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Brand new FPGA burnt?

So, when I plugged in my FPGA for the first time, it started to smell a bit like chemicals, and this showed up. Is it burnt, or is it just some type of residue that popped up once I connected it?
superogg1's user avatar
0 votes
1 answer
41 views

Identify board components Yaskawa Z1000 VFD

Is there any way to figure out part numbers for the two components from the picture? That's on board of Yaskawa Z1000 VFD.
user388390's user avatar
2 votes
0 answers
70 views

Which rated voltage is best for replacing these aluminum electrolytic capacitors? [closed]

I need to replace two electrolytic capacitors rated for 200V and 330uF. The old ones were CapXon with declared 0.12 of tanδ and 2000 hours at 85°C, belonging to the brand's "cost-effective" ...
hotwired's user avatar
0 votes
0 answers
33 views

Parametric or Template test by Ethernet Compliance Test

I am trying to design this part of TC6 from Ethernet test fixture board. As I dont need rest part of the parts for my test. Can someone tell me what are the loads are? Here three different loads can ...
Alok's user avatar
  • 1
0 votes
0 answers
87 views

Connecting a daughter board

I would like to mount one board to another. I see board to board pin connectors, but this board I am designing can use whatever connection method is best to supply Vout and Vground to a secondary pcb. ...
Wes Ellgass's user avatar
1 vote
2 answers
100 views

Gerber file analysing before production

I'm trying to check and analyze the PCBs of a board, developed with Ultium Designer before being produced. I already have the output files from Ultium Designer (it's not my job). The output files ...
khaoula's user avatar
  • 11
1 vote
1 answer
46 views

Programming a PIC with a programmer on demo board

I'm a beginner on PIC world. I'm doing a project with PIC PIC18F04Q40 and I'm curious if I can use the programmer/debugger present in a Curiosity HPC board to program the PIC18F04Q40 through ICSP ...
noob_programmer's user avatar
1 vote
0 answers
49 views

Triac Equivalence

I was troubleshooting an infant radiant warmer having little output voltage to the radiator power outlet and I did a continuity test on a triac and it's a dead component. I don't know the equivalence ...
Smart 's user avatar
  • 11
0 votes
1 answer
80 views

Right transimpedence amplifier choice for input range

I have a device that produces a ±30 nA signal and I'd like to measure this to a 0.1 nA precision. Since the currents are so low and I don't have much time to make mistakes, I am planning to use a TIA ...
JoVi's user avatar
  • 1
0 votes
2 answers
936 views

Kicad 7 - Resize a board

I created a board in Kicad, but doing more work on it, I managed to shrink its size. All this is unused space. Is there a way to shrink the board. It is easy to move the edge cuts, but the unused ...
user1584421's user avatar
  • 1,369
0 votes
1 answer
81 views

USB-C PD Smartphone

My scenario: USB-C 5V smartphone charger is connected via USB-C cable to an breakout board. Both breakout boards are soldered together (All A Pins to A and all B to B). So basically I only extended ...
Java ist auch eine Insel's user avatar
1 vote
0 answers
178 views

I designed a boost converter based off of a Texas Instruments schematic. Can't figure out why they're shorting out after a while

I designed my first DC to DC boost converter, which was primarily based off of the schematics that Texas Instruments provides for it in the datasheet, and then fine-tuned (applying specific component ...
soconnoriv's user avatar
4 votes
6 answers
1k views

What is the name of these plastic bolt type things holding the PCB to the housing?

What is the name of these plastic bolt type things holding the PCB to the housing in the corner here? Is there a way to remove them and then reattach them? I want to get at the PCB, modify it, and ...
user2042006's user avatar
-1 votes
1 answer
83 views

Which kinds of embedded platforms can be considered well-suited for acquiring a general taste of interrupts? [closed]

I'm an application programmer without much knowledge in low-level programming. I've set up a basic toolchain for assembly programming with the ATMega328P on an Arduino Uno R3 board. One of my aims is ...
Piovezan's user avatar
  • 133
3 votes
3 answers
449 views

Board to board connector on old home theater amplifier

I am taking apart an old amplifier and it has a connector that directly connects two PCB boards. I am unable to detach it by pulling it up. Applying pressure to the two small indentations does not ...
Eldur's user avatar
  • 53
3 votes
2 answers
235 views

Board-mounted vs chassis-mounted fuses and maximum voltage on perforated board

I'm trying to build a circuit that uses 400 VAC mains, with a peak voltage of 56 5 V, but let's consider 625 V maximum to take into account mains voltage fluctuations. I always see fuse holders ...
Dinis's user avatar
  • 73
1 vote
1 answer
284 views

