Difference between revisions of "Twog v1"

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''' !! WARNING !!'''<br>
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'''THIS IS A PRELIMINARY DESIGN, IT HAS NOT BEEN TESTED YET.'''<br>
'''DO NOT USE FOR MASS PRODUCTION AS LONG AS THIS MESSAGE REMAIN.'''
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[[Image:Twog_v1-00_3D_top.jpg|400px|Twog v1.00 3D top view]]
[[Image:Twog_v1-00_3D_top.jpg|400px|Twog v1.00 3D top view]]
[[Image:Twog_v1-00_3D_bottom.jpg|400px|Twog v1.00 3D bottom view]]
[[Image:Twog_v1-00_3D_bottom.jpg|400px|Twog v1.00 3D bottom view]]

Revision as of 22:54, 10 June 2008

Twog v1.00 3D top view Twog v1.00 3D bottom view

Hardware Revision History

Version # Release Date Release Notes
v1.00 04/2008 Initial release of Twog v1

Features

  • Single LPC2148 MCU
  • 8 x Analog input channels 0V - 3.3V (2 channels with optional on-board resistor bridge)
  • 1 x 3.3V TTL UART (5V tolerant)
  • 8 x PWM outputs
  • 1 x R/C receiver PPM frame input
  • 1 x SPI bus
  • 1 x I2C bus
  • 1 x USB (client)
  • 5V/2.5A switching power supply & 3.3V/1A linear regulator
  • 3 x status LEDs with attached test point
  • 8 grams (0.28 oz)
  • 40.2 x 30.5mm (1.6" x 1.2")
  • 2 layers PCB design, 0603 components

  • Top side

  • Bottom side

  • Top side

  • Bottom side

Architecture

Twog v1 architecture.png

Pinout

Pins Name and Type are specified with respect to the Autopilot Board

Twog v1-00 pinout.png


SERIAL
Pin # Name Type Description Suggested Color
1 GND PWR common ground Black
2 +5V PWR 5V Rail from Tiny Orange
3 +3.3V PWR 3.3V Rail from Tiny Red
4 DTR
5 CTS
6 RTS
7 RXD1 IN UART1 Serial Input (3.3V level, 5V Tolerant) Green
8 TXD1 OUT UART1 Serial Output (3.3V level) Blue


SPI
Pin # Name Type Description Suggested Color
1 GND PWR common ground Black
2 +3.3V PWR 3.3V Rail from Tiny Red
3 SSEL IN SSP Slave Select. Selects the SSP interface as a slave (SSEL1) Brown
4 MOSI I/O SPI1 Master Out Slave In. Data output from master or data input to slave Grey
5 MISO I/O SPI1 Master In Slave Out. Data input to master or data output from slave Green
6 DRDY IN External interrupt 0 input (EINT0) Purple
7 SCK I/O SPI0 Serial clock. Clock output from master or input to slave Yellow


PPM
Pin # Name Type Description Suggested Color
1 GND PWR common ground Black
2 +5v PWR 5V Rail from Tiny to R/C receiver supply Orange
3 PPM_IN IN PPM Stream from R/C Receiver (5V tolerant) White
4 SERV_RST OUT external PPM decoder reset (Note 1)
5 SERV_CLK OUT external PPM decoder clock (Note 1)

Note 1 : Used only if servos are connected to the R/C receiver


USB
Pin # Name Type Description Suggested Color
1 GND PWR common ground Black
2 +3.3V PWR 3.3V Rail from Tiny Red
3 USB+ I/O USB bidirectional D+ line Green
4 USB- I/O USB bidirectional D- line White
5 VBUS IN Indicates the presence of USB bus power (P0.23) (5V level) Orange
6 BUTTON IN External Button (+3.3v pullup)
7 LED3 OUT GPIO (LED #3 command)
8 ADC_7 IN Analog to Digital Converter Input #7


IRV
Pin # Name Type Description Suggested Color
1 GND PWR common ground Black
2 +3.3V PWR 3.3V Rail from Tiny Red
3 IRV IN Vertical IR Sensor signal (Analog to Digital Converter Input #0) Purple


