User:Yvest - Revision history

Yvest: /* Instructions */

2007-03-27T21:23:15Z

Instructions

← Older revision		Revision as of 15:23, 27 March 2007
Line 58:		Line 58:
	===Putting telemetry in Debug mode (To add PPM messages)===		===Putting telemetry in Debug mode (To add PPM messages)===
	add ap.CFLAGS += -DTELEMETRY_MODE_FBW=1 in the aircraft. This will add the PPM messages to the list of messages send by the AP. (see the debug section of telemetry/default.xml)		add ap.CFLAGS += -DTELEMETRY_MODE_FBW=1 in the aircraft. This will add the PPM messages to the list of messages send by the AP. (see the debug section of telemetry/default.xml)
			===Connecting Xbee Pro===
			The recommanded method of connecting the Xbee module to the Autopilot controller is the remove both headers and to solder wires directly on the pads for TX, RX, Gnd and VCC (+3V3). It's recommanded to use a small 3.3V regulator connected on the wiring harness and feed from the AP 5V regulator rather then using the 3.3V from the AP. This will avoid potential problems like MCU resets, etc.
			===Configuring the Xbee Pro module===
			Comming soon

Yvest: /* Instructions */

2007-03-27T20:01:19Z

Instructions

← Older revision		Revision as of 14:01, 27 March 2007
Line 52:		Line 52:

	==Instructions==		==Instructions==
	~~===Modification of Berg4L for use with tiny===~~
	~~This is a very good receiver for many reasons, it's size/weight, range, filters are all good reasons to choose it. Here are the step you need to take to modify it for use with pprz:~~
	# remove the shrink wrap. Use a good knife and be carefull to not damage any of the components on the receiver. I would recommand that you cut on the sides (edge of the PCB) to be sure to avoid damaging the sheilding
	# Desolder the headers. We will not use them with tiny AP as the servos are connected directly to the AP. This is pretty easy to do when you have a hot air rework station. If you don't have one, your best bet is to cut the header off and remove the left over pins one by one with a regular iron. There is a piece of sheilding material that is connected to one of the ground pins of the header. You need to remove it carefully from the header without damaging it and re-solder it to the gnd pad.
	# You need to solder 3 wires to the receiver. Gnd, +5V and PPM. To locate the PPM signal, first locate the PIC micro controller close to the location of the headers. The PPM signal is on the corner pin closest to the corner of the receiver. Soldering a 28guage wire directly to the PIN isn't very difficult. For the power connection, use the pads that were used for the header. The outside pin is Gnd, the second pin is +5V. What I did is solder the wires on the pad going strait down, then I looped the 3 wires 360 degrees and glued them to the PCB with hot glue. This provides good strain relief.
	~~# While you have the PCB in your hands, take the opportunity to remove the crystal connector and solder your crystal directly to the PCB for added reliability.~~
	~~# I also used some hot glue to add more strain relief to the antenna~~
	~~# Use some large shrink wrap to cover the entire receiver again~~

	===Modification of FMA IR sensor===		===Modification of FMA IR sensor===
	Comming soon		Comming soon

