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.