Magic Switch IOT Project
Hi, I'm working on an IOT project, based on a html switch that is able to pay my far away sister's unpaid bills ...by just a "pressing on" action. Indeed,it sends a HTTP POST request to a server...
View ArticleSwitching between two 5v/3a USB power supplies, with little to no delay
Hello, I am currently building a raspberry pi 4 system that will be placed inside a vehicle. What i want is that whenever the car is on the raspberry will receive power from the car charge port using a...
View ArticleProblems with SAMD4S with WILC1000 SD and example project from ASF
Hi, I am trying to program a SAM4S board with a WILC1000 SD connected on its SD slot to act as an access point. I use Atmel Studio 7.0.2389 (also tried 2397, 1931, 1645 and 643). There are a lot of...
View Articletea5767 fm radio module, query.
Is it possible to write a function that can skip the occupied frequency in the library then call it out? for example a loop that goes from 88-108 endlessly but skipping the occupied freq.
View ArticleA couple of newbie questions about PSoC
So I have learned enough C++ to be dangerous. @danadak or anybody that knows. I need to know the number of erase/program cycles available to the PSoC CY8C5888LT1-LP097? I ask this because I have to...
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Timer at 16F1509
Hi, Have to make a little MCU with some small things. Need to have a indication when ex 15 min is reached. Have planed this., Use a 16F1509 ( Spare one i have MCU Running at FOSC 8 mhz. use TIMER2...
View ArticleGPS Chip L86 output junk data on Serial Terminal
I am using L86 gps module. I was trying to get the module working with USB to serial converter. When i do the following connection RX (GPS) <--> TX (USB to serial) TX (GPS) <--> RX (USB to...
View ArticleARM Kinetis-Based Custom Microcontroller Design - USB Programming Interface?
First-time poster here, so if this is asked in the wrong location, please redirect me. I'm currently working on (attempting) to design a custom microcontroller (or, rather, a form of embedded system)...
View ArticleWhat is Debug?
Merry Christmas! I have a TI LaunchPad Tria C evaluation board (EK-TM4C123GXL). Programming it with Energia. On the evaluation board, there are 2 TM4C chips, one is debug and one is the device. The...
View ArticlePic32mz pin toggle speed. Need help
Hi all. I am New on this forum. I have designed and created a pcb board with mcu pic32mz2048emf-100. In mplab i use harmony 2 to configure speed to 200mhz. I use internal 8mhz osc. I check with my...
View ArticlePIC16F1615 simply won't blink
While I'm waiting for my Curiosity HPC, I'm trying to get this thing to blink. No success. I had a somewhat good run with MSP430, but PIC is not giving me any slack. I suspect that I am not using the...
View ArticleWhy SPI is faster then I2C
Hello I have read multiple posts on SPI and I2C and found that SPI is faster then I2C. I2C have only one data line, data would transfer or received on single bus where as SPI has two data buses, data...
View ArticleI2C Communication- STM32F407VG(Master) to PCA9554D(Slave)
Hi , I am trying to establish a I2C connection between STM32F407VG to PCA9554D using STM32 cube. I am using HAL libraries for the communication but i am not able to establish the connection . it is...
View ArticlePc and microcontroller rs232 communication error when 220v contactor switches
Dear all, I am doing a project in which pc and atmega32 communicate via rs232. The microcontroller send level signal and also receive command to actuate 220v contactor. Every thing is fine until I...
View ArticleESP8266 - Data Transfer
Hi, If anyone here is interested. I was evaluating the ESP8266 about ten months ago because it can be plugged into the STM32F769I-DISCO board, giving the option for the board to engage in TCP/IP...
View ArticleST-LINK and JTAG
I often see the terms "ST-LINK" and "JTAG" when reading documentation for various MCU development boards. The documentation seems to often assume that the reader is familiar with these terms and so...
View ArticleHow to handle multiple LEDs on usb device
Hi, im curious how to handle ,lets say 20-30, LEDs that could draw max 60mA each on USB device. As i know usb port could deliver about 0.5A and those used in full(white color) draw around 1.2A+ ......
View ArticleHas anyone used this book...
https://www.amazon.com/Designers-Guide-Cortex-M-Processor-Family/dp/0081006292#customerReviews Looks very detailed and informative, oddly though it has just a single review...
View ArticlePrecision servo control with ATTiny85
First of all, I know that the normal way to create 1000 - 2000 microsecond pulses is to use a 16 bit timer and I can do it with an Atmega328 without any problems. I just wanted a new challenge which...
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