Yvest: /* Modification of Berg4L for use with tiny */

2007-03-26T16:33:28Z

Modification of Berg4L for use with tiny

← Older revision		Revision as of 10:33, 26 March 2007
Line 53:		Line 53:
	==Instructions==		==Instructions==
	===Modification of Berg4L for use with tiny===		===Modification of Berg4L for use with tiny===
	This is a very good receiver for many reasons, it's size/weight, range, filters are all good reasons to choose it. Here are the step you need to take to ~~midify~~ it for use with pprz:		This is a very good receiver for many reasons, it's size/weight, range, filters are all good reasons to choose it. Here are the step you need to take to modify it for use with pprz:
	# remove the shrink wrap		# remove the shrink wrap. Use a good knife and be carefull to not damage any of the components on the receiver. I would recommand that you cut on the sides (edge of the PCB) to be sure to avoid damaging the sheilding
	# Desolder the headers. We will not use them with tiny AP as the servos are connected directly to the AP. This is pretty easy to do when you have a hot air rework station. If you don't have one, your best bet is to cut the header off and remove the left over pins one by one with a regular iron. There is a piece of sheilding material that is connected to one of the ground pins of the header. You need to remove it carefully from the header without damaging it and re-solder it to the gnd pad.		# Desolder the headers. We will not use them with tiny AP as the servos are connected directly to the AP. This is pretty easy to do when you have a hot air rework station. If you don't have one, your best bet is to cut the header off and remove the left over pins one by one with a regular iron. There is a piece of sheilding material that is connected to one of the ground pins of the header. You need to remove it carefully from the header without damaging it and re-solder it to the gnd pad.
	# You need to solder 3 wires to the receiver. Gnd, +5V and PPM. To locate the PPM signal, first locate the PIC micro controller close to the location of the headers. The PPM signal is on the corner pin closest to the corner of the receiver. Soldering a 28guage wire directly to the PIN isn't very difficult. For the power connection, use the pads that were used for the header. The outside pin is Gnd, the second pin is +5V. What I did is solder the wires on the pad going strait down, then I looped the 3 wires 360 degrees and glued them to the PCB with hot glue. This provides good strain relief.		# You need to solder 3 wires to the receiver. Gnd, +5V and PPM. To locate the PPM signal, first locate the PIC micro controller close to the location of the headers. The PPM signal is on the corner pin closest to the corner of the receiver. Soldering a 28guage wire directly to the PIN isn't very difficult. For the power connection, use the pads that were used for the header. The outside pin is Gnd, the second pin is +5V. What I did is solder the wires on the pad going strait down, then I looped the 3 wires 360 degrees and glued them to the PCB with hot glue. This provides good strain relief.

Yvest: /* Barometric Altimeter */

2007-03-26T16:29:31Z

Barometric Altimeter

← Older revision		Revision as of 10:29, 26 March 2007
Line 48:		Line 48:
	Altitude estimation thru GPS isn't very stable or precise. Because of this we could add a barometric altimeter to improve the altitude estimation.		Altitude estimation thru GPS isn't very stable or precise. Because of this we could add a barometric altimeter to improve the altitude estimation.
	Current options are:		Current options are:
	* VTI SCP1000: Direct digital reading thru a SPI interface. 17bit resolution provides as much as 9cm resolution. This sensor is very small. A breakout board is available from sparkfun.		* VTI SCP1000: Direct digital reading thru a SPI interface. 17bit resolution provides as much as 9cm resolution. This sensor is very small. A breakout board is available from sparkfun and Digikey.
	* Freescale has a good range of analog absolute pressure sensor. We could either use an extra AD channel on the LPC or use an external ADC for better resolution.		* Freescale has a good range of analog absolute pressure sensor. We could either use an extra AD channel on the LPC or use an external ADC for better resolution.

