Pues parece que natrium ya a empezado a hacer la preventa de su cartucho de slot1 con el que permite conectar la DS a diversos conectores como el USB o el puerto serie
Descripcion sacada de la pagina de natrium:
This is a pre-order for DSerial2. It is a card that provides USB client, serial and GPIO ports as well as a 2D tilt sensor. It enables you to interface NDS to MIDI keyboards, servos, sensors, GPS receivers, computers and more.
Documentation and sample projects are available at NaWiki.
Forum is available here.
Features
* 8051 microcontroller running at 24MHz
* Reprogrammable from DS, firmwares available at NaWiki
* Free development tools available
* 18 GPIO lines, 2 status LEDs
* UART with RS-232 level converter (can be disabled)
* Full-speed USB 2.0 device
* PWM and ADC available
* 2D tilt sensor
* Backwards compatible to DSerial1
Link de la pagina:
www.natrium42.com