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MiniDuino X2

Page history last edited by MrTundraMan 11 years, 7 months ago

MiniDuino Version X2

MiniDuino Version V1

The MiniDuino is an Arduino(TM) variant targeted at a very specific application - an Embedded GPS controller. The functionality of the MiniDuino allows it to be used in many applications. MiniDuino is very small - 2.0" x 1.35" and has large 4-40 mounting holes on each of the four corners for easy installation into an enclosure.

Here's my Arduino library for the MiniDuino.

An application-oriented Arduino variant

The MiniDuino is targetted at supporting some leading hardware choices. The following have connections directly on the MiniDuino:

Adafruit Ultimate GPS Breakout 8-pin connector
Chinese 1.8" TFT LCD with MicroSD Card (10 pin variant with wiring to support 8 pin wiring version) (Adafruit version).
FTDI-USB-TTL 6-pin connector
5-Way Switch interface (GVS)
5 Analog connections with AREF

A4, A5 split onto separate I2C connector

3 Digital connections with Power/Ground

An Embedded Design Arduino

The result is the a great basis for most embedded designs. Any design which requires menu navigation and LCD displays along with a few I/O pins is a great fit. More I/O pins can be accommodated via an I2C interface and either the 8-bit I2C parallel port card or 16-bit I2C parallel port card.

Parametrics

Power draw 20 mA

Connectors/Pinouts

Pin 1s are the square pins.

TB1 - 5mm Terminal block

1 - VIN (7-12V)
2 - GND

J1 - TFT LCD

VCC
BKLT (WIRED TO GROUND)
RESET
D/C-RES
MISO
MOSI
SCL
LCDCS
SDCS
GND

J2 - 5-Way Switch Menu (Analog 0)

Ground
VCC
Switch Input

J3 - GPS Connector (Digital 2/3)

VCC
GND
GPSRX
GPSTX
GPSFIX (N/C)
VBAT (N/C)
GPSEN (N/C)
3.3V OUT

J4 - FTDI (Digital 0/1)

GND
GND
VCC
D0
D1
RESET

J5 - Analog Spares (AD1-AD3)

AREF
GND
GND
AD1
AD2
AD3

J6 - Digital Spares (D4-D6)

J7 - I2C Interface (AD4/AD5)

J8 - Card Power Selection Jumper (FTDI or TB1)

1-2 FTDI

2-3 TB1

Material costs

ref	value	Cost
C1	0.1uF	0.15
C2	0.1uF	0.15
C3	0.1uF	0.15
C4	CP	0.5
C5	0.1uF	0.15
D1	1N4004	0.3
J1	CONN_10	0.25
J2	CONN_3	0.15
J3	CONN_8	0.25
J4	CONN_6	0.25
J5	CONN_6	0.25
J6	CONN_6	0.25
J7	CONN_4	0.25
J8	CONN_3	0.25
MTG1	CONN_1	0
MTG2	CONN_1	0
MTG3	CONN_1	0
MTG4	CONN_1	0
R1	10K	0.1
TB1	TB-2PIN	0.5
U1	ATMEGA328-PU	3
U2	AP1117	0.5
Y1	16MHz	0.5
pcb		4.58
	Total	12.48

// Pin assignments as referenced to the Zachary ProtoShield
// Arduino Port  Connector  Function
// D0            J4-4       FTDI Transmit/Arduino Receive
// D1            J4-5       FTDI Receive/Arduino Transmit
// D2            J3-3       GPSRx
// D3            J3-4       GPSTx
// D4            J6-2       Digital Input
// D5            J6-3       Digital Input
// D6            J6-4       Digital Input
// D7            J1-9       SD Card Chip Select
// D8            J1-3       LCD Reset
// D9            J1-4       LCD Register Select (DC or RS)
// D10           J1-8       LCD Chip Select
// D11           J1-6       LCD MOSI 
// D12           J1-5       LCD MISO
// D13           J1-7       LCD SCK
// A0            J2-3       Keypad
// A1            J5-4       Values (such as temperature) set potentiometer wiper
// A2            J5-5       Analog Input
// A3            J5-6       Analog Input
// A4 (SDA)      J7-3       I2C SDA LCD
// A5 (SCK)      J7-4       I2C SCK LCD