IRH
Pin # Name Type Description Suggested Color
1 GND PWR common ground Black
2 +3.3V PWR 3.3V Rail from Tiny Red
3 IRH_2 IN Horizontal IR Sensor signal axis 2 (Analog to Digital Converter Input #2) Grey
4 IRH_1 IN Horizontal IR Sensor signal axis 1 (Analog to Digital Converter Input #1) Brown


ADC1
Pin # Name Type Description Suggested Color
1 GND PWR common ground Black
2 +5v PWR 5V Rail from Tiny Orange
3 +3.3V PWR 3.3V Rail from Tiny Red
4 ADC_4 IN Analog to Digital Converter Input #4
5 ADC_3 IN Analog to Digital Converter Input #3


ADC2
Pin # Name Type Description Suggested Color
1 GND PWR common ground Black
2 +5v PWR 5V Rail from Tiny Orange
3 +3.3V PWR 3.3V Rail from Tiny Red
4 ADC_6 IN Analog to Digital Converter Input #6 (Maximum input level can be selected with R12 value)
5 ADC_5 IN Analog to Digital Converter Input #5 (Maximum input level can be selected with R13 value)


DOWNLOAD/GPS
Pin # Name Type Description Suggested Color
1 GND PWR common ground Black
2 +5v PWR 5V Rail from Tiny Orange
3 +3.3V PWR 3.3V Rail from Tiny Red
4 BOOT IN In-Circuit Serial Programming (ISP) enable (P0.14, +3.3v pullup) (Note 2)
5 GPS_RESET IN leave unconnected, hold this pin low only for bootloader programming
6 TXD0 OUT UART0 Serial Output (usable with an external GPS receiver) Blue
7 RXD0 IN UART0 Serial Input (usable with an external GPS receiver) Green

Note 2 : Holding this pin low for at least 3mS after a RESET (or power up) instructs the controller to enter programming mode.


I2C
Pin # Name Type Description Suggested Color
1 GND PWR common ground Black
2 +5V PWR 5V Rail from Tiny Orange
3 +3.3V PWR 3.3V Rail from Tiny Red
4 SDA I/O I2C bus Serial DAta
5 SCL I/O I2C bus Serial CLock


CAM
Pin # Name Type Description Suggested Color
1 GND PWR common ground Black
2 +5V PWR 5V Rail from Tiny Orange
3 +3.3V PWR 3.3V Rail from Tiny Red
4 CAM_SW OUT video source/payload selection signal
5 SRV_1 OUT Servo PWM signal #1
6 SRV_5 OUT Servo PWM signal #5
7 AUX PWR video/payload switchable 5V power suply

Schematic

Twog v1.00 Schematic


PCB

  • PCB top side view (Olimex)

  • PCB top copper

  • PCB bottom side view (Olimex)

  • PCB bottom copper

Gerber & Drill Files

Download Twog v1.00 gerber & drill files (zip)

RS274X, units = Inches, format = 2:5

  • Twog_v1-00.GTO (Top Component Print Layer)
  • Twog_v1-00.GTS (Top Solder Mask)
  • Twog_v1-00.GTL (Top Copper Layer)
  • Twog_v1-00.GBL (Bottom Copper Layer)
  • Twog_v1-00.GBS (Bottom Solder Mask)
  • Twog_v1-00.DRI (NC XY coordinates & Drill tools sizes)

Possible PCB Manufacturers

Assembly

Components Layout

  • Top components Layout

  • Bottom components Layout

  • Top components details

  • Bottom components details

Bill Of Material

Download Twog v1.00 Bill Of Material (zipped .xls file)


