Ken Boak blogged about his ChipStick PCB build:
The ChipStick design has the following features:
- MSP430FR2433 with 15.5K FRAM and 4K SRAM
- External SRAM or FRAM device connected via SPI on USCI B0
- CH340G USB to serial converter IC on detachable section of board
- 3V3 voltage regulator
- Reset Switch and User LED
- 20 Pin DIL footprint to allow insertion into G2 Launchpad socket
- Programmable by SBW or BSL
Project info at Sustainable Suburbia blog.