer
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How to Troubleshoot a Garmin GPS 16x HSV?

I'm trying to get one of these guys talking through a rs-232 serial port: https://support.garmin.com/en-US/?partNumber=010-00258-62&tab=manuals There you can download the manual which has all of ...
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0 votes
0 answers
89 views

Thinkpad 45N2948 Trackpoint pinout

A while back I got a Thinkpad replacement Keyboard in order to salvage the trackpoint of off it, for use in a project. The replacementparts seller listed it with the following Modelnumbers: X100E X100 ...
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  • 1
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1 answer
747 views

What's the correct pinout for Half Duplex RS-485 in an RJ-45 connector?

I'm working on a project that involves some long-distance communication using RS-485 and MAX485 and MAX3485 ICs. My project features custom PCBs (essentially Arduino/Teensy Shields) which react and ...
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0 answers
82 views

Pinout for a 2047 chip

What is the pinout for a 2047 IC? Here is an underside of the circuit: Unfortunately, the quality of my camera is not good enough to capture the writing on the chip (the writing is completely ...
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0 votes
0 answers
30 views

Schematic Pin Swap not able to change Pin Group

I successfully setup and performed a pin swap on a Gate array in my design. However now I wanted to remove a specific pin from a "pin group" and when I went into the Pin Swapping ...
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0 votes
1 answer
50 views

LCD does not have Register Select or Read/Write pins. Instead has FLM, LP, CP, and M pins

I have a old Optrex DMF6127N LCD display. I can not find any datasheets for it online (I believe it was made specially for AT&T's Bell Labs) and am trying to get it to work. I have looked at ...
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4 votes
3 answers
1k views

What can I do about using incorrect P-FET package?

I just got a PCB in I designed from fab, and I quickly discovered I made a mistake in the design. I'm using a P-channel MOSFET, D2PAK, as a high-side switch. Its pinout is (1) gate, (2) drain, (3) ...
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  • 117
0 votes
2 answers
180 views

Software to create board pinout diagram [closed]

What software is used to create this (very cool) pinout diagram?
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1 vote
0 answers
45 views

Identify Ecobee's 4/5 screens pinouts

Got myself few broken Ecobees thermostats thought to reuse some of the parts in my Arduino/STM32 projects. The question is how to identify screen pinout. I have few working Ecobees and oscilloscope ...
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0 votes
1 answer
47 views

Where does ATXMEGA32E5 epad connects to?

About the ATXMEGA32E5-MUR (32-VFQFN Exposed Pad) Package: I do not know where the Central PAD connects to, since the datasheet does not mention it. So I guess it is NC (No connect)? And it does not ...
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3 votes
4 answers
2k views

Reverse engineer this old burglar alarm panel

I took apart an old magnetic door alarm, where when the contact is broken it counts down from 10 seconds for the user to input the code (which ranges from 1 to 8, there is no 0 or 9 key). This alarm ...
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0 votes
1 answer
129 views

How to get 5 volts from Lightning pinout? [closed]

How to make the Lightning port of iPhone output 5V power?
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-1 votes
1 answer
67 views

EDT 20-20412-3 lcd rev.a pinout [closed]

I have salvaged an EDT model 20-20412-3 lcd display I would like to use. I have look for the PINOUT but can't find it anywhere. It looks a lot like a ST7290 Graphical LCD Module (128x64px) Maybe ...
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-1 votes
1 answer
779 views

Pinout for 3.5mm female audio jack

Whats the pinout for this jack?
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0 votes
0 answers
43 views

Connector pinout review

I am designing a system around a bus using DIN 41612 connectors. I have come up with the following pinout for my connector taking into account the following requirements : Each signal pin should have ...
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1 vote
1 answer
84 views

KiCad pin reordering from PCB designer to avoid crossings

Sometimes pins of a part are equivalent in the sense it does not really matter which is used (typical examples being connectors, terminals, GPIOs.) Is there a way in KiCad to reorder the pins in the ...
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1 vote
1 answer
145 views

How to detect pinout of trackpoint (probably ps/2) module?