Qty Manufacturer part # Schematic part name / value Designator Description Manufacturer Package Optional Digikey.com Other distributor
Resistors
2 ERJ-3EKF33R0V 33 R21, R22 1/16W, 5% Panasonic 0603 P33HCT-ND
1 ERJ-3EKF1000V 100 R24 1/16W, 5% Panasonic 0603 P100HCT-ND
1 ERJ-3EKF3300V 330 R4 1/16W, 5% Panasonic 0603 P330HCT-ND
3 ERJ-3EKF1001V 1K R16, R17, R23 1/16W, 5% Panasonic 0603 P1.00KHCT-ND
3 ERJ-3EKF1501V 1.5K R2, R19, R20 1/16W, 5% Panasoni 0603 P1.50KHCT-ND
2 ERJ-3EKF1801V 1.8k (see note1) R13,R18 1/16W, 5% Panasonic 0603 P1.8KHCT-ND
3 ERJ-3EKF3301V 3.3K R3, R14, R15 1/16W, 5% Panasonic 0603 P3.3KHCT-ND
7 ERJ-3EKF1002V 10K R1, R6 to R11 1/16W, 5% Panasonic 0603 P10.0KHCT-ND
1 ERJ-3EKF1502V 15K (see note2) R12 1/16W, 5% Panasonic 0603 P15.0KHCT-ND
Capacitors
4 C0603C180J5GAC 18pF C26 to C29 50V, 5% Kemet 0603 399-1052-1-ND
18 C0603C104K5RAC 100nF C2,C3,C5 to C20 50V, 10% Kemet 0603 399-5089-1-ND
2 T520A336M006ATE070 33uF/6V C24, C25 SMD tantalum capacitor Kemet A case (EIA 3216-18) 399-4719-1-ND
2 TAJD107K020R 100uF/20V C1, C21 SMD tantalum capacitor AVX Corp. D case (EIA 7343-31) 478-1724-1-ND
Semiconductors
1 LM3940IMP-3.3 LM3940IMP-3.3 IC3 1A low dropout regulator for 5V to 3.3V conversion National Semic. SOT223 LM3940IMP-3.3CT-ND
1 TPS2051BDBV TPS2051B IC4 Current Limited Power Distribution Switch Texas Instr. SOT23-5 yes 296-21265-1-ND
1 LPC2148FBD64 LPC2148FBD64 IC5 Single-chip ARM7 32-bit microcontroller NXP LQFP64 568-1765-ND
1 CD4017BPW 4017 IC6 Decade Counter/Divider with 10 Decoded Outputs Texas Instr. TSSOP16 296-14252-1-ND
1 APT1608SURCK KP-1608SURC LED1 SMD Chip Red LED Lamp Kingbright 0603 yes 754-1123-1-ND
1 APT1608MGC KP-1608MGC LED2 SMD Chip Green LED Lamp Kingbright 0603 754-1118-1-ND
1 APT1608SYCK KP-1608SYC LED3 SMD Chip Yellow LED Lamp Kingbright 0603 yes 754-1124-1-ND
1 BC807-40 BC807 T1 PNP general purpose transistor NXP SOT23 568-1629-1-ND
Modules
1 PTH08080WAH PTH_08080W IC1 2.25A Wide-input adjustable switching regulator Texas Instr. specific 296-20432-ND
Connectors
7 53047-0310 SRV0, SRV4, SRV2, SRV6, IRV, SRV3, SRV7 J12 to J18 Picoblade 3 pins 1.25mm straight header Molex specific WM1732-ND
1 53047-0410 IRH J11 Picoblade 4 pins 1.25mm straight header Molex specific WM1733-ND
4 53047-0510 PPM,I2C,ADC2,ADC1 J4, J6, J8, J10 Picoblade 5 pins 1.25mm straight header Molex specific J6,J8,J10 WM1734-ND
3 53047-0710 SPI,CAM,DOWNLOAD/GPS J3, J5, J7 Picoblade 7 pins 1.25mm straight header Molex specific J3,J5 WM1736-ND
2 53047-0810 SERIAL,USB J2, J9 Picoblade 8 pins 1.25mm straight header Molex specific WM1737-ND
Other
1 405C35B12M00000 CTS405 12MHz Q1 SMD 12MHz Quartz Crystal CTS specific CTX639CT-ND

Downloads

Source files

Gerber & Drill files

Assembly files

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