Choosing microchip for my simple project
Dear all, I want to choose a simple microchip to program using arduino. All I want to do is when it detect power on it should on the relay for say 15 seconds and should go off. I have pic12f683 with...
View ArticleUART ft232r FTDI to PIC 16f1829 question
Hello, I'm able to connect my Mac to serial devices (e.g. blemate2) using the ft232r, however I'm having issues getting my PIC 16f1829 to connect to the Mac via the ft232r. When I send a byte from...
View Article***20M PICAXE Ohmmeter Issues***
I've built a circuit that is supposed to shine certain number LEDs depending on the resistance of a resistor in the circuit (R1). I did this by setting up a voltage divider and measuring the output...
View Article4-20mA Current Receiver with RS232 or USB
Can we use 4-20mA Current Receiver with RS232 or USB if yes which one is more efficient ???
View ArticleMaster slave communication problem in RS485
Hi, In my project RS485 interfacing with UART communication. I'm facing a master slave communication problem on RS485. i.e The RS485 is working good on one master and one slave. But going to one master...
View ArticleBasic of HC-05 Bluetooth Module
Hi, As I know this is a digital bluetooth TRx module and we can control it with our android using suitable app too. As it communicates with digital encoding signal of bluetooth, does it have limited...
View ArticleMaking a Wireless Credit Card Reader Work Correcly
I own a car wash and have been working on implementing a new credit card system that is make by a company named, Nayax. Nayax makes a nice card reader that works with cards (swip), cards (chip and...
View Articlewhy there is two MCUs in TI stellaris dev board
just bought TI stellaris DEV board and saw two MCU there, so wondering why two
View ArticleGPIO not responding to movwf PIC12F675
I'm new to assembly language on pic microcontrollers and am just trying to control an IO port via GPIO as the datasheet says. Here is my code:...
View ArticleHow to implement EERUF with an STM32F303K8?
Hello, Here is a paper about EERUF (error eliminating rapid ultrasonic firing). Page 8 is the implementation....
View ArticleAn AT89LP51ED2/RD2/ID2 device programmer
Here's a not-so-little project that I had to complete so I could work on a set of other important projects. A couple of years ago, I bought a $69.00 dlls programmer from MikroElektronika that (they...
View ArticleArduino pro mini problem without ftdi connected
Hi I have an Arduino pro mini powered by a 5V 2A adapter connected directly to the 5v and and pins. I am using an external Arduino Uno (without the MCU) to program the sketch directly to the pro mini...
View ArticleBridge Dragino Yun Shield WIFI connection to Ethernet
Hello! What am trying to accomplish here seems to be a bit beyond my means. I want to build a wireless robot with a live video stream on it. I want to use a raspberry pi running motioneye (which i have...
View ArticleHow Can I use a 3.5" RPi Display as Second Laptop Monitor? (Link to Specific...
We bought one of the 3.5in versions of these: https://www.ebay.com/itm/172344939647?ul_noapp=true to use as a secondary display on our Dell Inspiron running Ubuntu 16.04. Does anyone have any tips for...
View ArticleHow to implement this schedule to fire 6 ultrasonic sensors?
Hello, I have 6 ultrasonic sensors which I want to fire according to the following schedule: [Table attached] How can I implement it by using timers, interrupts, or tasks in RTOS? It's a method to...
View ArticleOpto Debounce.
Has anyone had experience reading a slot opto detector with Pic18F? I am wondering if it has been found necessary to do SW de-bounce on these typically. The disc is a 4 slot with 5ms between pulses,...
View ArticleP only = Fuzzy Logic?
I see a few comments regarding fuzzy logic today. I am implementing a DC drive using this premise, P =1 only, (not PID) Would it also be considered fuzzy Logic? The feedback is via a slotted opto wheel...
View Articlehow to detect the zero crossing for an AC input signal
I want to determine time at every zero crossing for 5V AC input signal using the PIC micro-controller.in my search i found that I have to use interrupts to detect when the sine wave crosses zero. when...
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Best board for Prototyping - with a mass produced product in mind.
Hello all. Awesome forum, hope it turns out to be a mine of really useful information Quick question, hope someone more knowledgeable than me can assist. Okay, so I have this idea for a commercial...
View ArticleMCU against Software Attacks
Oflate there has been a lot of interest in Microcontroller community about security with ARM TrustZone for MCUs. TrustZone is deemed to protect MCUs against software attacks. My question is what are...
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