Difference between revisions of "Tiny v2"

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The complete re-design of the popular Tiny autopilot was done on October 9, 2007. The new design is not a bug-fix as no known flaws exist with the current 0.99 and 1.1 versions, so the redesign is performance, easy to use and easy to assemble-oriented !
#REDIRECT [[Tiny/v2.11]]
[[Image:Tiny_v2-1_3D_top.jpg|right|500px|Tiny v2.11 3D top view (18mm GPS antenna)]]
 
== Hardware Revision History ==
 
{|border="1"  cellspacing="0" style="text-align:center" cellpadding="6"
!''Version #''!!''Release Date''!!''Release Notes''
|-
|v2.11||12/2007||Bug fix : GPS Reset pin protection (D2)
|-
|v2.1||10/2007||3.3V regulator type changed, power switch type changed, connectivity improved
|-
|v2.0||06/2007||Initial release of Tiny v2
|}
 
 
== Features ==
 
* Single [http://www.standardics.nxp.com/products/lpc2000/lpc214x 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 [http://en.wikipedia.org/wiki/Serial_Peripheral_Interface SPI] bus
* 1 x [http://en.wikipedia.org/wiki/I2c I<sup>2</sup>C] bus
* 1 x USB (client)
* Integrated GPS receiver and patch antenna (4Hz update)
* 5V/2.5A switching power supply & 3.3V/1A linear regulator
* 3 x status LEDs with attached test point
* ?? grams
* 70.8 x 40mm (smaller then a banking card)
* 2 layers PCB design, 0603 components
 
<gallery>
Image:Tiny_v2-1_3D_top.jpg|Tiny v2.1 3D top view (18mm GPS antenna)
Image:Tiny_v2-1_3D_bottom.jpg|Tiny v2.1 3D bottom view
Image:Tiny_2_1_top_side.jpg|Tiny v2.1 top side view (13mm GPS antenna)
Image:Tiny_2_1_bottom_side.jpg|Tiny v2.1 bottom side view
</gallery>
 
The Tiny v2.1 autopilot uses a single Philips LPC2148 ARM7 based microcontroller.
The [http://www.arm.com/products/CPUs/families/ARM7Family.html ARM7] is a low-power 32-bit RISC processor core and the [http://www.standardics.philips.com/products/lpc2000/ Philips LPC2148] has 512KB on-chip Flash ROM, 40KB RAM and can be clocked at 60MHz.
 
Although critical control code such as the R/C interface and servo output are well segregated in Paparazzi software and well protected from interference from flaws in the stability/navigation/comm/payload code, great care must be taken when experimenting with new software as some errors can cause a the processor to halt or stall for extended periods causing total loss of control.
 
=== Feature additions : Tiny 2.1 vs Tiny 1.1 ===
 
* Hardware flow control on the modem
: The LPC has one "full-featured" serial port and one basic serial port.
::Tiny v1.1 had the full-featured port hard-wired to the GPS in order to leave the basic port open for initial bootloader programming.
::Tiny v2.1 exchange these ports and use the GPS Reset signal to "disconnect" the GPS for the one-time bootloader programming. Hardware flow control on the modem is now possible.
 
* 5V switching power supply
::The Texas Instruments [http://focus.ti.com/docs/prod/folders/print/pth08080w.html PTH08080WAH] switching 5V/2.25A integrated power supply module greatly simplify manufacturing, reduce costs, and improve performance.
::Tiny v2.1 have a voltage input range of 6.1V &rarr; 18V and enough 5V power for large servos, high-power modems and video systems.
 
* 3.3V linear regulator
:Tiny v2.1 use a [http://www.national.com/mpf/LM/LM3940.html LM3940] 1A regulator for 5V to 3.3V conversion in a SOT223 standard pinout package which is capable of providing plenty of power to modems or other devices.
:Tests have shown that any device with irregular power consumption can cause significant voltage fluctuations on the critical 3.3V bus.
:Users are advised to use a separate regulator as needed for such devices.
 
