Connectors

GM862 SMD Connector

DB9 Serial Connector

Barrel Power Jack

Mini-USB SMD connector

MicroSD/Transflash Socket

UEXT: universal expansion connector. The standard UEXT connector consists of ten pins (two rows of five, with 0.1" spacing) and supports I2C, SPI, and RS-232 serial communication, as well as carrying +3.3V power and common ground. -- Wikipedia: UEXT

JTAG connectors?

ideas#better data cable ideas

Some connector companies in no particular order: Samtec, Molex,

Rather than wiring a connector up directly to a CPU, one typically has some input protection between them.

The SFE Footprint Library includes a few connectors.

Mark Whitis has a list of "common pitfalls of Micro Development Boards". He describes how the 26 pin connectors on his Mark Whitis Microcontroller Development Board avoid those pitfalls and have many non-obvious features that make them superior to many other connectors.

Massmind: "Maximum interconnect options from minimum board space" discusses a board pattern that gives you the option of plugging in any one of a variety of different connectors.

Connectors and data cable ideas are further discussed at Ideas#better_data_cable_ideas.

Power-only USB connectors and cables

• Adafruit. "USB C SMT / THM Jack Connector - Power Only".

• Simon Lewis. "Make a USB Cable 'power Only'".
• Charlie Sorrel. "How (and why) to make your own power-only USB cable".
• "I want to make a USB C charge only cable".

• Jeff Smoot. "An Introduction to Power-Only USB Type C Connectors".
  • Jeff Smoot. "An Overview of USB Type-C in Power-Only Designs".
  • Reddit "USB Type-C devices & hardware" : comments on "An Introduction to Power-Only USB Type C Connectors"

• "How can I tell charge-only USB cables from USB data cables?".
• "Using USB-C as a power source".
• "What is the max USB cable type-A male to type-c male Volt/current/Wattage possible?".
• "USB Type C Power Delivery ... max length?": "Is there a maximum length for a charging only cable?"

USB-C breakout boards

• SparkFun. "USB-C Breakout": "breaks out the USB-C connector's VBUS, GND, CC1, CC2, D+, and D- pins intro a 0.1" pitch header"
• SparkFun. "SparkFun Serial Basic Breakout - CH340C and USB-C": "USB-to-Serial adapter ... The pinout of the Serial Basic mimics the common DTR/RXI/TXO/VCC/CTS/GND pinout ..."
• Adafruit. "Simple USB C Socket Breakout": "it doesn't break out all the pads - it just gives you the classic 4 USB pins" Vbus, D-, D+, GND.
• Adafruit. "Adafruit USB Type C Breakout Board" and "USB C Breakout Board".
• Adafruit. "USB Type C Socket - SMT Inline Breakout Board". with nearly all of the 24 pins broken out.
• Pololu. "USB 2.0 Type-C Connector Breakout Board": "The USB-C connector’s 24 tightly-spaced pins make it difficult to use in a hobby project or prototype design. This breakout board helps by providing access to the connector’s pins for power (VBUS and GND), USB 2.0 differential data (D+ and D−), Configuration Channel (CC), and Sideband Use (SBU)."
• Pololu. "USB 2.0 Type-C Connector Breakout Board".
• PMD Way. "USB 3.1 Type C Male to Female Breakout Test Board".
• Tinkersphere. "Male USB C Breakout Board" and "Female USB C Breakout Board".
• Newegg. "USB-C Male Plug Connector [Breakout Board"].

Magnetic connectors

• Adafruit. "Magnetic USB Type-C Plug Tip" and the matching "USB A or Type-C to Type-C Cable with Magnetic Tip - 1 meter long".

• "USB Type-C Alternative with fewer signal wires".

Further reading

• SFUPTOWNMAKER, SparkFun member #23999 "Connector Basics".