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Modern Device USB BUB II solderpad

USB to TTL serial adapter

shop.moderndevice.com/products/bub_ii

Recent activity:

  • psd pushed6 years ago
  • psd pushed6 years ago
  • 9600 pushed6 years ago

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Description

A symmetrical board that fits perfectly with the JeeNode series of boards, made blue in colour, in honor of the Jee Internationale.

Features:

  • A polyfuse protects the USB line from short circuits and those alarming "USB line is overcurrent" messages.
  • Red and green LEDs show serial activity on both the TX and RX lines.
  • A shunt and jumper pads (your choice) choose power levels from 5 to 3.3 volts, or an outboard regulator voltage.
  • A shunt and jumper pads to switch logic levels from 5 to the FTDI's internal 3.3 volts or an outboard regulator voltage.
  • A capacitor on the DTR line to facilitate DIY Arduinos.

Schematic

Board

Bill of Materials

Designator Value Description
3V3_OUT SMD solder JUMPER
C1 10uF CAPACITOR, American symbol
C3 1uF CAPACITOR, American symbol
C4 0.1uF CAPACITOR, American symbol
C5 0.1uF CAPACITOR, American symbol
CN1 MINIB USB Connectors
F1 Bourns MF-PSMF035X-2 PTC fuses, resettable thermistors
FT232RL FT232RL Source: http://www.ftdichip.com/Documents/DataSheets/DS_FT232R_v104.pdf
FTDI Header 6
LGLV Header 3
R2 1K RESISTOR, American symbol
R3 1K RESISTOR, American symbol
R5 10k RESISTOR, American symbol
RX Green LED
SJ1 SMD solder JUMPER
SJ2 SMD solder JUMPER
SJ4 SMD solder JUMPER
SJ5 SMD solder JUMPER
TX Red LED
VOUT Header 3
VR MCP1703DB 250 mA, 16V, Low Quiescent Current LDO Regulator
VR_OUT SMD solder JUMPER

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This project is © Modern Device, and is published under the terms of the Creative Commons Attribution-ShareAlike 3.0 Unported licence.