Questions tagged [error]

An error is the unwanted operation of an electrical / electronic component or system resulting from malfunctions. Use this tag if you have something that doesn't work as it should, or doesn't work at all.

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68 views

LTspice error, "Matrix is singular" for 3 phase circuit

I have been searching about it online but all I can find is info about a transformer. Am I missing something? Here is the circuit: This is the circuit I am trying to make:
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0answers
30 views

Stepper Motor Driver (2CM560) ERR ports

I have a Kinco 2CM560 stepper motor driver. There are 2 ports on this driver named "ERR+" and "ERR-" that I can't figure out fully what is their functionality! why we need this ...
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0answers
55 views

MPLAB build error

I'm using MPLAB Harmony3 and I'm having a problem. I think I have completed the 'generate code' from the configurator (There was a red text in the below picture, but it seems to have been completed) ...
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0answers
39 views

TMS320F28375Dpzps JTAG Communication Problem?

At the moment I am trying to run the TMS320F28375Dpzps . I use Jtag as TMS320-XDS100v3_UM-336636 and the program Code Composer to communicate with the Micrcontroller. The JTAG (picture: JTAG) and the ...
3
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1answer
26 views

Simulation Error in Circuit Lab with 2 Dependent Sources

simulate this circuit – Schematic created using CircuitLab I'm practicing some problems and came across this circuit. It asks for the Thevenin equivalent with respect to terminals A and B. I ...
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1answer
39 views

Error " Too few nodes: draw " for my simulation High-side driver VN820PT-E

I get a model error in LTspice from adding a high-side driver, VN820PT-E for my library. But after simulation, I have an error message. " Too few nodes: draw " . I don't understand this ...
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2answers
60 views

I keep getting this error but don't know why "Invalid input. - input required but omitted"

Please help me by checking if my program is correct or giving the correct ladder program. I keep getting "Invalid input. - input required but omitted" this error for all the variables in ...
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0answers
35 views

occasional EEPROM corruption in phyCARD

I am trying to find a root cause for corrupted EEPROM in phyCARD PCB. PhyCard is so called "System on Module". You can find some more info here: https://www.phytec.eu/product-eu/system-on-...
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0answers
25 views

Getting an error in Proteus while simulating the following circuit

I have built a circuit with a series of bandpass filters to detect specific frequencies. While simulating the circuit on Proteus, I was getting the following error. I tried looking for a solution to ...
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1answer
67 views

Total voltage error at the output of the Op-Amp

I have this circuit (shown below), I need to calculate the total error voltage at the output of the Op-Amp due to R3 and Vos. U1 is the LM741, which has Vos = 5mV and ib = 80nA. Till now I’ve ...
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1answer
42 views

Solution to unknown function 'v' for a voltage source in LTspice?

I have been getting this strange error. Has anyone else experienced this kind of error beforein LTspice?
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2answers
88 views

Microchip's pic-as throws syntax error on macro define

I have a file with a name like xxxx.asm in it I have: InitPORTA MACRO pic-as throws a syntax error on this line. The code ...
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1answer
46 views

Re-annotation from pcb now means my components are linked with different designators

After placing my components I re-annotated from the PCB to get positional annotation. This worked fine. But I've just noticed that components on my PCB and schematic (whilst linked, i.e I can click on ...
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2answers
55 views

How should endpoint report error for TLP over PCI Express (PCIe)?

On a Windows system there is a PCI Express (PCIe) endpoint device with an application design that handles TLPs from Windows. The design is being updated, and I want to leave out some previous ...
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3answers
85 views

Why does the dynamic error of a low pass filter decrease when adding a load at the output?

