1 / 6

Zipit Bluetooth Serial mod. Steve Adolph

Zipit Bluetooth Serial mod. Steve Adolph. Goal: Enable portable internet connectivity for a Tandy 200 using a Zipit Z2 Tandy200 RS-232 bluetooth  Zipit Z2  internet Approach: Add internal bluetooth serial adapter to the Zipit Z2 Use RN-42 from Sparkfun: enables serial over bluetooth

zanthe
Télécharger la présentation

Zipit Bluetooth Serial mod. Steve Adolph

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Zipit Bluetooth Serial mod.Steve Adolph Goal: Enable portable internet connectivity for a Tandy 200 using a Zipit Z2 Tandy200 RS-232 bluetooth  Zipit Z2  internet Approach: Add internal bluetooth serial adapter to the Zipit Z2 • Use RN-42 from Sparkfun: enables serial over bluetooth • Tandy 200 has a matching bluetooth adapter • Minimal impact on look/feel of Zipit

  2. Internal Connections RN-42: RS-232 + flow control • TxD, RxD, RTS, CTS, +3.3V, GND Zipit Z2: ttyS1 is assigned to the “BT” serial port • 3 signals on edge connector, 1 on PCB (backside of Z2 LCD screen) top _________________________________________ | 36-pin connector . | ---------|_________________________________________|------- DC [O] |||||||||||||||||| |||||||||||||||||| bottom 36 19 18 1 (ext. +5VDC) Connector Pin # Connected To Function Use ------------------------------------------------------------------ 31 CPU C17 GPIO (45) BTRTS 36 CPU A20 GPIO (44) BTCTS 7 CPU D20 GPIO (42) BTRXD - CPU B21 GPIO (43) BTTXD (connect at smd pad on board)

  3. Serial port connections CTS RTS RxD TxD

  4. Wired up 3.3V

  5. RN-42 placement

  6. Comments • RN-42 fits snugly in the lcd cover, and there is no height problem. • I notched the foam to make room for RN-42, ad the wires. • Soldering was very tricky. I used a microscope and a third hand vice. • Adding LEDs for status would be a possible also.

More Related