A teensy-sized breakout board for QFP-48 STM32 MCUs (rev3). Originally designed for STM32L052CxTx, but should work with any pinout-compatible MCUs (most of LQFP-48 packaged STM32s should work, but check the datasheet! Tried with STM32L052C8T6, STM32F072CBT6, STM32F103C8T6).

Intended for low-power applications (e.g. sensors).

Features:

• hand-solderable (0603, SOT-563 regulator, LQFP-48 (0.5mm pitch) MCU)
• power options (USB <-> solder jumper <-> VIN <-> regulator <-> solder jumper <-> VDD net) - so it is possible to bypass the voltage regulator entirely; or add a LIPO-charger external module.
• analogue supply optionally routed through a ferrite bead, and a footprint for an extra stabilising capacitor
• 1 LED, reset button, user button (routed to BOOT0 and PA1) {hence the user button can be used to enter the built-in bootloader}
• a footprint for adding an external high-frequency crystal (required for STM32L1* for USB)

More docs

A small breakout board for Freescale KL27Z chips that come in LQFP64 package. Just USB (mini or micro), reset button, NMI button, one LED and minimal passive components.

WARNING: This breakout is for MKL27Z128VLH4 and MKL27Z256VLH4 chips. Do not use MKL27Z32VLH4 or MKL27Z64VLH4 chips on it - these do not have the internal voltage regulator, so you would fry the chips on this breakout (Freescale got silly with chip naming once more.)

Level translator for 2x3 AVR ISP.

Based on GTL2003 chip; jumper to select voltage between 3V3 onboard regulator, ISP voltage, or target board (powered independently); breakout pads for a breadboard.

Designed to be flat (headers mounted on the sides).

SMT version of Little Wire (optional 3V3 regulator and 3V3 operation, optional microUSB or miniUSB connector).

LEDs on power and PB1.

Similar to USBASP-t.