I have this anti-aliasing low pass filter where R = 100Ω and C = 3.62μF. When the input has a frequency of 50Hz, Vin(t) = sin(2π*50t), I have worked out the dynamic error and found that the maximum ...
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0answers
36 views

adapter to correct wrong pins DFN 10

I had some boards made and assembled, but made a mistake with a DFN 10 part, and reversed two pins in the layout. How do I fix it? Should I remove the part and create and insert an adapter board to ...
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0answers
163 views

STM8 Programming Error using STVD

I am using a STM8S105C6T6 in one of my application and I am facing problem while programming it. Software used: STVD version 4.3.12 Compiler: Cosmic CXSTM8 Special Edition 4.5.1 (Free 1yr License ...
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0answers
73 views

Follow-Up: LTSpice “Error:undefined symbol in:” problem

Thanks to those who have provided helpful answers on the original post. I've tried @Ernesto 's suggestions, but I must not be implementing them correctly as I'm still receiving similar errors. Please ...
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0answers
442 views

Quartus Prime Lite: Error (209053): Unexpected error in JTAG server -- error code 35 and Error 202940 Can't access JTAG chain with SSH

Today I received a Terasic USB Blaster and I want to program an Altera 10M04SCE144C8G FPGA. I am using the Intel Quartus Prime 20.1.1 Lite Edition installed in Ubuntu 20.04. This FPGA has already been ...
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0answers
28 views

How to light sleep ESP8266 (RTOS SDK)

I am developing a data logger with ESP8266 using RTOS SDK and that needs light sleep to be implemented. From this official programming guide (page-36) I have used the following code with the latest ...
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3answers
259 views

How does the 4th satellite in GPS know the time offset?

Going through the working of GPS technology, I came to know that at least 4 satellites must be visible to solve for the location with considerable accuracy. Going through most of the resources, I can ...
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2answers
35 views

LDO - DC Accuracy Error Calculation (Datasheet vs Theoretical question)

I'm looking at calculating the DC Accuracy of a couple LDOs and came across some good resources - but I'm having trouble linking their example calculations to the "real world." [TI LDO] ...
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1answer
44 views

LTSpice error: Time step too small

I am trying to simulate the Buck Converter LM22676 from TI for a 5V output. But LTSpice shows an error saying that the time step is too small when I try to run a transient analysis. Can someone please ...
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2answers
67 views

Why is my EEPROM not working?

I have a 24FC01, 1 kbit EEPROM on my board. The SDA and SCL lines are pulled up to 3.3V through two 2k resistors. I'm using a STM32F407 MCU to read and write data to the EEPROM. Using the HAL ...
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1answer
78 views

Is measurement uncertainty 2 times standard deviation or 2 times standard error?

Textbooks and online sources often say the industry standard for uncertainty is given at a confidence interval of 95 %. This means out of 100 measurements, 95 would achieve the specified value and ...
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1answer
74 views

How are equations (transfer functions) and the uncertainties for sensors found?

Does anyone have a good: book / link / resource which describes from the ground up how to find an equation / transfer function and the accompanying uncertainties for sensors? I am looking for ...
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1answer
50 views

How many standard deviations is Sensor / Component Uncertainty (+/- X) given in?

For example a resistor of 1kohm with uncertainty of +/- 1%, does this mean in 68% of cases = 1 standard deviation, the resistance will vary by +/- 1%, or does it mean in 95% of cases = 2 standard ...
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3answers
287 views

How to calculate measurement error in a voltage divider?

I'm trying to calculate the measurement uncertainty of the voltage represented by the ADC in +/- V or % of a voltage measured across R2 of a voltage divider. What would be the general way to tackle ...
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1answer
79 views

Help with possible errors on LM306 datasheet circuit diagram

Not sure if this diagram has some errors like missing nodes at wire crossing. There is an obvious one at a T-intersection but also I circled in red a couple other locations where nodes might be ...
2
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1answer
119 views

How to calculate measurement error in an exponentially non-linear sensor? (self made pressure sensor)

I'm trying to calculate the measurement error from a home-made pressure sensor which I have in a voltage divider circuit. It has the same negative exponential non-linear resistance characteristics as ...
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2answers
784 views

How do I resolve the following error "Verify failed. [ Pgm ] at 0x0, expected 0x00002805, got 0x00002807" in MPLAB X IDE

I recently decided to get into learning how to develop embedded systems, using MPLAB X IDE and literature available on microcontrollers. The vast majority of which referenced the PIC16F84 and as such ...
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2answers
151 views

Errors in VHDL code

The VHDL code was written by me for a 4-bit PIPO DFF register. I have been encountering some errors when i did so. Kindly check the code and errors below. ...
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0answers
44 views

i2c : When writing to Slave Read 255 seen on bus

I am using Renesas RH850 controller in which I am writing 48 byte of data to slave device (Ublox IC) over i2c every 100ms and sometimes I can see 255 in between my data transfer which results in ...
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0answers
37 views

