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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44 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 ...
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2answers
105 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
48 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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29 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 ...
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0answers
13 views

Error showing the amperage in PSIM

I have uptadated my version of the program PSIM and I have noticed something. In a simple circuit, I used to click on show probe value during simulation to show the amperage in that point. With the ...
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0answers
36 views

pmos latch switch

We have a power distribution board for our robot that is responsible for switching power to various modules (controlled via stm32 gpio). The first implementation was pretty simple. we used a high side ...
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1answer
35 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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0answers
10 views

Code error: platform.txt from core 'DFRobot Boards' contains deprecated recipe.ar.pattern

I've been trying to program a DFRobot Bluno board with Arduino software recently. It worked fine before but now I keep getting the following error: Arduino: 1.8.13 (Windows 10), Board: "Bluno M0 ...
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1answer
39 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 ...
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1answer
94 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
45 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
21 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
82 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 ...
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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
21 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
54 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 ...
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3answers
72 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
39 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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1answer
127 views

LM358 OPAMP non inverting amplifier DC errors

Trying to amplify IR sensor 40mV DC output using LM358 noninverting amplifier circuit. Selected resistance as R1 2.2K and feedback resistance, R2 51K. Got output voltage 0.8V. Measured output voltage ...
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1answer
47 views

What is 1.5%rdg + 4dgt for 15,23 V?

Where "Rdg"is for reading and "dgt"is for digits. So, 15,23 * 0,015 = 0,22845. Rounding to most significant digit it's 0,2. So is this correct? $$15,23 \pm 0,2$$ Since 4dgt is smaller we ignore it. ...
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1answer
122 views

Why is the verification of Thevenin's theorem more accurate than that of Superposition theorem?

In my first course on Electrical Engineering, we have an experiment in the Electrical lab that asks us to verify the Thevenin theorem and the Superposition theorem and cross-check our results with our ...
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1answer
236 views

OpenOCD throws “JTAG scan chain interrogation failed: all zeroes” error

I am trying to install openWRT on a router using my Raspberry Pi Zero. I am following the exact steps as explained in http://www.alfredklomp.com/technology/experia-v8/ However, for some reason I keep ...
6
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2answers
972 views

What does m% stand for?

What does m% mean? Like in this datasheet from TI at the gain error graphs: http://www.ti.com/lit/ds/symlink/ina149-ep.pdf?&ts=1589388038122 Is it supposed to mean per-cent-mille (10^-5) or per-...
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0answers
28 views

problem in defining parameters in CST Suite Studio

I want to define the thickness of a material as a parameter in CST Suite Studio. When I give the integer value to the parameter, the model is designed correctly and has a thickness, but when the value ...
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2answers
46 views

Calculating uncertainty in a current divisor

I had the following exercise to do for college: I designed an analog ammeter exactly like this: simulate this circuit – Schematic created using CircuitLab The idea is to design an ammeter ...
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1answer
67 views

How to model voltage controlled switch in LTSpice?

Having trouble making a Buck converter using two complimentary switches in LTSpice. I've got everything laid out exactly as perscribed, but when I run I get the following error: "Can't find ...
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0answers
14 views

Q-value in APD photodetector

I try to calculate the Q value of APD photodetector with these parameters: $$R \hspace{0.1in} (response) = 1$$ $$M \hspace{0.1in} (magnification) = 10$$ $$k \hspace{0.1in} (ionization \hspace{0.1in} ...
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1answer
571 views

ERROR(ORPSIM-16103): Invalid value when attempting AC Sweep in PSpice

When I attempt to run an AC Sweep in PSpice it gives me an error
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0answers
39 views

Is the quantization error and random error included in the of-range error for multimeters?

When I am looking at a datasheet for a DMM (Digital Multimeter) to calculate the accuracy of a measurement it specifies two error sources: of-range and of-value (also called of-reading). For example ...
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1answer
83 views

Proteus oscilloscope errors

i have this homework in proteus , but because of the virus my theacher can t explain very good how to use this program.I have this circuit and i can't play it.I attached the circuit and the errors ...
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1answer
173 views

Error (10500): VHDL syntax error at ZAD1.vhd(7) near text “;”; expecting “:”, or “,”

So basically I am doing the 7-input NAND gate and the syntax error keeps showing up (Error (10500): VHDL syntax error at Router.vhd(39) near text "port"; expecting "(", or "'", or "."). ...
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1answer
231 views
0
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1answer
30 views

How do I interpret the zero-g level change vs temperature specification for this accelerometer?

