Tag Archives: USB

USB to RS485 converter

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Marko Pavlin has published a USB to RS485 converter. He writes:

Testing of sensors with RS485 using PC without proper interface is not possible. Since RS232 interfaces are very rare, the interface should be hooked to USB. The interface between USB and RS485 can be soldered with one of the many FTDI interfaces with added RS485 driver, or bought as assembled module. There is always the third option. I made it from scratch.

USB to RS485 converter – [Link]

Using USB Type-C on hobbyist projects

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Tyler has build a breakout board for Type-C USB plug and explains how this can be used in various DIY projects.

The new Type-C USB connector is the latest addition to the USB connector standards. It offers reversible plugs, direction independent cables, USB3.1 speeds, and 3A charging in a connector only a little bigger than the USB 2.0 MicroB connector. In order to add these capabilities the plugs and connectors have additional configuration pins to allow devices to negotiate their state. Supporting the configuration channel may seem like a difficult challenge but it can be achieved fairly simply for the basic use cases.

Using USB Type-C on hobbyist projects – [Link]

USBuddy: USB development tool

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Jakub has designed and built a USB breakout board with current monitor – USBuddy:

Do you sometimes develop with USB? I do. So I need to access data lines, bus voltage and I’d like to easily monitor the current too. I made myself a small companion (43.5 mm × 22.5 mm, 9.5 g) to do that. Just a simple breakout board with one connector in and one out. And a little extra to make things easier. I call it USBuddy.

USBuddy: USB development tool – [Link]

Memtype: Open Source Password Keeper

USB-password

Memtype is an elegant solution to have your credentials stored everywhere. By Miguel:

Memtype project is a low-cost and open source solution to store your passwords for having them available everywhere in a tiny and portable USB form factor device.

The device is based on the Atmel attiny85 device and uses V-USB software solution to have USB communications and enumerate as a keyboard.

Memtype: Open Source Password Keeper – [Link]

USB to UART Converter with GPIO – MCP220

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The Module is based on The MCP2200, which is a USB-to-UART serial converter which enables USB connectivity in application that have a UART interface. The device reduces external components by integrating the USB termination resistors. The MCP2200 also has 256-bytes of integrated user EEPROM. The MCP2200 has eight general purpose input / output pins. Four of the pins have alternate functions to indicate USB and communication status.

Specifications 

  • Supply 3- 5V DC
  • On Board TX & RX LED
  • USB activity LED outputs (TxLED and RxLED)
  • Mini USB Interface
  • 6 + 6 PIN Header Connector for I/O and RX-TX Signals
  • UART signal polarity option General Purpose Input/output (GPIO) Pins
  • Eight (8) general purpose I/O pins
  • Supports Full-Speed USB (12 Mb/s)

USB to UART Converter with GPIO – MCP220 – [Link]

USB curve tracer for NPN transistors

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Dilshan Jayakody documented his USB port base NPN transistor curve tracer project:

Curve tracer is an electronic test instrument to analyze the characteristics of transistors and other discrete semiconductors. In this post we construct USB base curve tracer to analyze properties of NPN transistors. This curve tracer is build around Microchip’s PIC18F4550 MCU and it use simple Windows based GUI application to plot captured data of a transistor.

USB curve tracer for NPN transistors – [Link]

USB Power Meter

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Daniel Grießhaber @ hackaday.io has published his build of a USB power meter. His device is based on ATTiny 85 mcu and 0.96″ OLED Display and is able to measure voltage, current and power output from USB port.

Since USB has become more and more a power delivery standard, it would be nice to have a convenient way to measure the power consumption these devices need. Of course there are already power meters out there, but they are just boring or don’t have all the features I like.

USB Power Meter – [Link]

SolarBoost – Make Your Own USB Solar Mobile Charger

solar_charger

SolarBoost is an open source smart interface that allows you to build your own powerful and portable solar charger for your phone and other mobile devices. It has two USB ports and can provide 5V @ 2A at each of them and is controlled by a 8-bit 32MHz Microchip PIC microcontroller. It is also equipped with various protection features like soft-start, over-temperature, over-charge, over-discharge, short-circuit and current limiter.

SolarBoost is the first open-hardware and open-source smart interface designed to give you the freedom and flexibility to make your own battery- and solar-powered power bank for charging cellphones, tablets, MP3 players, speakers, GPS navigators, and much more. Use it to also power your DIY electronics projects!

SolarBoost – Make Your Own USB Solar Mobile Charger – [Link]

DIL-Duino – Arduino in a DIL shape

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DIL-Duino is a complete Arduino environment in a DIL-8 form factor based on the DigiSpark Hardware. by Daniel Grießhaber:

DIL-Duino uses the QFN Version of the ATTiny85 and a USB Bootloader to provide the easy to use Arduino stack in a single DIL-8 Package Footprint.
To fit the Micro-USB socket on the board, it was necessary to make the actual board bigger than the DIL Package, but after development the Board is perforated to break the USB Socket and get the desired footprint.

DIL-Duino – Arduino in a DIL shape – [Link]