* Video/payload power switch.
:The TPS1100 transistor used on the Tiny v1.1 design has proven extremely useful but is intended for high-speed power switching of motor controllers and occupies a 5mm x 6mm space (SOIC-8).
:The replacement on the new Tiny v2.1 is a current-limiting switch TPS2051B intended for peripheral power control and should protect the 5V supply from voltage sags during the power-up of high capacitance peripherals as well as allow the 5V supply to continue working in the event of a complete short-circuit in the payload.
:: [http://www.digikey.com/scripts/DkSearch/dksus.dll?PName?Name=296-21265-1-ND&Site=US TPS2051BDBVR] Single 500mA (1A limited) switch in a 3mm x 3mm SOT23-5 package
 
* GPS ground plane and antenna
:The 13mm antenna on previous Tiny v1.1 proved to be an unworthy exchange of performance for weight. Crude parking-lot tests showed an approximate 3dBi loss (as expected from the data sheets), but the narrow bandwidth of the small antenna made it more sensitive to de-tuning from nearby components in the aircraft.  Flight performance was acceptable but poor climb rate calculations were observed with the smaller antenna.  Tiny 1.1 users are advised to fit a 20mm antenna.
::Tiny v2.1 use a 18mm x 4mm antenna (20mm x 4mm is possible but no more available) and feature 30% more ground plane area (40 x 40mm).
 
* GPS Reset
:Occasionally the GPS fails to boot properly, displays very poor S/N ratios, and fails to obtain a valid fix. This may be caused by a slow power-up of the 5V or 3V regulators, or by some unusual EMI that is only present at boot. Usually a simple power cycle will correct the problem but occasionally the receiver seems to use the backup battery to retain the bad state.
:: On the Tiny v2.1 design GPS reset is connected to a GPIO pin on the MCU and allow the operator to reset the GPS as needed.
 
*Headers
:Tiny v2.1 feature revised header layouts on all peripherals.
::*The modem header have CTS/RTS/DTR and both 5V and 3.3V supplies.(3.3V is shared with LPC and ADC channels - use with caution and only with very low power modems like the 10mW Xbee).
::*The Tiny v1.1 button is removed and it's function is combined on the USB header along with a LED trigger so that indicator, button, and USB can be remotely mounted.
::* Vertical Infrared (1 ADC) with 3.3v supply
::* Horizontal Infrared (2 ADC) with 3.3v supply
::* 2 general purpose ADC with both 3.3v and 5v supplies
::* 2 general purpose ADC with optional on-board resistor bridge and both 3.3v and 5v supplies
::* Two axis Camera control with two servo signal, vdo switch control, vdo power switch and both 5V and 3.3V supplies
::* SPI bus with 3.3V supply
::* I2C bus with both 5V and 3V supplies
 
* Leds & testpoints
:3 status LEDs with attached test point available on Tiny v2.1 design (instead 2 on Tiny v1.1)
 
* Components size
:Many users (not only beginners) don't really think that 0402 components on Tiny v1.1 is a great saving from any viewpoint. Even if one saves a little space by using these components, there must still be enough room around to solder it by hand with a soldering iron.
:Tiny v2.1 use 0603 components, the assembly should be a bit more friendly to everyone.
 
* Layers amount
:Tiny v2.1 2 Layer design (instead 4 Layers on Tiny v1.1) should simplify manufacturing and reduce costs.
 
== Architecture ==
[[Image:Tiny_v2_Architecture.png]]
 
== Pinout ==
Pins Name and Type are specified with respect to the Autopilot Board
 
[[Image:Tiny_v2-1_pinout.png]]
 
 
{|border="1"  cellspacing="0" style="text-align:center" cellpadding="6"
|+'''SERIAL'''
!''Pin #''!!width="80"|''Name''!!''Type''!!width="500"|''Description''!!width="50"|''Suggested Color''
|-
|1||GND||PWR||common ground||style="background:black; color:white"|Black
|-
|2|| +5V||PWR||5V Rail from Tiny||style="background:Orange; color:white"|Orange
|-
|3|| +3.3V||PWR||3.3V Rail from Tiny||style="background:Red; color:white"|Red
|-
|4||DTR|| || ||
|-
|5||CTS|| || ||
|-
|6||RTS|| || ||
|-
|7||RXD1||IN||UART1 Serial Input (3.3V level, 5V Tolerant)||style="background:green; color:white"|Green
|-
|8||TXD1||OUT||UART1 Serial Output (3.3V level)||style="background:blue; color:white"|Blue
|}
 
