Turn-key PCB assembly services in prototype quantities or low-volume to mid-volume production runs

Electronic Drum Controller Will be Your Good Music Companion

If you a die hard fan of Drums, I bet you must be excited about this unique and DIY eDrum too. The required components for this project: A PIC16F877 RISC microcontroller Two line (16×2) LCD with backlight Some amplifiers Twenty-two analog inputs Two digital inputs Twenty-two input gain potentiometers Four control buttons One MIDI out One serial RS-232 out You need to remember the main goal for this project is to find and use the cheapest components, but can still be maintain results at the professional standard. By using the PIC microcontroller, the whole design becomes easier to expand and it’s also assembly language friendly as well. Below is the list of eDrum special features: 24 unique velocity sensitive trigger inputs One Hi-Hat stereo input One Snare Dual-Piezo input Six Cymbal inputs with the choke Four Mono Piezo inputs Two modes HiHat pedal operation One MIDI output Four control buttons The RS232 serial port Assorted memory for snapshots Various controllable parameters Since this project is mainly about the Trigger to MIDI conversion matter, therefore the eDrum will not offer any… Continue reading

The Multiple Useful USB7

For those of electronic fans/lovers, you must very familiar with the LED display stuff. Well, today I would like to introduce you this USB7, which it can be used in multi electronic tasks. The USB7 is a six-digit LED display, and it is normally controlling by a USB virtual COM port. The USB virtual COM port (AVR-CDC) is an USB-RS232C interface that using CDC (Communication Device Class) protocol on USB 1.1. The biggest advantage of using CDC is its can works extremely well on low speed USB with slower speed (This mean with an ATtiny 45 enough to accelerate the 4800bps 8N1) and thus, we can save a lot of money as the ATtiny 45 is so far is the cheapest component for USB-232C interface type project. Some of the cool features for USB7: Simple ASCII code that enables it’s to controls all display functions The all through hole parts and pre-programmed microcontroller features The kits are provide in three colors, with standard 0.56″ common anode display format The PCB available in: Regular Version and With Mounting Holes Version. Grab… Continue reading