Author Archives: DP

App note: MSP432 platform porting guide

Here’s a MSP432 platform porting guide from TI, app note here (PDF!): The goals for this porting guide is to help developers accurately assess the effort to port an existing application from one MSP platform to another, ultimately to derive a porting strategy with complete hardware and software coverage that properly ports the existing application without introducing bugs due to […]

Free PCB coupon via Facebook to 2 random commenters

Every Friday we give away some extra PCBs via Facebook. This post was announced on Facebook, and on Monday we’ll send coupon codes to two random commenters.  The coupon code usually go to Facebook ‘Other’ Messages Folder .  More PCBs via Twitter on Tuesday and the blog every Sunday. Don’t forget there’s free PCBs three times every […]

MozMo : the brilliant Arduino Mozzi synth in an Eurorack hardware

Jean-Luc Deladrière blogged about his MozMo build: Mozzi by Tim Barras is an outstanding library that allow the Arduino to produce complex and exiting sounds with almost no additional hardware. (In fact MozMo uses the hifi mode that requires … 2 resistors and a cap !) The idea was to build a dirty cheap modular synth exploiting […]

DirtyPCB BeagleQ

HouseOfBeck shared his DirtyPCB BeagleQ in the project log forum: The BeagleQ is a wifi enabled wireless intelligent bbq smoker controller based on the BeagleBone Black controller. This device is designed to control a fan connected to the smoker’s input vent/damper. Using a temperature probe placed in the pit the controller can read the pit temperature and […]

Low cost DC millivolt source

Dilshan Jayakody has published a new build, a DC millivolt source: DC millivolt sources are often used for thermocouple simulations, DMM, ADC and analog circuit calibrations and fault findings, etc. Most of the DC millivolt circuits are based on expensive (and sometimes hard to find) operation amplifier like OP7, LT1077, etc. In this article we introduce […]

Soldering Iron PID temperature controller

Mike has posted a detailed tutorial on how to modify an ordinary plugin soldering iron to work with a digital temperature controller: A thermocouple was mounted internally inside the soldering iron so it is out of the way. The idea was to find the “sweet spot” at the back of the heating unit inside the soldering iron […]

10×5 RGB LED Matrix with only 5 IO pins

Here’s an instructable on LED Matrix with custom code/software by Ole_L: This is the software which you need: -Arduino -Processing Flash the software to your Arduino and open the processing project with… Processing! Now you should change the line “String portName = “/dev/ttyACM~”;” to your Serial port, on WINDOWS “String portName = “COM~”;” Via the contact […]

App note: DC leakage failure mode in solid tantalum capacitor

An application note from Vishay on the causes of increased DC leakage current on solid chip tantalum capacitors. PDF link Here. This paper is submitted as an educational medium for use by anyone who has interest in solid tantalum chip capacitor performance.  It represents technical phenomena that are generic to all solid tantalum chip capacitors. […]

App note: Charge and discharge application of electrolytic capacitor

An application note from Rubycon about what causes electrolytic capacitors to deteriorate. PDF link is Here. Performance deterioration of aluminum electrolytic capacitor is accelerated by repeated charge and discharge. The speed of deterioration is determined by operating conditions. For example, the higher the voltage and smaller the discharge resistance, the tougher it is on the […]

App note: L6234 three phase motor driver

An app note (PDF!) from STMicroelectronics on L6234 three phase motor driver: The L6234 is a DMOSs triple half-bridge driver with input supply voltage up 52V and output current of 5A. It can be used in a very wide range of applications. It has been realized in Multipower BCD60II technology which allows the combination of isolated DMOS […]