Laser-Doppler Velocimetry. Math/measurment problem

My team of 3 were tasked to measure the speed of a disc with a small hole on it using laser-doppler velocimetry (measurement and sensor technology class). After doing the measurments and writing them ...
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0answers
67 views

SIM 7600ei AT command error while sending GET request

I am using the SIM7600ei module with a 4g LTE Sim. I am successfully able to get the IP address. ...
0
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1answer
46 views

Issue with circuit board implementing temperature circuit

I have not got a lot of experience with PCBs, but I have moved a breadboard circuit to a PCB and I am seeing an issue. The objective of the board is to sense temperature. When the circuit is on the ...
3
votes
1answer
229 views

VHDL Aggregate on Left Side of Assignment : Error in Simulator

I'm designing a counter with a combinational carry out (not registered). To do this I have a concurrent assignment to create the unregistered sum with carry by extending the unsigned input before ...
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0answers
227 views

Contention error 1 or 0?

why these AND gates are getting no output. I confirmed all the connections. The first and gate is getting 0 and 1 as an input but there is an error in output. Can someone help? Urgent
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0answers
31 views

could anybody help me resolve this error?

library IEEE; use IEEE.STD_logic_1164.all; entity select_assignment is port(x1,x2,x3,x4:in std_logic; f1,f2:out std_logic); end select_assignment; --CREATE ENTITY architecture Behavior of ...
1
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1answer
36 views

Sketch upload fails [closed]

I am using a DFRobot Bluno micro-controller and Arduino v1.8.13. I get the following error message no matter what code I try to upload. I don't know what the issue is, any help is appreciated. ...
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1answer
103 views

Source of error DAC - ADC reading

I am testing my new PYNQ Z2 FPGA board with an external DAC and ADC connected. The datasheet for the converters says they are 12 bit, they are able to differentiate between 1 mV and has a range of 0-2 ...
1
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1answer
260 views

Why does the voltage value on the RESET pin of my microprocessor not go high?

I am facing an issue that I do not understand. I am using a STM32F030K6T6 microcontroller with a capacitor X7R 0603 100nF 10% 50V connected to the ground, whose the value corresponds to the ...
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1answer
52 views

Unknown error in Verilog

I am currently getting an error saying that my "counter_2" is not a constant. I am also getting a syntax error when I use "<=" with my counter_2. I've attached screenshots of my ...
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0answers
24 views

EAGLE - Suddenly getting errors about "objects extend outside board space"

Eagle 9.6.2 Standard License Windows 10 64 bit. Very strange. Suddenly I'm getting an error whenever I try to place components in any quadrant but quadrant 1. I am dead in the middle of a project ...
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2answers
139 views

What is the practical probability of a bit getting flipped during transmission?

We know that Coding Theory depends on the fact that the probability p of a bit flip must be less than 0.5. From Fundamentals of ...
2
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2answers
1k views

Why is my basic DAC incorrect?

I tried to make a basic R2R digital to analog converter in a simulator. Even with all bits set, I get an output of 4.98V rather than the 5V I would expect. I expected 5V since so many online resources ...
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1answer
28 views

Removing STM32F4xxx based HMI from CANBUS puts the network in BUSHEAVY state

I have a CANBUS with 3 devices on it. A PLC (CAN IO 14+, HAWE), a HMI (Barth DMA-20) and a 6 button CAN enabled button panel (Greyhill). The issue is, when I remove the display from the network (...
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2answers
391 views

Flash Not Erasing

I'm trying to erase a single Flash page with the help of the standard HAL library, but it does not clear the page. I've never done that before. More details below. Resources: The used microcontroller ...
0
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3answers
115 views

What is the impact of unhandled exception on microcontroller peripherals?

I always assumed that when an unhandled ARM exception occurs (i.e segfault), the microcontroller just stops executing code. This assumption comes from debugging observation: most MCU I worked with ...
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1answer
41 views

Is error due to sensor tolerance random or systematic? [closed]

Welcome all. It might sound like basic question however it is question worth asking.

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