How to save an area from a TFT screen connected to a MCU?
Hi everyone!, I am working with the STM32 MCU family. I have some TFT with different graphics drivers (1.8 "ST7735 - 2.4" ILI9341). I tried the wiring and everything works fine. To draw text on a...
View ArticleCan't get SPI to work on Arduino UNO (in a simulation)
Hello everyone, I just learnt how the SPI protocol works, and wanted to try it out on a simulator before doing it on hardware. So, I wrote some code for communicating between two UNOs and tried to run...
View ArticleWhat is DV Testing in Embedded Systems?
Please consider Advanced Drive Assist System(ADAS) Electronic Control Unit(ECU). This ECU has several sets of Microcontrollers. Does DV stand for Design Validation or Design Verification? What does DV...
View ArticleNodemcu analog input very inaccurate - sometimes
first post, bear with me... I have a Nodemcu and I try to get a thermistor sensor to work using Esphome. A fixed resistor (1kΩ) and a ntc thermistor (4.7kΩ at 25degC) as a voltage divider circuit....
View ArticleCustom Microcontroller Design Verification And/Or Advice
I'm working on a custom microcontroller design based largely off of NXP's K64 FRDM boards as part of a larger project, and recently (despite the date on the schematic) finished what may be considered...
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Why the CAN BUS ID are different byte length
I logged some CAN BUS date from a power wheelchair, there are some IDs with two bytes (standard data), and others with four bytes(extended data), what's the different between them and does this mean...
View ArticleBattery Backup System
I am building a 150 plant hydroponic system and want the piece of mind of a battery backup. Brand new to an Arduino, but have played quite a bit with a PI. I purchased an Arduino and plan to use it as...
View Articlekernel programming in job requirement
Hi What employers are looking for when they mention kernel programming in a job requirement Like what do they expect to do regarding "kernel programming" Thanks
View Article[SOLVED] Can't get SPI to work on Arduino UNO (in a simulation)
Hello everyone, I just learnt how the SPI protocol works, and wanted to try it out on a simulator before doing it on hardware. So, I wrote some code for communicating between two UNOs and tried to run...
View ArticleUsing crystals with PICs
Hi, I am in the habit of using crystals when making PCBs with PICs. What are the reasons for using crystals, and are they really necessary? Camerart.
View ArticleWhich Hardware Emulator and Development IDE/Editor is best for Embedded...
I am new to the embedded development area and doing self-study in this area (I am already from Computer Science background) but I have few doubts and need guidance on the development and testing tools...
View ArticleSingle wire communication
Hi All, Is it possible for two arduinos to communicate over a single copper line(with no common ground) like a simplex telegraph or something.
View ArticleUSB Mini Connectors
I want to find a small connector for linking a PICKIT3 to a circuit board. This needs five pins. My eyes lighted on the USB mini sockets which have five pins. The problem there is that I can't find any...
View ArticleHow to use an STM32 to flash a bios chip with a bin or hex file?
My old PC motherboard's bios chips were corrupted and it's an old 1155 socket so there were no available replacements. I believe I have the necessary tools to attempt to erase and reprogram the chip,...
View ArticleSTM32 Timer Output compare not working proper
I am using STM32L476 Nucleo board and cubemx. I want to use Output compare channel 1 for timeout of 2ms. i have configure the timer but timer is not giving interrupt for Output compare. i am getting...
View ArticleArduino and ESP-01, voltage divider and pin pulled high
I have an Arduino Uno connected to an ESP-01 to provide a wifi connection. A simple voltage divider (2k and 3k resistors) converts 3.3V on the GPIO pins on the ESP-01 to 5V on the Arduino pins. The...
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ARBITRATION FIELD in CAN BUS
What is arbitration field in CAN BUS . Does it use to identify each nodes on CAN Bus? CAN bus has two signals, CAN high (CANH) and CAN low (CANL) In diagram CAN uses an 11-bit identifier, which comes...
View ArticleProteus ISIS 7- I2C debugger
hello everyone. can i use a sensor with i2c and a i2c debugger just to see if it's working? and how? (without the microcontroller) for example i attached a photo. thx!
View ArticleESP32 bluetooth baud rate
Hi, I am trying to communicate between ESP32 and MATLAB. I am able to establish communication correctly. However, I am unable to achieve desired sampling speed. With my calculations I have computed...
View ArticleADC on a pic 18f
Hello i have been trying to lean how to do ADC on PIC i have which is 18F2550, after watching many tutorials & reading the data sheet i came up with this C source code. i have been on & off pic...
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