 
{|border="1"  cellspacing="0" style="text-align:center" cellpadding="6"
|+'''SPI'''
!''Pin #''!!width="80"|''Name''!!''Type''!!width="500"|''Description''!!width="50"|''Suggested Color''
|-
|1||GND||PWR||common ground||style="background:black; color:white"|Black
|-
|2|| +3.3V||PWR||3.3V Rail from Tiny||style="background:red; color:white"|Red
|-
|3||SSEL||IN||SSP Slave Select. Selects the SSP interface as a slave (SSEL1)||style="background:sienna; color:white"|Braun
|-
|4||MOSI||I/O||SPI1 Master Out Slave In. Data output from master or data input to slave||style="background:Grey; color:white"|Grey
|-
|5||MISO||I/O||SPI1 Master In Slave Out. Data input to master or data output from slave||style="background:Green; color:white"|Green
|-
|6||DRDY||IN||External interrupt 0 input (EINT0)||style="background:Purple; color:white"|Purple
|-
|7||SCK||I/O||SPI0 Serial clock. Clock output from master or input to slave||style="background:Yellow; color:black"|Yellow
|}
 
 
{|border="1"  cellspacing="0" style="text-align:center" cellpadding="6"
|+'''PPM'''
!''Pin #''!!width="80"|''Name''!!''Type''!!width="500"|''Description''!!width="50"|''Suggested Color''
|-
|1||GND||PWR||common ground||style="background:black; color:white"|Black
|-
|2|| +5v||PWR||5V Rail from Tiny to R/C receiver supply||style="background:Orange; color:white"|Orange
|-
|3||PPM_IN||IN||PPM Stream from R/C Receiver (5V tolerant)||style="background:white; color:black"|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''
 
 
{|border="1"  cellspacing="0" style="text-align:center" cellpadding="6"
|+'''USB'''
!''Pin #''!!width="80"|''Name''!!''Type''!!width="500"|''Description''!!width="50"|''Suggested Color''
|-
|1||GND||PWR||common ground||style="background:black; color:white"|Black
|-
|2|| +3.3V||PWR||3.3V Rail from Tiny||style="background:red; color:white"|Red
|-
|3||USB+||I/O||USB bidirectional D+ line||style="background:green; color:white"|Green
|-
|4||USB-||I/O||USB bidirectional D- line||style="background:white; color:black"|White
|-
|5||VBUS||IN||Indicates the presence of USB bus power (P0.23) (5V level)||style="background:orange; color:white"|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||
|}
 
 
{|border="1"  cellspacing="0" style="text-align:center" cellpadding="6"
|+'''IRV'''
!''Pin #''!!width="80"|''Name''!!''Type''!!width="500"|''Description''!!width="50"|''Suggested Color''
|-
|1||GND||PWR||common ground||style="background:black; color:white"|Black
|-
|2|| +3.3V||PWR||3.3V Rail from Tiny||style="background:red; color:white"|Red
|-
|3||IRV||IN||Vertical IR Sensor signal (Analog to Digital Converter Input #0)||style="background:Purple; color:white"|Purple
|}
 
 
{|border="1"  cellspacing="0" style="text-align:center" cellpadding="6"
|+'''IRH'''
!''Pin #''!!width="80"|''Name''!!''Type''!!width="500"|''Description''!!width="50"|''Suggested Color''
|-
|1||GND||PWR||common ground||style="background:black; color:white"|Black
|-
|2|| +3.3V||PWR||3.3V Rail from Tiny||style="background:red; color:white"|Red
|-
|3||IRH_2||IN||Horizontal IR Sensor signal axis 2 (Analog to Digital Converter Input #2)||style="background:Grey; color:white"|Grey
|-
|4||IRH_1||IN||Horizontal IR Sensor signal axis 1 (Analog to Digital Converter Input #1)||style="background:Sienna; color:white"|Braun
|}
 
 
{|border="1"  cellspacing="0" style="text-align:center" cellpadding="6"
|+'''ADC1'''
!''Pin #''!!width="80"|''Name''!!''Type''!!width="500"|''Description''!!width="50"|''Suggested Color''
|-
|1||GND||PWR||common ground||style="background:black; color:white"|Black
|-
|2|| +5v||PWR||5V Rail from Tiny||style="background:Orange; color:white"|Orange
|-
|3|| +3.3V||PWR||3.3V Rail from Tiny||style="background:red; color:white"|Red
|-
|4||ADC_4||IN||Analog to Digital Converter Input #4||
|-
|5||ADC_3||IN||Analog to Digital Converter Input #3||
|}
 