This is an extract from the datasheet of the MPU6050 sensor. I was expecting the level change vs temperature to be in units of mg/oC. Instead, as you can see, the temperature range is specified ...
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1answer
48 views

Timeout error in Quad SPI

I am trying to communicate with external flash via quadspi but this time with cubemx and hal libraries. Everything seems to be working fine unless I write something bigger than 0x03 to address ...
0
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1answer
43 views

Sensor Error Adjustment

I have been asked to improve the high end accuracy of a pressure sensor (Without modifying hardware). I have collected data from 30 samples and found a trend to the error. My question now is if it is ...
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1answer
49 views

ADS AEL: operand: ee_boolparameter value required whenever I try to compare voltages

I'm not very experienced with Keysight's Advanced Design System. I am trying to use the if statement in my user-defined function to compare two volage values and ...
3
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1answer
104 views

ADC issue - possible non-monotonicity?

My ADC (two of them under test - the Analog Devices AD7676, and the Maxim MAX11108) is a 3 Ms/S SAR. The device is powered and referenced by a precision 3.3V reference device (100mA max). The ...
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1answer
242 views

The error “requires SystemVerilog extensions” while declaring an error

What's wrong with the following code? The array "FIFO" is declared correctly, but an error appears. Can you please help how to fix this? ...
0
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1answer
39 views

Connecting a CAN node results in infinite errors on the bus

I'm developing a device which is controlled by the received CAN messages. The device should be eventually mounted in a vehicle. The device receives messages only. It doesn't send any messages on the ...
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0answers
16 views

Error % for readings of average-sensing multimeters

Question: What is the error % in reading the voltage of a Square wave (1 Vpp) with an average-sensing multimeter with a half-wave rectifier, compared to a TRms multimeter The answer seems to be 11.1% ...
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2answers
71 views

Voltage divider resistor PN balancing

Refer the representational schematics for voltage sensing by ADC (SAR). I read somewhere to balance the P and N lines add R3 = R1||R2. How come R1 and R2 parallel combination could be considered as ...
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0answers
46 views

Estimating FFT error

I'm interested in trying to estimate the worst-case error when using a particular DFT implementation (CMSIS) and an ADC and voltage reference with known error bounds. I think that I can work out the ...
0
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1answer
241 views

Initializing to MicroSD Card with Arduino produces error code 0x43, 0xff

I am trying to interface with a 32GB MicroSD card with an Arduino Uno, but the code consistently fails at the initialization stage. Below is my schematic (sorry for the horrendous schematic, I'm not ...
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1answer
35 views

NOT valid mode type SIMetrix from Netlist

I am trying to run PSpice netlist in SIMetrix .cir and it says NOT valid mode type SIMetrix from Netlist, do we have to add any command other than this.
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2answers
61 views

Error deriving temperature from thermocouple amplifier

I'm using a K-type thermocouple to read the temperature of a 3D printer hot-end. To amplify the thermocouple voltage I am using the Analog Devices AD8495 chip. This chip is mounted on a custom-made ...
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1answer
613 views

What does a syntax error mean when it says: “near text ”else“; expecting ”end“, or ”(“ ”?

I just don't think the word "near" is specific enough. Am I missing something before or after the word "else"? I'll put the code below and the errors after it. Thanks in advance! ...
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0answers
489 views

IR Temprature MLX90614 Sensor Diffrent behavior based the I2C Scanner Checking

I need to work with Temperature MLX90614 on Arduino, when i used it's default library code, in bread board sometimes i get correct answer, so i used the soldered circuit for it like this: in this ...
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0answers
98 views

FTDI Chip Windows Error Message “USB device attached malfunctioned and windows does not recognize.” Design Error?

My PCB has a FT230XS-R USB to UART communicating with an AVR chip. My first prototype board worked perfectly except for the USB problem stated in post title. I triple checked everything. Can NOT find ...
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1answer
1k views

Removing modelsim error

I am trying to simulate a simple inverter in verilog using modelsim 10.7 version. While compiling the code I am getting the -novopt error (error code 12110). As per user manual page 80; the -novopt ...
3
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2answers
1k views

How to solve Keil compiler 'Error: L6218E: Undefined symbol' on STM32

I am trying to run a simple tutorial (external interrupt example) on my NUCLEO-F746ZG board. I use STM32CubeMx software version 5.2.0 and Keil software version 5.28.0.0 as compiler. I get the ...

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