Here’s an application note from Atmel: USB High speed device mass storage on SD/MMC card with optional AES (PDF!) This application note is a description of a USB Mass Storage device, using High Speed USB for communication and a SD/MMC-card … Read more
USB OTG like connector implementation (PDF!): The USB OTG (On-The-Go) is an interface to communicate with portable USB devices. In the SAM9x5 Series (SAM9G15/G25/G35/X25/X35) and SAMA5D3x products, the USB host and device share one transceiver. The shared USB transceiver can … Read more
RFduino: A finger-tip sized, Arduino compatible, wireless enabled microcontroller, low cost enough to leave in all of your projects! The RFduino runs Arduino code and can do everything an Arduino can, plus much more. Using the RFduino USB shield, simply … Read more
Hlipka has written an article about his auto-power-off project: I have an external hard drive connected to our satellite receiver for quite some time (to have it work as a PVR). But for some reason the disk won’t power down … Read more
After two DIY Li Ion chargers this week (first, second), here is a lithium iron phosphate (LIFePO4) battery charger. These batteries are a safer cousin to the standard Li-Ion batteries, but sacrifice some of it’s energy density for the safety. … Read more
The December 2012 issue of the Australian electronics magazine Silicon Chip features the USB Power Monitor. It uses a PIC18F45K80 to monitor the power consumption of a USB device. The board acts as a bridge between the host and the … Read more
Bored of always typing in the same password over and over again? Luca designed a board to tackle just that problem. It’s a USB composite device, featuring both a USB keyboard emulator and a serial port. You program the letter … Read more
Madox wrote a tutorial on how to setup the cheap TL-WR703N WiFi router to act as a wireless USB port for your Windows computer. This means that any USB device you attach to the router will be recognized by your … Read more
A few weeks ago we posted that the FT311D Android Open Accessory (AOA) ICs didn’t support AOA 2.0 devices. This has been rectified in the latest silicon revision (rev C.). The device required a change to enable connection to the … Read more
M-atthias was successful in running bitbang USB v1.1 on a MSP430G2452. It’s similar to the V-USB project that’s used on AVRs. It takes ~2kb of room on the microcontroller. Yes, this is similar to the efforts of V-USB for AVR, … Read more
Tuomas designed a simple function generator controlled via USB. It’s capable of generating sine, square, and triangle waveforms up 3 MHz. The device uses the AD9833 SPI programmable waveform generator IC and a USB-enabled AVR to control it. One tool … Read more
Here is TitanMKD’s USB current, and voltage tester designed on the DP5031 standard PCB. The board features 4 standard USB connectors, while voltage and current can be measured via 4mm banana terminals For those interested in a cheap funny board … Read more
Bluebie is developing µBoot, a tiny USB bootloader that only consumes 2.1 Kilobytes of flash on an ATtiny85. It’s based on USBaspLoader-tiny85 bootloader but loses ~0.7KB by customizing it’s functionality. µBoot is a tiny bootloader for attiny85 chips. Weighing in … Read more
As a follow up to yesterday’s post, Matseng released the design files for his DimBlue 16 channel USB or Bluetooth controlled light dimmer. The design files and firmware are available on GitHub. Via the forum.
Matseng designed DimBlue, an ATmega32u4 based USB controllable 16 channel light dimmer. Triacs which dim the lights are optoisolated from mains to provide protection from high voltages. The board is powered from mains voltage, via a PCB mounted transformer. As … Read more
Dolabra is designing Donatello, a Part Ninja and Superprobe combo. Instead of having a display on the board, like the Superprobe and Part Ninja, he delegated the display to a host computer over USB. My intention is to make a … Read more
Like so many others, we found a nice 1.8″ TFT display in China, and we decided to make a breakout for it. Instead of just breaking out the pins, and perhaps adding the micro SD card holder, we equipped our … Read more
Today’s 3D model is a 1.8” TFT Backpack board we’ve been playing with lately in the workshop. It’s a cheap 1.8” serial TFT we got of of eBay. The picture was rendered using Kerkythea, sorry about the light-umbrella reflection on … Read more
Cmdrk33n hacked the avr-cdc library to add the RS232 DTR signal output to one of the pins on his ATtiny MCU. Only a few lines of code need to be changed to implement his solution. Demonstrated in the above video … Read more
Today we added 2pin, and 3pin 5mm pitch wire-to-board terminal connectors, and a SMD USB type A female connectors to our Eagle library. Pictured above is the 2pin terminal connector.
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