 
{|border="1"  cellspacing="0" style="text-align:center" cellpadding="6"
|+'''ADC2'''
!''Pin #''!!width="80"|''Name''!!''Type''!!width="500"|''Description''!!width="50"|''Suggested Color''
|-
|1||GND||PWR||common ground||style="background:black; color:white"|Black
|-
|2|| +5v||PWR||5V Rail from Tiny||style="background:Orange; color:white"|Orange
|-
|3|| +3.3V||PWR||3.3V Rail from Tiny||style="background:red; color:white"|Red
|-
|4||ADC_6||IN||Analog to Digital Converter Input #6 (Maximum input level can be selected with R12 & R14 values)||
|-
|5||ADC_5||IN||Analog to Digital Converter Input #5 (Maximum input level can be selected with R13 & R15 values)||
|}
 
 
{|border="1"  cellspacing="0" style="text-align:center" cellpadding="6"
|+'''DOWNLOAD'''
!''Pin #''!!width="80"|''Name''!!''Type''!!width="500"|''Description''!!width="50"|''Suggested Color''
|-
|1||GND||PWR||common ground||style="background:black; color:white"|Black
|-
|2|| +5v||PWR||5V Rail from Tiny||style="background:Orange; color:white"|Orange
|-
|3|| +3.3V||PWR||3.3V Rail from Tiny||style="background:red; color:white"|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 (shared with GPS receiver)||style="background:blue; color:white"|Blue
|-
|7||RXD0||IN||UART0 Serial Input (shared with GPS receiver)||style="background:green; color:white"|Green
|}
''Note 2 : Holding this pin low for at least 3mS after a RESET (or power up) instructs the controller to enter programming mode.''
 
 
{|border="1"  cellspacing="0" style="text-align:center" cellpadding="6"
|+'''I2C'''
!''Pin #''!!width="80"|''Name''!!''Type''!!width="500"|''Description''!!width="50"|''Suggested Color''
|-
|1||GND||PWR||common ground||style="background:black; color:white"|Black
|-
|2|| +5V||PWR||5V Rail from Tiny||style="background:Orange; color:white"|Orange
|-
|3|| +3.3V||PWR||3.3V Rail from Tiny||style="background:red; color:white"|Red
|-
|4||SDA||I/O||I2C bus Serial DAta||
|-
|5||SCL||I/O||I2C bus Serial CLock||
|}
 
 
{|border="1"  cellspacing="0" style="text-align:center" cellpadding="6"
|+'''CAM'''
!''Pin #''!!width="80"|''Name''!!''Type''!!width="500"|''Description''!!width="50"|''Suggested Color''
|-
|1||GND||PWR||common ground||style="background:black; color:white"|Black
|-
|2|| +5V||PWR||5V Rail from Tiny||style="background:Orange; color:white"|Orange
|-
|3|| +3.3V||PWR||3.3V Rail from Tiny||style="background:red; color:white"|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 ==
<gallery>
Image:Tiny v2-1 Schematic.png|Tiny v2.11 Schematic
</gallery>
 
== PCB ==
<gallery>
Image:Tiny_v2-1_PCB_top.jpg|Tiny v2.1 PCB top side view (Olimex)
Image:Tiny_v2-1_Top_Copper.png|Tiny v2.11 PCB top copper
Image:Tiny_v2-1_PCB_bottom.jpg|Tiny v2.1 PCB bottom side view (Olimex)
Image:Tiny_v2-1_Bottom_Copper.png|Tiny v2.11 PCB bottom copper
</gallery>
 
=== Gerber & Drill Files  ===
 
''Download [[Media:Gerber_for_Tiny_v2-11.zip|Tiny v2.11 gerber & drill files (zip)]]''
 
RS274X, units = Inches, format = 2:5
 
:*Tiny_v2-11.GTO (Top Component Print Layer)
:*Tiny_v2-11.GTS (Top Solder Mask)
:*Tiny_v2-11.GTL (Top Copper Layer)
:*Tiny_v2-11.GBL (Bottom Copper Layer)
:*Tiny_v2-11.GBS (Bottom Solder Mask)
:*Tiny_v2-11.DRI (NC XY coordinates & Drill tools sizes)
 
=== Possible PCB Manufacturers ===
 
:*[http://www.olimex.com/pcb/ Olimex]
 
== Assembly ==
 
===Components Layout===
<gallery>
Image:Tiny_v2-1_2D_top.jpg|Tiny v2.11 top components Layout
Image:Tiny_v2-1_2D_bottom.jpg|Tiny v2.11 bottom components Layout
Image:Tiny_v2-1_Top_Components.png|Tiny v2.11 top components details
Image:Tiny_v2-1_Bottom_Components.png|Tiny v2.11 bottom components details
</gallery>
 
