Difference between revisions of "Yapa"

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"'''Y'''et '''A'''nother '''P'''aparazzi '''A'''utopilot '''v1''' and '''v2'''."<br>
[[Yapa|Yapa]] is very similar to the [[Twog_v1|Twog_v1]] but has standard 100mil headers for direct standard servo connections, and has an option to put the xbee/lt2510 on the autopilot-board itself. Yapa still uses the good old LPC21 so if you are looking for the more efficient and performant STM32 you will need a [[Lisa]]
''When would you use a TWOG'':
*size and weight matter
*you have a Molex Crimper
''When YAPA might be useful'':
*you want to use the exact same airframe file as in a TWOG
*but you want mounting holes
*or you want standard servo connectors or have high power servo's
*a few extra grams don't matter
*want to connect any serial device (from a TLL/RS232 GPS to the latest [RS422 v1 only] XSens Mti-G)
*you want to connect an rs232[/485/422 v1 only] modem or an XBee/LT2510 directly
== Hardware Revision History ==
{|border="1"  cellspacing="0" style="text-align:center" cellpadding="6"
!''Version #''!!''Release Date''!!''Release Notes''
|v2.00||02/2011||Redesign: replaced the dual very expensive rs422/485/232 multiprotocol driver with a single rs232 and much more IO pins
|v1.00||07/2010||Initial release of Yapa v1
== Yapa v2 ==
* [[Media:yapa2.pdf]] Manual Only
* [[Media:yapa2.zip]] Gerbers, BOMs, Pick-Place, PDF
Image:yapa_v2_xsens.jpg|Sample Use [[http://www.youtube.com/watch?v=_JOgOLuDQXY]]
Image:yapa2.jpg|A few
=== Features ===
* upgrade on v1 with
* 10 servo's instead of 8 (caution: standard pprz code only drives 8)
* extra ADC
* GPS-reset
* Cam-Switch
* Remotely locatable USB (without need to unsolder the usb on the board)
* Remotely locatable XBee (or other) modem
* Resistor to select RS232 or 3.3V GPS/IMU/Modem
* 3 LED instead of 1
* More space around the mounting holes
== Yapa v1 ==
Image:Yapa_v1-00_top.jpg|Top side
Image:Yapa_v1-00_bottom.jpg|Bottom side
=== Features ===
* Basic Design very similar to [[Twog_v1|Twog_v1]] (uses same autopilot configuration file 'tiny2_1_1.h')
* 100mil headers instead of the (nice and lighter) Molex connectors
* Support Holes (e.g. use M3 bobbins: [http://nl.farnell.com/fivistop/0808vv06-45/mount-bobbin-male-male/dp/4995880])
* 5 x Analog 3.3V inputs with 2 of them low pass filtered
* (Optional) 2x RS232/RS422/RS485/3.3TLL serial ports for connecting virtually any serial device (if using xbee: then 1 port)
* (Optional) Onboard (optional) Xbee Modem
* 8 x PWM outputs on standard 1/10th inch headers
* 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) with either onboard mini-usb AND/OR remotely located USB Plug
* 2x 3.3v / 1A linear regulator for Processor and for XBee modem separated for safety
* 1 x status LEDs
* 80.0 x 40.0mm
* 23 grams including 2.4GHz Xbee Pro, all 100mil headers, usb connector, 2.5Amp 5V DCDC and serial converter
* 1 power switch with current limiter
* 2 layers PCB design, 0603 components
* (Optional) onboard 5v / 2.25A switching power supply (input voltage range 6.1v &rarr; 18v)
* 3 power options using a jumper/bridge to connect the servo power rail to the autopilot 5V power rail:
# In the case of few very low power servo's: you power your servo's from the autopilot power (not recommended: in any case check to make sure all servo's together never ever use more than 1.5 amp even when blocked)
# In the case of a high quality external BEC: you can omit the onboard regulator and power everything from the BEC.
# Otherwise: separated onboard autopilot 5V power and externally supplied servo power
== Architecture ==
[[Image:Yapa_v1-00_schematics.png|900px|Yapa v1.0 Schematic]]
== Files ==
== Problems Comments Ordering Change Requests Etc ==

Latest revision as of 02:11, 11 December 2011

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