non-contact real-time heart rate monitoring system using Raspberry Pi 3 Model...
Hello, Is anyone working on the use of the Raspberry Pi Camera module as a heart rate sensor? I am new to using Raspberry Pi. I want to build a non-contact real-time heart rate monitoring system using...
View ArticleArduino system
hi all Can you get an anduino system that can control a pneumatic piston to fire on a repetitive timer?
View ArticleARDUINO UNO & ESP8266 ESP-12E WIFI Development Board.
I made scrollig led matrix using Arduino uno.( refer attached picture) I'd like to connect ESP8266 ESP-12E WIFI Board to Arduino uno. So reciving data from wifi, present real time, weather data can be...
View ArticleMy New CPU / Computer Video: Hardware Stack, Compilers, Java Simulator, and A...
My latest video in my Logisim CPU / Computer series. This one adds a hardware call stack to make subroutine calls easier. It also uses a modified version of a compiler (LL(1) parser) I wrote in a...
View ArticleProgram to check three Switch button's
Hello I have three button's and two light's and one Fan. I want to make light1 ON if switch 1 is pressed otherwise turn of light 1. turn ON light2 ON if switch 2 is pressed otherwise turn of light 2....
View ArticleAT28C64B-20PC doesn't write
Hello everyone, I've been working on a project lately and needed to program some ROM for it. As I don't have a programmer, I made my own using an Arduino Nano and shift registers, it's almost identical...
View ArticleDatalogging in computer
Hi! I have a project in which I would like to record 2 Voltage values. I thought of getting 2 ADC components to transform this voltage value into a digital value (with samplig rate of 10~100 kS/s)....
View ArticleIntegrator and Voltage Follower Testing
Hi there, Good Day!! I am going to use integrator and voltage follower ICs in my project. I know that when the voltage applied to integrator, the voltage ramps up or down based on the input and the...
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Modular Controller build with Arduino (Teensy 3.5)
Hello all! New to this forum so please excuse any formatting issues. Anyways, here's a picture for starters: FYI, I'm not an electric engineer, very little understanding of circuity apart from...
View ArticleProgramming micro controller of massage chair
I would like to create a new massage mechanism and would like to modify from an existing massage chair. May I know what is required. Thank you. Best regards, Adam
View ArticleConfiguration of LCD with Linux
Hello, I am trying to launch thePH320480T009-LAC03 tft with an IMX7 that uses an Yocto image. The driver that uses the tft is ST7769S, however the kernel of yocto does not provide this driver,...
View ArticleArduino restarting while controlling a mosfet with PWM.
As the title says, im having an issue with my arduino restarting whenever theres a big load attached to the mosfet. The mosfet is being controlled by the D3 pin with PWM. An LED works fine, but if i...
View ArticleSPI ADC/DAC with 8051
Hello everyone I have small confusen on SPI ADC/DAC with 8051. I think SPI is serial communication protocol and ADCs (analog-to-digital converters), DACs (digital-to-analog converters) is circuity....
View Articlemerci
s others have shown you for the binary integer, keep dividing the decimal integer by 2 and build the binary integer from right to left from the remainders. For the fractional part, multiply the decimal...
View Articleselection of develpoment boards
Hello all! i am in a requirement of a development board , this can be beginners level. I have already purchased ARDUINO UNO and now i want help in selecting a development board from the following...
View ArticleElectric throttle
Hello there.. I would like to modify my ultra light engine by replacing the throttle cable with a servo - stepper motor and a potentiometer in the cockpit to control the throttle. I'm not sure if...
View ArticleRaspberry pi zero w led matrix
i have a new project i want to build using this display https://www.google.com/search?q=8x8...AUICygC&biw=1366&bih=653#imgrc=AXtsb8LxfLLSVM: i have it working on the arduino scrolling messages...
View ArticleESP8266/Arduino 24v DC common ground?
Attached is a picture of the relay module and a crude sketch of my design. View attachment 39753 The 24v power source powers the 24v relay module and a receiver PCB. The RX PCB receives an external...
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