Yvest: /* Modification of Berg4L for use with tiny */

2007-03-26T15:45:57Z

Modification of Berg4L for use with tiny

← Older revision		Revision as of 09:45, 26 March 2007
Line 55:		Line 55:
	This is a very good receiver for many reasons, it's size/weight, range, filters are all good reasons to choose it. Here are the step you need to take to midify it for use with pprz:		This is a very good receiver for many reasons, it's size/weight, range, filters are all good reasons to choose it. Here are the step you need to take to midify it for use with pprz:
	# remove the shrink wrap		# remove the shrink wrap
	# Desolder the headers. We will not use them with tiny AP as the servos are connected directly to the AP.		# Desolder the headers. We will not use them with tiny AP as the servos are connected directly to the AP. This is pretty easy to do when you have a hot air rework station. If you don't have one, your best bet is to cut the header off and remove the left over pins one by one with a regular iron. There is a piece of sheilding material that is connected to one of the ground pins of the header. You need to remove it carefully from the header without damaging it and re-solder it to the gnd pad.
	# You need to solder 3 wires to the receiver. Gnd, +5V and PPM. To locate the PPM signal, first locate the PIC micro controller close to the location of the headers. The PPM signal is on the corner pin closest to the corner of the receiver. Soldering a 28guage wire directly to the PIN isn't very difficult. For the power connection, use the pads that were used for the header. The outside pin is Gnd, the second pin is +5V. What I did is solder the wires on the pad going strait down, then I looped the 3 wires 360 degrees and glued them to the PCB with hot glue. This provides good strain relief.		# You need to solder 3 wires to the receiver. Gnd, +5V and PPM. To locate the PPM signal, first locate the PIC micro controller close to the location of the headers. The PPM signal is on the corner pin closest to the corner of the receiver. Soldering a 28guage wire directly to the PIN isn't very difficult. For the power connection, use the pads that were used for the header. The outside pin is Gnd, the second pin is +5V. What I did is solder the wires on the pad going strait down, then I looped the 3 wires 360 degrees and glued them to the PCB with hot glue. This provides good strain relief.
	# While you have the PCB in your hands, take the opportunity to remove the crystal connector and solder your crystal directly to the PCB for added reliability.		# While you have the PCB in your hands, take the opportunity to remove the crystal connector and solder your crystal directly to the PCB for added reliability.

Yvest: /* Instructions */

2007-03-23T01:21:40Z

Instructions

← Older revision		Revision as of 19:21, 22 March 2007
Line 63:		Line 63:
	===Modification of FMA IR sensor===		===Modification of FMA IR sensor===
	Comming soon		Comming soon
	~~===Adding PPM to the list of messages that are sent via the Datalink===~~
	~~Comming soon~~

	===Enabling debuging of link for xbee===		===Enabling debuging of link for xbee===
	~~Comming soon~~		"export PAPARAZZI_DEBUG=x" before starting link. This will show the RSSI when using xbee transport (second number on the line that starts with getting XBee RX64: or getting XBee RX16:. Smaller is better)
			===Putting telemetry in Debug mode (To add PPM messages)===
			add ap.CFLAGS += -DTELEMETRY_MODE_FBW=1 in the aircraft. This will add the PPM messages to the list of messages send by the AP. (see the debug section of telemetry/default.xml)

Yvest: /* Varia */

2007-03-23T01:11:35Z

Varia

← Older revision		Revision as of 19:11, 22 March 2007
Line 51:		Line 51:
	* Freescale has a good range of analog absolute pressure sensor. We could either use an extra AD channel on the LPC or use an external ADC for better resolution.		* Freescale has a good range of analog absolute pressure sensor. We could either use an extra AD channel on the LPC or use an external ADC for better resolution.

	==~~Varia~~==		==Instructions==
	===Modification of Berg4L for use with tiny===		===Modification of Berg4L for use with tiny===
	This is a very good receiver for many reasons, it's size/weight, range, filters are all good reasons to choose it. Here are the step you need to take to midify it for use with pprz:		This is a very good receiver for many reasons, it's size/weight, range, filters are all good reasons to choose it. Here are the step you need to take to midify it for use with pprz:

Yvest: /* Tracking antenna */

2007-03-22T17:59:05Z

Tracking antenna

← Older revision		Revision as of 11:59, 22 March 2007
Line 42:		Line 42:
	I'm considering these sensors:		I'm considering these sensors:
	*GPS: to find the location of the antenna. We could either set the coordonate of the antenna manually before the flight for a fix antenna or use the GPS to have the possibility to install the antenna on a moving vehicule		*GPS: to find the location of the antenna. We could either set the coordonate of the antenna manually before the flight for a fix antenna or use the GPS to have the possibility to install the antenna on a moving vehicule
	*Dual axis accelerometers: To provide mesurement of the elevation of the antenna		*Dual axis accelerometers: To provide mesurement of the elevation of the antenna (tilt angle)
	*Magnetometer: To provide the azimut of the antenna		*Magnetometer: To provide the azimut of the antenna

	===Barometric Altimeter===		===Barometric Altimeter===
	Altitude estimation thru GPS isn't very stable or precise. Because of this we could add a barometric altimeter to improve the altitude estimation.		Altitude estimation thru GPS isn't very stable or precise. Because of this we could add a barometric altimeter to improve the altitude estimation.

