What kind of microcontroller might this be?
Hi all! I want to copy this small circuit. It is a led flasher that also can have a steady beam. I'm told the only component probably is a microcontroller. My question is, what kind of small, and very...
View ArticlePIC Manchester coding for use with 433MHz modules
The code with example programs is at https://github.com/marti184/PIC433 Hello, I've recently done a project involving 433.92MHz cheap transmitters (the ones that cost approx. 1$ for a pair), and since...
View ArticleCopy/edit 95020WP and 95128WT
Hi all, Im brand new to this forum and electronics in general. I have two devices - 95020WP and 95128WT that i need help with. Basically, I would like to start by reading and copying the entire...
View ArticleStepper drivers - 4 ports, single driver
I'm not sure if this exists or not, but what I'm looking for is a stepper driver that has ports for four motors, but will only drive one motor at a time. Basically I'm looking to convert my 4 channel...
View ArticleDS3231 RTC Enhancements
I have added a button to increase the minutes or seconds of a DS3231 module by 1 (one) each time it is pushed: Code (ASM): Increment movlw 7 addwf min_sec,w ;test if low...
View ArticleBeagleBone Black Home automation Voice control AI (like cortana)
I have a beagle bone, so I wanted to create a home automation system which includes an AI [like cortana] which would do The stuff we ask it to do via voice. so any body guide me on how to make it.
View ArticlePIC18F4550 dont start
I have connected used PIC18F4550 in one of project. Problem is PIC never start up. In start of code in main function, i have toggled a pin continuously. I want my system freq to be of 4Mhz. There is no...
View ArticleWill This Circuit Work - SOS Flasher?
My intention is to have a small circuit board that can either be used as a torch or through a program in the PIC will flash the SOS code. The programming side is no problem. I've got that almost done....
View ArticleWhich developing board to use when learning STM32
Hi, I am a newbie for STM32, who can tell me which developing board is best to use when learning STM32 ?
View ArticleHow can I process video from camera module via FPGA to Android Device
Hi everyone, My main goal is to try viewing live video from the camera module to an android device via wifi with an FPGA board. I'm having a hard time trying to figure out where to start, perhaps...
View ArticleTwo Peak detection and extraction of timing information in arduino
I want to use arduino to detect peak and extract timing information. As shown in image attached i want ST,T1,DT to be detected using arduino. Detealis about signal frequency:1-2Hz, Some noise exists....
View ArticlePreventing delay() from blocking programs - Arduino.
I've got a confession, I don't have an Arduino and have never programmed one but http://www.allaboutcircuits.com/projects/build-a-desktop-industrial-automation-trainer/ has caught my eye, as have many...
View ArticlePrototype plaform with microcontroller
Hi All, I am in the process of designing a board to evaluate some sensors. I want to design a board that can show up as a comm port on the PC. So I can us simple python(py.serial) to communicate with...
View ArticleRe-statement of I2C problem.
First posting of this went to "create thread" after I hit return (or maybe CTRL-RTN) after my first sentence. Anyway. Here is the real issue: We have a design where we are using the I2C embedded in the...
View Article5-Channel ADC 2MSPS to USB
hi engineers and tinkers, I am looking for a 5 Channel ADC with 2 MSPS (not strictly, can also be more) that I can connect to my computer via USB to process sensor signals in real time. The input...
View ArticleI2C Seems to need more pullup resistance than normal
We have a design where we are using the I2C embedded in the HDMI port of a motherboard to control other functions of the display.
View ArticleIncrement PORTDbits.RD0?
Hi all, Does anyone have any code ideas on how I can increment through specific ports in a while loop? This is the code: Code (Text): while (p<8) { int j = 0; int k = 200;...
View ArticleHelp for 89c2051 circuit assembly
Hello, I am working on my circuit in which I am using a 89c2051 controller. On PCB I have connected following pins to controller 1)Vcc 2)Xtal1 & xtal2 to oscillator and capacitors 3) GND 4) All...
View ArticleAT89S52 Software Generated Interrupt
I am trying to generate an interrupt via software in an Atmel AT89S52. It's my understanding that I can set TCON.1 to generate a software interrupt but, for some reason, after I set it, it's not...
View ArticleNet has fewer than two connections in orcad
Hi All I am working in schematic design in Orcad. When I Checked the DRC rule it is showing the error. net has fewer than two connections in VCC and ground. Can somebody tell me how to solve this...
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