=== Bill Of Material ===
download ''[[Media:Tiny_v2-11_BOM.zip|Tiny v2.11 Bill Of Material (zipped .xls file)]]''
 
== Hardware Revision History ==
 
{|border="1"  cellspacing="0" style="text-align:center" cellpadding="6"
!''Version #''!!''Release Date''!!''Release Notes''
|-
|v2.11||12/2007||Bug fix : GPS Reset pin protection (D2)
|-
|v2.1||10/2007||3.3V regulator type changed, power switch type changed, connectivity improved
|-
|v2.0||06/2007||Initial release of Tiny v2
|}
 
 
== Features ==
 
* Single [http://www.standardics.nxp.com/products/lpc2000/lpc214x 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 [http://en.wikipedia.org/wiki/Serial_Peripheral_Interface SPI] bus
* 1 x [http://en.wikipedia.org/wiki/I2c I<sup>2</sup>C] bus
* 1 x USB (client)
* Integrated GPS receiver and patch antenna (4Hz update)
* 5V/2.5A switching power supply & 3.3V/1A linear regulator
* 3 x status LEDs with attached test point
* ?? grams
* 70.8 x 40mm (smaller then a banking card)
* 2 layers PCB design, 0603 components
 
<gallery>
Image:Tiny_v2-1_3D_top.jpg|Tiny v2.1 3D top view (18mm GPS antenna)
Image:Tiny_v2-1_3D_bottom.jpg|Tiny v2.1 3D bottom view
Image:Tiny_2_1_top_side.jpg|Tiny v2.1 top side view (13mm GPS antenna)
Image:Tiny_2_1_bottom_side.jpg|Tiny v2.1 bottom side view
</gallery>
 
The Tiny v2.1 autopilot uses a single Philips LPC2148 ARM7 based microcontroller.
The [http://www.arm.com/products/CPUs/families/ARM7Family.html ARM7] is a low-power 32-bit RISC processor core and the [http://www.standardics.philips.com/products/lpc2000/ Philips LPC2148] has 512KB on-chip Flash ROM, 40KB RAM and can be clocked at 60MHz.
 
Although critical control code such as the R/C interface and servo output are well segregated in Paparazzi software and well protected from interference from flaws in the stability/navigation/comm/payload code, great care must be taken when experimenting with new software as some errors can cause a the processor to halt or stall for extended periods causing total loss of control.
 
=== Feature additions : Tiny 2.1 vs Tiny 1.1 ===
 
* Hardware flow control on the modem
: The LPC has one "full-featured" serial port and one basic serial port.
::Tiny v1.1 had the full-featured port hard-wired to the GPS in order to leave the basic port open for initial bootloader programming.
::Tiny v2.1 exchange these ports and use the GPS Reset signal to "disconnect" the GPS for the one-time bootloader programming. Hardware flow control on the modem is now possible.
 
* 5V switching power supply
::The Texas Instruments [http://focus.ti.com/docs/prod/folders/print/pth08080w.html PTH08080WAH] switching 5V/2.25A integrated power supply module greatly simplify manufacturing, reduce costs, and improve performance.
::Tiny v2.1 have a voltage input range of 6.1V &rarr; 18V and enough 5V power for large servos, high-power modems and video systems.
 
* 3.3V linear regulator
:Tiny v2.1 use a [http://www.national.com/mpf/LM/LM3940.html LM3940] 1A regulator for 5V to 3.3V conversion in a SOT223 standard pinout package which is capable of providing plenty of power to modems or other devices.
:Tests have shown that any device with irregular power consumption can cause significant voltage fluctuations on the critical 3.3V bus.
:Users are advised to use a separate regulator as needed for such devices.
 