Yvest: /* Modification of FMA IR sensor */

2007-03-22T17:57:43Z

Modification of FMA IR sensor

← Older revision		Revision as of 11:57, 22 March 2007
Line 62:		Line 62:
	===Modification of FMA IR sensor===		===Modification of FMA IR sensor===
	Comming soon		Comming soon
	===Adding PPM to the list of messages that are sent via the Datalink		===Adding PPM to the list of messages that are sent via the Datalink===
	Comming soon		Comming soon

	===Enabling debuging of link for xbee===		===Enabling debuging of link for xbee===
	Comming soon		Comming soon

Yvest at 17:57, 22 March 2007

2007-03-22T17:57:06Z

← Older revision		Revision as of 11:57, 22 March 2007
Line 33:		Line 33:
	* Tuning of the control loops		* Tuning of the control loops
	* Tuning of the Navigation gain		* Tuning of the Navigation gain

			==Projects that I'm interrested on developing to contribute to the project==
			===USB tunnel===
			Code that will turn your tiny into a virtual serial port (ala ftdi chip) for the configuation of the GPS. Basic functionality is working, but I have severe issue with overruns and I wasn't able to make it work with the bootloader.
			===Tracking antenna===
			My take on this is that we should use off the self hardware so that it's easier for most people to build and use. Using a Pan & Tilt head driven by RC servo such as those sold by Servo city should fit the bill. We could use a tiny controller to drive the servo.

			I'm considering these sensors:
			*GPS: to find the location of the antenna. We could either set the coordonate of the antenna manually before the flight for a fix antenna or use the GPS to have the possibility to install the antenna on a moving vehicule
			*Dual axis accelerometers: To provide mesurement of the elevation of the antenna
			*Magnetometer: To provide the azimut of the antenna
			===Barometric Altimeter===
			Altitude estimation thru GPS isn't very stable or precise. Because of this we could add a barometric altimeter to improve the altitude estimation.
			Current options are:
			* VTI SCP1000: Direct digital reading thru a SPI interface. 17bit resolution provides as much as 9cm resolution. This sensor is very small. A breakout board is available from sparkfun.
			* Freescale has a good range of analog absolute pressure sensor. We could either use an extra AD channel on the LPC or use an external ADC for better resolution.

			==Varia==
			===Modification of Berg4L for use with tiny===
			This is a very good receiver for many reasons, it's size/weight, range, filters are all good reasons to choose it. Here are the step you need to take to midify it for use with pprz:
			# remove the shrink wrap
			# Desolder the headers. We will not use them with tiny AP as the servos are connected directly to the AP.
			# You need to solder 3 wires to the receiver. Gnd, +5V and PPM. To locate the PPM signal, first locate the PIC micro controller close to the location of the headers. The PPM signal is on the corner pin closest to the corner of the receiver. Soldering a 28guage wire directly to the PIN isn't very difficult. For the power connection, use the pads that were used for the header. The outside pin is Gnd, the second pin is +5V. What I did is solder the wires on the pad going strait down, then I looped the 3 wires 360 degrees and glued them to the PCB with hot glue. This provides good strain relief.
			# While you have the PCB in your hands, take the opportunity to remove the crystal connector and solder your crystal directly to the PCB for added reliability.
			# I also used some hot glue to add more strain relief to the antenna
			# Use some large shrink wrap to cover the entire receiver again

			===Modification of FMA IR sensor===
			Comming soon
			===Adding PPM to the list of messages that are sent via the Datalink
			Comming soon
			===Enabling debuging of link for xbee===
			Comming soon