I have following trackpoint module of recent thinkpad x390. There are some info about older modules, most useful(combined) one is: https://deskthority.net/wiki/TrackPoint_Hardware However, i found no ...
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0 votes
1 answer
68 views

How come the microcontroller of this board is being powered in this configuration?

I have this development board with the following pinout: And I am using the following FTDI to USB interface to communicate with a PC: Here is a photo of the board and the FTDI wired to the board ...
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  • 1,419
0 votes
2 answers
545 views

What wires are optional in HDMI?

The 2009 Hyundai Genesis has a combo CD player / stereo / Navigation / car information system. It has an LCD panel that displays information from this system but I'd like to get it working with a ...
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  • 385
0 votes
1 answer
61 views

How to find the USART TTL levels of this board?

I have this Nucelo board with this manual and need to communicate with it with PC through its one of USART peripherals which are: USART3_RX (CN10 pin18) and ...
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1 vote
2 answers
131 views

Trying to find and bridge USART pins from the manual of an STM32 board

I am trying to solve an issue regarding a firmware with this 64-bit Nucleo Board. I have the hex file and can see the ready source code but when I upload the firmware I am not able to communicate ...
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  • 1,419
0 votes
0 answers
60 views

Looking for a pin-compatible to LT1013DID rail-to-rail in/out op-amp

I have designed a circuit using LT1013DID (SOIC 8 footprint) op-amp and while Spice simulation worked, I forgot about input common-mode voltage limit (which it seems is not simulated) and thus need an ...
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1 vote
2 answers
52 views

Raspberry Pi Single-channel relay with 6 pins pinout decipher needed

I've got this single-channel relay for my Raspberry Pi. The relay has 6 pins instead of the usual 3, more over out of the box there was a jumper connecting 2nd and 3rd pin (I'm counting pins from top ...
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1 vote
1 answer
387 views

Can I connect DTR Pin to CTS Pin?

I want to connect a Pixhawk 4 (It's a flight controller) to a Raspberry Pi 3. Therefor I purchased this FTDI USB adapter. Its pinout is the following: ...
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  • 111
0 votes
1 answer
157 views

Reverse engineering random camera module from mobile devices

I have A camera module I believe either from a tablet or a cell phone and I want to know where to find information on the serial pin out or on how to read the ribbon of the camera
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0 votes
1 answer
129 views

HDMI cable lost colors [closed]

I accidentally bent one plug on one side of an HDMI cable and, after taking the plug apart and straightening everything out as much as possible (after which the only apparent structural oddity is that ...
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  • 230
-3 votes
1 answer
146 views

What does I/O/T stand for in a pinout diagram? (ESP32-S2)

I am looking at the pinout of an ESP32-S2 board with LCD (see picture below) and I am wondering what I/O/T stands for. I am particularly looking at pin IO46 and wondering if it can be used only as ...
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0 votes
1 answer
194 views

How to find pinout of DC geared motor with encoder?

I have a DC geared motor with 1 hall effect encoder and I'd like to find the pinout to use it. Unfortunately I don't have the data sheet and since all motors have different pinout, the only option I ...
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  • 23
1 vote
1 answer
46 views

Is APDS-9253 pinout really inverted?

I'm drawing the footprint for APDS-9253 and in the datasheet I'm looking at package drawings. As far as I understand, the top-left drawing is a view from component side, the top-right one from solder ...
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  • 875
-1 votes
1 answer
56 views

Retrieve pinout of proximity sensor

I need to retrieve the pinout of a proximity sensor. I don't have any specification nor order code. The sensor has 3 wires that are connected to the main board. I made some measurements with a ...
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  • 875
0 votes
0 answers
58 views

KiCAD: Potential error in designing schematic symbol

I received a part of a schematic. It is this one: When i received my parts, i saw that the pinout was reversed. 1-8 was on the left side, while 9-16 was on the right side. At that time, i didn't know ...
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1 vote
2 answers
376 views

Is the Raspberry Pi Pico pinout compatible with the Arduino Nano?

I could not see any Information regarding the pinout compatibility in the documentation: https://www.raspberrypi.org/documentation/pico/getting-started/ To what extent is the Raspberry Pi Pico pinout ...
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