High-level Design The goal of this project is to create an electronic flute. The musical instruments like keyboards, guitars, etc. have adjustable keys in order to play sounds at different scales. However, flutes are designed for only one scale and therefore need to be changed to play music on another scale. Hence, our electronic flute […]
Overview This is a building block project I developed to try out a few ideas. It decodes a 4-bit binary word to outputs that will drive a 7-segment LED display. Functionality is similar to the 7447 BCD-to-seven-segment decoder/driver IC however, because it’s implemented using a microcontroller, the segment control data can be customised to display […]
Overview A four digit decimal counter for the PIC 16F88 with the following features: Count up / down Reset Free running or hold on count over/underflow User count preset Over/underflow output Description This is a 4 digit decimal counter which can operate as a free running counter or in count and hold mode with manual […]
The original DMX512 driver project #800 is now redesigned to incorporate the optional address configuration switch on the main PCB. The no-switches in-band DMX configuration feature is still retained Double sided PCB has resulted in a more compact board size. Firmware has been updated to run a latest generation enhanced midrange PIC16F1823 processor.
Recently I acquired a 5M length of RGB LED strip using SMD5050 RGB LEDs. It has built in current limit resistors designed for operation from a 12 volt supply. Having thought this would directly attach to the Picprojects MOSFET RGB LED driver project I went ahead and bought one only to discover when it arrived […]
Overview In this project, we create a mesh network of PIC32 microcontrollers connected using ESP8266 wifi modules. The mesh network is able to fully connect itself through a variety of graph topology algorithms and is able to route packets through the network using a shortest path approach. It also exposes a very simple application layer […]
Want to build an RGB LED controller that you can program with your own custom sequences and effects? Then read on. The RGB LED controller has proved to be very popular project and has been the most frequently downloaded code on the site since it was made available. I’ve been contacted by people who have […]
PICkit 2 Introduction: There are many PIC programmer available, commercial and DIY devices. As Microchip introduces the new microprocessors the programming software got to be updated accordingly playing catch-up with the PIC manufacturer. That is the root of the problem with third-party PIC programmers. Microchip’s PICkit 2 is the low cost ICSP programmer for […]
Overview This adapter allows you to interface with your car’s OBD-II bus. It provides you a USB interface using the ELM327 command set and supports all major OBD-II standards: SAE J1850 PWM SAE J1850 VPW ISO 9141-2 ISO 14230-4 ISO 15765-4 CAN Hardware The adapter kit schematic is shown here. It is built around NXP LPC1517 […]
Introduction The webpage describes the development of an Audio Spectrum Analyzer based on PIC32 microcontroller with the following features: Real time speech signal acquisition Spectrum and spectrograph visualization of Mel Frequency bands Serial interface for forwarding Mel Frequency Band Power Spectrum coefficients Recording and playback of speech signal using serial RAM Spectrum Visualization on PC […]
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