Kuzyatech has a new project posted, a Flex (FPC) 1mm cable passthrough breakout: By popular demand, the breakout/passthrough combination boards family now includes a 1mm pitch variant This version handles up to 30 signals which seems to be a practical limit of most 1mm FPC connectors. Each signal is numbered and brought to a 0.1mm spacing […]
Author Archives: DP
Clocked 8-bit random pattern generator for CMOS synth
Michael of Acidbourbon built a clocked 8-bit random pattern generator and wrote a post on his blog detailing its assembly: The idea behind this circuit is really simple: Build a white noise source Amplify the noise until it has CMOS/TTL logic level (0V=Lo, 5V=Hi) Use a clocked flip flop to sample the high frequency noise at a […]
DIY touch based nes controller
In this video Taylor of Electricreations demonstrates their DIY touch based nes controller.
STM32CubeMX GCC Makefile project
Baoshi writes: Writing peripheral initialization code is probably the most tedious work in embedded development. It always successfully stops me from starting a new project. I believe engineers at STMicroelectronics share the same pain. Therefore they created STM32Cube firmware and STM32CubeMX graphical configuration tool, which turns numerous key strokes and page flips into just a […]
App note: The effect of pan material in an induction cooker
A good read on induction cooker and the effects of pan material used, app note(PDF) from ON Semiconductors. Induction heating is a well established method of generating heat in metal goods and has been used for decades. The induction cooking market is well established, but little has been written regarding the properties and interactions of […]
Free PCB Sunday: Pick your PCB
We go through a lot of prototype PCBs, and end up with lots of extras that we’ll never use. Every Sunday we give away a few PCBs from one of our past or future projects, or a related prototype. Our PCBs are made through Seeed Studio’s Fusion board service. This week two random commenters will […]
App note: Using the DAC as a function generator
A function generator from an C8051 DAC application note(PDF) from Silicon Labs This document describes how to implement an interrupt driven multifunction generator on C8051 devices using the on-chip digital-to-analog converter (DAC). Four different waveforms expandable to any periodic function defined in a table. – Sine Wave (Table Defined) – Square Wave (Calculated) – Triangle […]
App note: Adding an ADC to the Raspberry Pi
Adding an ADC to the Raspberry Pi app note (PDF!) from FTDIChip: This application note will show how to connect the RPI-Hub-Module to the Raspberry Pi and install FTDI drivers to control the module. The application note will then explain how the module may be used to read values from an external ADC device over the SPI […]
App note: USB HID bootloader for PSoC 3 and PSoC 5LP
An application note on USB HID bootloader for PSoC 3 and PSoC 5LP from Cypress: AN73503 describes how to implement a USB bootloader for PSoC 3 and PSoC 5LP devices by using the USB Human Interface Device (HID) class. It also shows how to build a Windows-based USB host program. A PSoC Creator project and an […]
DirtyPCBs: C64FC 16K edition ready
Stian Søreng writes: A stack of release candidate 3 boards of the C64FC are on my desk, and a few changes have been made since RC2. We’re talking 16K support, software switches to select 8K/16K cartridge, cart disable support, bugs fixed and patched. I also want to give a good shoutout to DirtyPCBs for their […]
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 […]
Daft Punk Thomas helmet (RGB LEDs + iPhone App)
Marc made this cool DIY Daft Punk helmet and wrote a post on his blog detailing its assembly: It wasn’t until June of 2014 when I was browsing through Sparkfun’s New Product Post and I saw some LEDs that caught my eye. Now, I know the WS2811/2812 LEDs have been the craze for the past few […]
Mobile radio power controller ( MRPC )
Pete made a mobile radio power controller and wrote a post on his blog detailing its assembly: Before I began the installation of my Yaesu FT-8800 in my car I knew I wanted automatic power ON / OFF. This is a feature that I have always felt was lacking in my other mobile rigs as I am […]
Power playground project
Spacewrench over at Dorkbotpdx published a new build, a Power Playground project: It’s a PMOS/NMOS H-Bridge with FETs that can handle 3 amps or so, plus a SPI current sensor, some switches & a rotary encoder (not stuffed yet), and a 7-segment display, all controlled by a Teensy-3.1 running FreeRTOS. I made this because I’m always running into battery, […]
Android ping pong ball levitation
Jacob writes: This demonstration results in the levitation of a ping pong ball on a cushion of air. The purpose of the demonstration is to highlight the features of the PONTECH Quick240. Specifically and most excidingly the interface to an android tablet using the Android ADK. All of the source code controlling this application is […]
Fixing a Mega drive cartridge with old BIOS chips
Robson of Dragão sem Chama writes, “this time I want to share my Mega Drive flash cart made of old BIOS chips. I made it because my Sonic cart was not working since always. I used Arduino, Python and a bit of Processing (nice to show visual info) to program” Via the contact form. Check out the […]
DirtyPCB LSF0204 breakout board – a bidirectional, multi-voltage level converter
Francesco’s LSF0204 breakout board, a 4-bit, bidirectional, multi-voltage level converter: I needed a small, fast and reliable multi-voltage level translator (mainly for connecting ESP8266 boards to the Arduino, got tired of resistor networks pretty quickly) so I built a breakout board for TI’s LSF0204(D). Datasheet and info here. The LSF0204 is a nice little chip. […]
Arduino: 3 powerful, yet overlooked uses
Daniel over at Bench Talk /Mouser blog writes: Most engineers cringe when they see an Arduino in my toolbox. Their reaction is partly due to the fact that Arduino is often viewed as being too easy to use or just not feasible. For the most part, they are correct, but that’s not what I’m here to […]
Samsung Galaxy S-Pen waveform capture
Kerry Wong writes: I was quite intrigued by the S-Pen that came with my Samsung Galaxy Note 4. According to the specifications listed on Samsung’s site, the S-Pen supplied with Samsung Galaxy Note 4 he S-Pen supports 11 bits (2048 levels) of pressure levels and can be detected at a 15 mm hovering distance from […]
5″ capacitive touch panel with GSL1680 up’n running with Arduino
Helge of WeatherStation writes: After some help from wolfmanjm and CosR1, I managed to get a separate Buydisplay based GSL1680 touch panel up’n running on an Arduino Mega (1280) with only minor modifications to wolfmanjms code. The firmware is an integrated part of the sketch. Instead of using ram, it is put in the flash […]