Sending data from MCU to transceiver : problem with understanding the datasheet.
Hi, I will have to program a transceiver, it’s a SPIRIT1 from STMicroelectronics. I have to program it through an SPI interface with a MCU. One problem is that I don’t know how to send the data from...
View ArticleConfused by using JTAG
Hi Folks! JTAG raises my interesset and so i began to learn about it. But after many readings for weeks and many testings i'm frustrated because nothing seems to really work, or if, i don't know why...
View ArticleAny softwares to compare 2 hex files
Hi, I have two hex files i need to know whether they are similar or not. What are the software available to do that? These hex files are related to Nordic nrf51.
View ArticleQuestion on PWM input mode - STM32
I want to use PWM input mode to measure inputs signals up to let's say 1 kHz. My question is about the selection of the prescaler and the counter period that supports the inputs frequencies. My timer...
View ArticleRail to Rail sine wave out from arduino
Hi All, I am trying to design a circuit that would allow me to analog out a sine wav/sinc wav between -10V and +10V rail to rail. I would need to be able to control the amplitude as well as the...
View ArticleATmega328P USART with interrupts freeze
Hi, I'm new to this forum, so I'll do my best to describe my problem: The code below uses interrupts to receive the longest strings possible. It puts its content inside a linked list buffer, then...
View ArticleUsing GPIO0 AND GPIO2 on ESP8266 ESP01
I wan to use a ESP8266-ESP01 to control a servo. My idea is to use GPIO2 to control the power to the servo via a transistor as a switch and the GPIO0 to control the control signal to the servo. The...
View Articleindividual Ultrasonic transmitter & receiver making into single module
Hi I am trying to interface ultrasonic transmitter & receiver to Atmega 32 but i ordered transmitter & receiver separately I dont know how should make them into ultrasonic sensor module. Is...
View ArticleADC to measure battery voltage
I have a question regarding little bit maths, If I want to measure the voltage with adc and voltage range is between 0 - 30 V DC For example I have 8 bit adc and adc working with 5v DC 8 bit adc can...
View ArticlePIC24 Bluetooth Low Energy DK
Here is a quick (work in progress) demo of the BLECM board being used for a quick 'remote relay' application from a cell phone app....
View ArticleFree IO of microcontrollers
hi, dears. I have a question about the pins that unused in microcontrollers. I want to link all of them to each other directly and pull down them via a 100 ohms resistor. can direct linking of IOs make...
View ArticleHow to program Atmel CPLD - what software/hardware ?
Hi, I need a CPLD for a project, and as I already have an Altera USB blaster (clone), I sourced some ATF1504 from Microchip (the datasheet says it was compatible to Altera 7000 and 3000 series...
View ArticlePowering atmega from 6volts
I have a curiosity. I noticed that some batteries have more than 1.5v when full. Using 4 of them in series would exceed 6 volts (the absolute maximum specified in the atmega series of microcontrollers)...
View ArticleATmega328P TXEN0 and RXEN0, pins PD1 and PD0?
Hi, I've read the microcontroller's datasheet and programmed a sender and receiver of ADC data in the same ATmega328P. As I don't have two of them, my testing of both sending and receiving sides...
View ArticleHow many MCP3008 can be interface with Pi
Hello everyone We can connect eight temperature sensor's with one MCP3008. if I have 12 devices and I want to measure their temperature so I need 12 temperature sensor's to measure temperature of each...
View ArticleAdd fast 1Mbit or 2Mbit SRAM to Adafruit itsy-bitsy M4
Hello friends I have a very basic knowledge of electronics, I'd love to get help from professionals. I'm working on a project in arduino environment, the board is Adafruit itsy-bitsy M4 Express...
View ArticlePic16F883 Power on loop back problem
Hi I am trying to use a push button (held down) to complete a circuit and turn on a Pic16F883 Let me explain. The Pic is turned on by pressing a push button to supply 5v to a 2N3904 Transistor Base via...
View ArticleComplete I2C based project with source code
I think this is stupid question to ask on the forum but I feel this is a right way to take good start, so I did this question I am looking complete I2C based project with source code. I think, I should...
View ArticleMethod for full-duplex a large number of slaves
Hello all, I have an application where I need to have full-duplex over 100+ slaves. I will only be having 1 master in this application. Right now, I am looking at implementing CAN, SPI, or I2C. I am...
View ArticleArduino Uno Pin Compatible PIC Board, bad idea?
I'm trying to learn about computing, PCB Design, and C programming. I've built some things, had a couple very simple PCB's made, and I'm looking for something to make. I've got most of the way through...
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