Weird microcontroller behavior
I have a device with a socketed microcontroller (Winbond W78E054B40PL) which I am trying to read with my universal programemr. Whenever I try doing so, the reading is successful, but it's all blank....
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si7021 i2c command sequence
Hello, From the manual shown bellow the address is 0x40 the measure temperature command 0xE3. From the readback diagram first master sends slave address and measure command,then We send slave Adress....
View ArticleWays to connect Master Pi and Slave Pi ?
Hi, I am planning to connect 3 Raspberry pi and 2 Arduino. One is Master pi and the other two pi's are the slave. Slave Pi’s and Arduino's are connected to sensors. Master Pi should connect with the...
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game of flags in si7021 I2C
Hello, given the following diagram,for example TXBL rises when we send a frame TXC rises when we send the whole buffer. and when they rise we can call a function.But the case bellow is very...
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puzzled about BGA package, lot more Flash and RAM
Hi team I am puzzled about this, why the BGA one has so much more Flash and RAM???
View ArticleFunctions to operate a 7 Segment display on a PIC Controller
About 3 years ago i was working on a project that needed a 7 segment display. At that time i was just learning PIC 8-bit mcu's, MPLABX, XC8 and C in general. A lot at once. I put a Mock up of what I...
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PIC32MK MC QEI example
Needed to build a tester for some high resolution QEI encoders. The speed and number of counts per revolution favored a hardware motor control solution for the A/B/Index signals vs a software solution....
View ArticleShould I choose arduino or mbed for my avionics system?
I will prepare for model rocket competition in Turkey. I am beginner both them. After i evaluate your opinion, i will work either arduino or mbed. My avionic system will include Gyroscope , GPS,...
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generate a square wave with double pulse using arduino
Hi everyone , I would like to generate a square wave with double pulse like the one shown in the figure using arduino. any help ? Regards,
View ArticleDying for a 1 wire switch IC similar to Maxim DS2413
Well , I was looking for a slave addressable ic for 1 wire protocol which can control a single GPIO. The RS2413 is the most right IC I could find suiting my needs (however I need only 1 gpio). But in...
View ArticleHow to connect ESP 8266 wifi modular with local area network?
I am working on an ESP8266 ESP-12E WiFi Module to turn an LED on and off. Yes, I was able to turn on/turn off the LED with the help of Wifiserver and NodeMCU. The problem is I want to connect the...
View Article8085 Microprocessor inadvertent addressing
I'm working with the 8085 for hobby stuff. I'm using a standard 74HCT138 decoder and the straight thru 74HCT573 version of the 373. Having built a few I notice at the end of instruction cycles I get an...
View ArticleLoading CCS C projects in MPLAB x
Hi folks, I made a programming project for PIC16F6798 in CCS C IDE. Now, I am wondering on how can I load the project in MPLAB. I know there is a CSS C compiler in MPLAB (and I installed it) but I...
View ArticleArduino Program Error Code
What seems to be the error in this program? I couldn't be able to run from the codes given by the Youtubers. This is the code. Code: //Arduino Bluetooth Controlled Car //Before uploading the code you...
View ArticleComparison between signed variables in PIC18 assembly
Hello. The code below compares a 16 bit and an 8 bit variable. What is not clear to me is the part after the bz diff, where xorwf and xorlw 128 are used. What is their function? Any...
View ArticleI am looking for someone who has programmed controllers (ATMEGA8)
Hello, I hope everyone is fine I have a project that I need someone to program for me The project consists of - atmega8 - 7 segmant 3digi common anode - two button sw - 3 leds - 3 relay 5v I want to...
View ArticleWhy LED is not turning OFF - 8051 Timers
Hi I want to ON/OFF LED for 500 ms. I have written a program that suppose to ON/OFF LED for 500 ms Environment : AT89C51, Keil, C: #include<reg51.h> sbit LED = P2^0; /*LED connected at output Pin...
View ArticleATtiny84 usb interface help.
I am trying to build a small development board with the ATtiny84, but I am having trouble figuring out how to wire USB into it. The only material I can find on it suggest that I need to buck the input...
View Articlearduino delay instruction
In arduino the 'delay' instruction is for milliseconds. Does it work for fractions of a ms. e.g 6.5ms? or say 0.5ms? I know you can use microseconds but it happens that milliseconds is more convenient...
View Articledelay in arduino
In the references in arduino it does not say if 'delay' or delaymicroseconds has to be an integer ie a whole number without any decimal points. Does anybody know if it can only be an integer?
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