Board connector for solder pads

Beginner question: I have a sensor board which has 6 solder pads (in parallel to each other, just a line of 6 pads), but no holes. Do there exist any connectors (like molex) that allow to fit the ...
Lemonbonbon's user avatar
3 votes
2 answers
375 views

Altium Error: "Multiple Path found from location: (XXmm, YYmm) when defining board shape"

I have a small PCB created in Altium. It has flex and rigid parts. My problem is when I try to change the board shape ("Design-> Board Shape-> Define board shape from selected objects")...
terbus5's user avatar
  • 61
1 vote
2 answers
235 views

Layout for fuses with fuse holder

I am designing a PCB with a throughhole mounted fuse holder (ALTIUM designer). Is there a standard way of sketching a fuse (for ex: 5HF 12-R , laying them out with the fuse holder footprint (for ex: ...
metsik's user avatar
  • 173
1 vote
2 answers
656 views

Is "Circuit Card Assembly" (CCA) an industry standard term? [closed]

I'm a software engineer who has been working a lot with firmware the past 5+ years. At my current place of employment Electrical Engineers prefer to refer to a circuit board as a "Circuit Card ...
Terence D's user avatar
0 votes
1 answer
52 views

How to detect if a user has gone past certain locational boundaries physically [closed]

I want to write some software that takes the location of a user's phone and makes sure it is within a certain boundary that is set by "invisible fences"; see the picture below. What kind of ...
isaiahstanke's user avatar
3 votes
1 answer
862 views

Does anyone know what CJMCU on breakout boards means?

I have recently been looking at a lot of breakout boards and noticed they have CJMCU in their description and even printed on them. Initially I thought it may be an acronym and then thought it may be ...
Lister Remmir's user avatar
0 votes
1 answer
114 views

What is the black, finned, metal part in this picture of a board?

Can someone explain what this black part is? This a WLAN module.
Anna Koroleva's user avatar
5 votes
4 answers
1k views

Guess power from board?

I ordered a small <1mW laser off of ebay that comes with a small controller board. I tested it briefly with a 9V battery and it works fine, but I don't want to use it extendedly without knowing ...
cmc's user avatar
  • 267
1 vote
1 answer
57 views

What parameter dictates the analog output speed for this board?

I plan to use this I/O Device for a project where the the analog output should be able to settle to a value for a 100 kHz moving point scan device. Meaning that between point A and point B the analog ...
GNZ's user avatar
  • 1,811
0 votes
1 answer
374 views

Solder paste and perfboard/prototype board/donut board destroying the circuit?

Does perfboard/prototype board/donut board made of paper or something (at least it's not fiberglass, that much I know) become conductive when heated to the point of becoming black? I'm assuming these ...
user avatar
0 votes
1 answer
156 views

Connecting development board board to sensor [closed]

I am trying to connect a Nordic nRF52840DK board to the LSM6DSL sensor (accelerometer) on a STEVAL-MKI178V2 adapter board. The goal is to successfully connect the devices and test the sample program ...
carrot_rabite's user avatar
1 vote
2 answers
545 views

Software to create board pinout diagram [closed]

What software is used to create this (very cool) pinout diagram?
D_A_8's user avatar
  • 57
3 votes
5 answers
7k views

Altium not showing PCB's body in 3D view

I am trying to copy the Arduino schematic, but when laying out my PCB in Altium I have issues with the 3D view. As you can see from the picture below, the PCB appears without problems in the board ...
gugiek's user avatar
  • 71
0 votes
1 answer
350 views

Can someone tell me how i make the MACH3 software to communicate with this board?

I have a project to do in which I will need to use this board to move one of the axis of a machine. But I can't find the datasheet for that board. It serial number appears to be HW-3561224. Besides, ...
Guilherme's user avatar
  • 395
0 votes
1 answer
247 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 ...
cm64's user avatar
  • 2,217
0 votes
2 answers
454 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 ...
cm64's user avatar
  • 2,217
0 votes
1 answer
132 views

What type of rectangular chip is this? And how does one even know how to identify chips on boards?

I have a two Playstation 5 boards which are identical, but one of these chips are labeled differently (C1 and A6). What are they and what do the labels indicate and how do I source this type of chip? ...
Patoshi パトシ's user avatar
0 votes
1 answer
55 views

Need help explaining and more details and answering the feedback for PCB board [closed]

i need help with my doc. I do have to inspection and assembly PCB board I this is my steps are 1-First, I will make sure the PCB board does not have any damage by visual inspection PCB and see if ...
Sono's user avatar
  • 1
0 votes
3 answers
1k views

Thermador oven circuit board troubleshooting - where to go from here?