* Video/payload power switch.
:The TPS1100 transistor used on the Tiny v1.1 design has proven extremely useful but is intended for high-speed power switching of motor controllers and occupies a 5mm x 6mm space (SOIC-8).
:The replacement on the new Tiny v2.1 is a current-limiting switch TPS2051B intended for peripheral power control and should protect the 5V supply from voltage sags during the power-up of high capacitance peripherals as well as allow the 5V supply to continue working in the event of a complete short-circuit in the payload.
:: [http://www.digikey.com/scripts/DkSearch/dksus.dll?PName?Name=296-21265-1-ND&Site=US TPS2051BDBVR] Single 500mA (1A limited) switch in a 3mm x 3mm SOT23-5 package
 
* GPS ground plane and antenna
:The 13mm antenna on previous Tiny v1.1 proved to be an unworthy exchange of performance for weight. Crude parking-lot tests showed an approximate 3dBi loss (as expected from the data sheets), but the narrow bandwidth of the small antenna made it more sensitive to de-tuning from nearby components in the aircraft.  Flight performance was acceptable but poor climb rate calculations were observed with the smaller antenna.  Tiny 1.1 users are advised to fit a 20mm antenna.
::Tiny v2.1 use a 18mm x 4mm antenna (20mm x 4mm is possible but no more available) and feature 30% more ground plane area (40 x 40mm).
 
* GPS Reset
:Occasionally the GPS fails to boot properly, displays very poor S/N ratios, and fails to obtain a valid fix. This may be caused by a slow power-up of the 5V or 3V regulators, or by some unusual EMI that is only present at boot. Usually a simple power cycle will correct the problem but occasionally the receiver seems to use the backup battery to retain the bad state.
:: On the Tiny v2.1 design GPS reset is connected to a GPIO pin on the MCU and allow the operator to reset the GPS as needed.
 
*Headers
:Tiny v2.1 feature revised header layouts on all peripherals.
::*The modem header have CTS/RTS/DTR and both 5V and 3.3V supplies.(3.3V is shared with LPC and ADC channels - use with caution and only with very low power modems like the 10mW Xbee).
::*The Tiny v1.1 button is removed and it's function is combined on the USB header along with a LED trigger so that indicator, button, and USB can be remotely mounted.
::* Vertical Infrared (1 ADC) with 3.3v supply
::* Horizontal Infrared (2 ADC) with 3.3v supply
::* 2 general purpose ADC with both 3.3v and 5v supplies
::* 2 general purpose ADC with optional on-board resistor bridge and both 3.3v and 5v supplies
::* Two axis Camera control with two servo signal, vdo switch control, vdo power switch and both 5V and 3.3V supplies
::* SPI bus with 3.3V supply
::* I2C bus with both 5V and 3V supplies
 
* Leds & testpoints
:3 status LEDs with attached test point available on Tiny v2.1 design (instead 2 on Tiny v1.1)
 
* Components size
:Many users (not only beginners) don't really think that 0402 components on Tiny v1.1 is a great saving from any viewpoint. Even if one saves a little space by using these components, there must still be enough room around to solder it by hand with a soldering iron.
:Tiny v2.1 use 0603 components, the assembly should be a bit more friendly to everyone.
 
* Layers amount
:Tiny v2.1 2 Layer design (instead 4 Layers on Tiny v1.1) should simplify manufacturing and reduce costs.
 
== Architecture ==
[[Image:Tiny_v2_Architecture.png]]
 
== Pinout ==
Pins Name and Type are specified with respect to the Autopilot Board
 
[[Image:Tiny_v2-1_pinout.png]]
 
 
{|border="1"  cellspacing="0" style="text-align:center" cellpadding="6"
|+'''Bill Of Material'''
!''Qty''!!''Manufacturer part #''!!''Schematic part name / value''!!''Designator''!!''Description''
|-
|1||GND||PWR||common ground||style="background:black; color:white"|Black
|-
 
|8||TXD1||OUT||UART1 Serial Output (3.3V level)||style="background:blue; color:white"|Blue
|}
 
 
 
== Downloads ==
 
 
'''Source files'''
:*download ''[[Media:Tiny_v2-11_Protel_design.zip|Tiny v2.11 Protel 99SE SP6 design (zipped Protel 99 ddb file)]]''
:*download ''[[Media:Tiny_v2-11_whole_design.pdf|Tiny v2.11 whole design (pdf)]]''
'''Gerber & Drill files'''
:*download ''[[Media:Gerber_for_Tiny_v2-11.zip|Tiny v2.11 gerber & drill files (zip)]]''
'''Assembly files'''
:*download ''[[Media:Tiny_v2-11_Components_layouts.pdf|Tiny v2.11 Components layouts (pdf)]]''
:*download ''[[Media:Tiny_v2-11_BOM.zip|Tiny v2.11 Bill Of Material (zipped .xls file)]]''

Latest revision as of 01:35, 11 December 2011

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