Here’s a fairly old app note on Fairchild’s take of voltage translation ICs. The Fairchild CMOS Translating Transceivers: 74LVX3245, 74LVX4245, 74LVXC3245, and 74LVXC4245 are true voltage translating devices. This is accomplished by electrically isolating the A-side from the B-side. The LVX Translating Transceivers are divided into two types of devices, Dual Supply Translating Transceivers, and […]
Author Archives: DP
App note: In-system calibration with the 78M6610+PSU energy measurement processor
Another application from Maxim on how to calibrate a measurement subsystem using the 78M6610+PSU: The 78M6610+PSU is an energy measurement processor that is embedded in high-power switch-mode power-supply units (PSUs) to measure and report the real-time power used by the system. As with any measurement device, the sense circuit used with the 78M6610+PSU must be […]
App note: Thermal Management Handbook
A Thermal Management handbook from Maxim, , app note here: Maxim’s Thermal Management Handbook includes temperature sensing and fan control concepts, circuits and application guidelines. Thermistors, thermocouples, RTDs, and various IC temperature sensors (local temperature sensors, remote temperature sensors, analog temperature sensors, digital temperature sensors, and temperature switches) are discussed, as well as various approaches […]
Hantek PPS 2320A review
Alan Parekh of Hacked Gadgets writes: Thanks to Circuit Specialists for sending in this 3 chanel power supply. The Hantek PPS 2320A sure packs in a ton of features for the price. The video below goes through the unboxing of the power supply and a quick run through its features. Overall it functions quite well, […]
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. More PCBs via Twitter on Tuesday and the blog every Sunday. Don’t forget there’s free PCBs three times every week: Free PCB Sunday. The classic. Every week, get […]
The Final key – Hacking challenge
A followup to the final key – Hardware password manager post, DusteD wants to giveaway a Final key to the first person who can document a method to extract passwords from the key: I would like to point to the Final key main page describing the usage and some of the security aspects of the device, and also […]
Week in (p)review May 09, 2014
Here’s a summary of major developments over the last week. Free PCB Friday is coming up soon. NEW PROTOTYPE: Premium Make Your Own Cable Kit Hacker Camp Shenzhen Day 3: Office hunting, hiring, starting companies, work visas Sick Of Beige basic case v1 (DP6037) and Bus Blaster v4 are back in stock at Seeed Studio Cable […]
PIC-based dumb terminal
Charles Douvier writes: Okay before you start; I know.. I know.. Because I’m shooting for a VT-100-ish emulation my project is technically an “intelligent” terminal but not in a sense that it runs an embedded OS/IP-based, but in the sense that it decodes ANSI ESC codes.. it’s still a freakn’ dumb terminal in my book. […]
USB isolator project
Scasagrande shared his USB isolator project, that is available at Github: I received inspiration for the project from other USB isolator projects on the internet. Mine features a few improvements to many of them: USB-B and micro-USB connectors on the host (upstream) side In addition to accepting power via the barrel connector (which goes through […]
Hacker Camp Shenzhen Day 3: Office hunting, hiring, starting companies, work visas
By ian Ian @ Dangerous Prototypes discusses office hunting and life in Shenzhen. Jin @ FlyLin shares his experience hiring short term labor for kitting and assembly. Chester details the types of companies foreigners can start in China, and how to get a work visa. Morning discussions from Hacker Camp Shenzhen 2014, Saturday April 5th. […]
Taco Crawl 2014 Thursday before Maker Faire
Every year before Maker Faire we spend a day in San Francisco to visit the Noisebridge hackerspace, Instructables, and other open hardware/DIY/hacker friendly people. Noisebridge is located in a neighborhood called the Mission District, and it has dozens of delicious Mexican taco shops called taquerias. We try to eat a carne asada taco at every […]
GIVEAWAY: Premium Make Your Own Cable Sample Pack
Today the Premium Make Your Own Cable Kit is available at Seeed Studio. During development we ended up with tons of connectors, so we kitted them up into a sample pack. 200 cable kit sample packs are now available in the free PCB store. If you’d like to get one now but don’t have a coupon, […]
NEW PROTOTYPE: Premium Make Your Own Cable Kit
How often have you been caught without the right cables? You can salvage an old ugly one from somewhere, or make a last minute part order that delays your project. Never again! The Premium Make Your Own Cable Kit from Dangerous Prototypes contains enough connectors to make an (almost) lifetime supply of cables for standard […]
Voltage recorder with playback
Dick Cappels wrote an article detailing his AVR data logger and voltage recorder: The recorder includes the functionality of a data logger but also plays back recorded voltages and can perform a curve trace function.A simple file system provides for up to 128 different sequential files totaling up to 130,000 samples. At 1 sample per […]
Sick of Beige basic case v1 (DP6037) back in stock
Sick Of Beige basic case v1 (DP6037) is back in stock at Seeed Studio. A clear laser-cut acrylic project case kit that fits DP6037 PCBs (60mmx37mm). Sick of Beige v1 DP6037 project case is available at Seeed for $3.
FPGA based PlayStation portable display driver
Kalle Hyvönen has designed a FPGA-based display driver for driving PlayStation Portable displays: This is a project I made quite a while back (about 7 months ago). I wanted a bigger display for a project of mine and noticed that PlayStation Portable displays (480×272 pixels) are quite cheap on eBay but they do not have […]
Zero-wire serial auto-reset for Arduino
A followup to the Modify an off-the-shelf CP2102 module as an Arduino programmer post, Ralph Doncaster writes: Instead of modifying the USB-TTL adapters, I modified the AVR board and the avrdude software to reset the AVR with a break signal. This way just Rx, Tx, Gnd and Vcc are needed.
chipKIT Project 5: Digital stopwatch on seven segment LED display
Raj of Embedded Lab has a series of chipKIT tutorials. This 5th project will show you how to build a digital stopwatch on seven segment LED display with the chipKIT Uno32: In this project, we will use the chipKIT Uno32 board to build a digital stopwatch capable of timing minutes, seconds, and 1/10th of seconds, and with a […]
TERMES – Termite-inspired robots
Researchers at Harvard University’s Wyss Institute for Biologically Inspired Engineering built this termite-inspired robots that build unsupervised: Inspired by termites and their building activities, the TERMES project is working toward developing a swarm construction system in which robots cooperate to build 3D structures much larger than themselves. The current system consists of simple but autonomous mobile […]
#FreePCB via Twitter to 2 random RTs
Every Tuesday we give away two coupons for the free PCB drawer via Twitter. This post was announced on Twitter, and in 24 hours we’ll send coupon codes to two random retweeters. Don’t forget there’s free PCBs three times a every week: Hate Twitter and Facebook? Free PCB Sunday is the classic PCB giveaway. Catch […]