I have a Thermador double oven unit that is not working correctly in one of its cooking modes. I have done some troubleshooting, but haven’t located the problem to my satisfaction. I wanted to see if ...
rothlane's user avatar
0 votes
0 answers
81 views

Cold Reset STC125A60S2 PLC Board

I am working on these PLC Board: http://more-suns.com/product/html/?321.html but I cannot contact manufacturer. The fact is to have it programmed I have realized that I can only do it after a cold ...
user3177225's user avatar
0 votes
1 answer
462 views

Which components should be checked on a faulty tv power supply? [closed]

So, I'm new to working with electronics and I didn't study electrical engineering or anything related. I've collected some dead tvs and monitors over time hoping that I'm gonna fix them. I managed to ...
Emil-Sorin Malai's user avatar
1 vote
1 answer
809 views

KiCAD - Design rules for fabrication boardhouse [closed]

This is my first time designing a PCB with KiCAD. I plan to send them to JLCPCB for assembly. There are a ton of parameters to be set like track width, via width etc. If these are set wrong, then the ...
user1584421's user avatar
  • 1,369
1 vote
1 answer
69 views

Ebike 24v relay board - switch?

Hi I’m building an Ebike and using a reclaimed relay board from an old electric moped. My question is the relay board has 3 small wires presumably for the switch, but this confuses me as I only need 2 ...
Steve's user avatar
  • 11
1 vote
0 answers
53 views

What programmable board should I use for my project? [closed]

I have a small project going on, you can call this a research project that I needed to pass a certain class。 But the thing is, I don't know what I should use Arduino? Raspberry Pi? Im a complete ...
Satou Kazuma's user avatar
0 votes
1 answer
118 views

Problem with making an Arduino-like board

I'm making my own Arduino-like board with an ATmega328p and an FT232RL. After realizing the circuit (making sure everything was correct) I had some prototypes made by JLCPCB. Later I bought the ...
Gianluca Grasso's user avatar
1 vote
4 answers
768 views

Fine wire for breakout board soldering that won't break

I've been using silicone sheathed stainless steel wire (30 awg) with a 1.27mm breakout board. The wires cannot be secured (it's tight in the thing I'm building), and they easily break off at the point ...
user avatar
24 votes
8 answers
4k views

LEDs on boards - pros and cons?

OK - I tend to design high value low volume boards so my view of this is biased. I like to sprinkle a lot of LEDs around my boards. One (red) LED for every power voltage on the board. Multiple s/w ...
Dirk Bruere's user avatar
1 vote
1 answer
83 views

Using a Renesas evaluation board as a Programmer

I am new to using renesas microcontrollers, and could use some advice from someone with experience using them. I found this rl78 evaluation board and a quick reading of the product description on the ...
Aditya Rajendran's user avatar
0 votes
2 answers
117 views

Development Board

i gained some experience with ARM and especially with STM32 MCU models.Now i wanted to start learning x86_64 architecture and my initial goal was going towards it. Is there any good development boards ...
Anton Stafeyev's user avatar
1 vote
0 answers
53 views

Bluetooth Receiver Board - Noise Problem

I recently bought a bluetooth receiver board in order to add bluetooth to my car, this however is not as easy as I thought. I am not very skilled with electronics. I have an aux audio input in my car ...
kingbach1702's user avatar
1 vote
3 answers
134 views

Can I build a 4A circuit on cardboard?

I'm planning to build a 12V 4A circuit, and I was originally going to put it on a strip board. However, the board I ordered came broken (and each piece would be a bit small for building a circuit), ...
Isaac Krementsov's user avatar
0 votes
1 answer
64 views

Can you help me identify this board?

I have found this board installed and I am unsure what it is or what its function is. I have googled it to no avail.
Martin Suchta's user avatar
0 votes
0 answers
46 views

Position of global fiducials

I have two question for placement of global fiducials on my board: In the board below you see two fiducials and a component (SMD connector). I would like to place the connector on the very edge of ...
F. Heisenberg's user avatar
0 votes
0 answers
297 views

How to refresh many capacitors quickly

I'm working in an embedded space, where I need to keep voltages on a bunch of capacitors (RC circuits). Currently, I have an EEPROM with some data value for each capacitor. There is 1 DAC that feeds a ...
nullromo's user avatar
  • 101