Hi fellow Rocketeers,
Here is my first newbie question......Considering my flight kit only contains an Icom IC-R10 receiver and 70cm yagi for tracking, your opinions on flight tracking and control hardware would be appreciated.
Big Red Bee, Altus Metrum, Eggimer kit or something else.......
Thanks in advance
Chris
PML 1/4 patriot on its' way
Hardware Choices?
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Hardware Choices?
The trouble with doing nothing is never knowing when you have finished - Benjamin Franklin
- OverTheTop
- It's only money...
- Posts: 2932
- Joined: Sat Jul 21, 2007 2:20 pm
- Location: Melbourne, Australia
Re: Hardware Choices?
I love the Altus Metrum products. They are not cheap, but the ease of use and slick software are worth paying for IMHO. The four additional channels on the TeleMegas I have are useful for feeding voltages from other avionics so you can have confidence in them before pushing the button.
I have built some Eggfinders but never flown them (gave them to someone else to fly). Many people are having great results with them I hear.
BRB, Kate, so many choices...
I have built some Eggfinders but never flown them (gave them to someone else to fly). Many people are having great results with them I hear.
BRB, Kate, so many choices...
TRA #13430
L3
"Everybody's simulation model is guilty until proven innocent" (Thomas H. Lawrence 1994)
L3
"Everybody's simulation model is guilty until proven innocent" (Thomas H. Lawrence 1994)
Re: Hardware Choices?
Did someone say "PML 1/4 PATRIOT on its' way", yeah baby...
"In thrust we trust"
AMRS 21 L3 RSO
TRA 07459 L3
Impulse:
2020: 00,000 Ns (0% Z)
Ns 19: 14,725; 18: 14,767; 17: 5,973; 16: 34,558; 15: 35,955; 14: 6,016; 13: 10,208
PB - Gorilla N2717WC, H: 10,260', S: M1.14
AMRS 21 L3 RSO
TRA 07459 L3
Impulse:
2020: 00,000 Ns (0% Z)
Ns 19: 14,725; 18: 14,767; 17: 5,973; 16: 34,558; 15: 35,955; 14: 6,016; 13: 10,208
PB - Gorilla N2717WC, H: 10,260', S: M1.14
- SpaceManMat
- Astronaut
- Posts: 2297
- Joined: Mon Dec 15, 2008 9:56 pm
- Location: Brisbane
Re: Hardware Choices?
Anything over 3k should have a GPS tracker on it IMO. Your choice of unit is going to depend on a lot on your budget and also your requirements.
Do you want integrated Altimiter GPS?
All the egg products are kits, although you can get them built by someone else if you choose. Cannot go past these for value.
Do you want integrated Altimiter GPS?
All the egg products are kits, although you can get them built by someone else if you choose. Cannot go past these for value.
Re: Hardware Choices?
Given your skillset vk6tnc I reckon the eggtimer GPS would be a good choice. That said EggTimer uses a GPS chipset that isn't optimised for 3D movement. If I was going to build one of those I'd put in a uBlox 7 based GPS unit, like this.
https://www.sparkfun.com/products/13670
ksaves is from TRF posted this in the customer reviews section.
So it seems that you can build an EggTimer GPS tracker and leverage uBlox 7 GPS hardware.
The problem with your Icom is that it doesn't have an APRS TNC or GPS. Given that you don't really have all that you'd need to easily accomplish decoding the APRS packets without either a breakout box, APRS/GPS capable handheld radio, or your laptop. Ideally you'd want GPS on your "ground station" as you can then get bearing and distance values, but that's not absolutely necessary. So buying BRB which are effectively "pure" APRS based GPS trackers you'd need to pair it with one of the above.
AltusMetrum is a good choice but you're locked in to their system unless you change the unit's default configuration to output APRS. So you've got to leverage a TeleDongle + computer or TeleBT + smartphone or tablet to receive telemetry. That said they do telemetry which is pretty cool. They also leverage uBlox 7 chipsets across their product range now which is nice.
If it was me, I'd buy a TeleGPS and be done with it. They're killer units, small and lightweight; I've fitted one along with a Raven into a Performance Rocketry 38mm FG Von Karman Nose Cone before. Plus I've had a couple issues with TeleMetrums and deployment so I'm a bit hesitant to recommend the all in one solutions. That said I did just pull the trigger on an EasyMega because PYRO CHANNELS.
Then there's Lisa/Kate. You might need to sell your car to buy one though.
Finally, there's the homebrew solution. Strud and Chris Barnes have both rolled their own units. The beauty of that is the ability to control every aspect of the unit's functionality. The downside is heaps of work.
https://www.sparkfun.com/products/13670
ksaves is from TRF posted this in the customer reviews section.
Works fine
about a year ago by ksaves2 verified purchaser
Works perfectly fine with an unlicensed ISM tracker. Ditched the onboard GPS and added this unit to it by soldering the signal cable to the board and used the 3.3V power output on an earlier version of the device http://www.eggtimerrocketry.com/page45.php
So it seems that you can build an EggTimer GPS tracker and leverage uBlox 7 GPS hardware.
The problem with your Icom is that it doesn't have an APRS TNC or GPS. Given that you don't really have all that you'd need to easily accomplish decoding the APRS packets without either a breakout box, APRS/GPS capable handheld radio, or your laptop. Ideally you'd want GPS on your "ground station" as you can then get bearing and distance values, but that's not absolutely necessary. So buying BRB which are effectively "pure" APRS based GPS trackers you'd need to pair it with one of the above.
AltusMetrum is a good choice but you're locked in to their system unless you change the unit's default configuration to output APRS. So you've got to leverage a TeleDongle + computer or TeleBT + smartphone or tablet to receive telemetry. That said they do telemetry which is pretty cool. They also leverage uBlox 7 chipsets across their product range now which is nice.
If it was me, I'd buy a TeleGPS and be done with it. They're killer units, small and lightweight; I've fitted one along with a Raven into a Performance Rocketry 38mm FG Von Karman Nose Cone before. Plus I've had a couple issues with TeleMetrums and deployment so I'm a bit hesitant to recommend the all in one solutions. That said I did just pull the trigger on an EasyMega because PYRO CHANNELS.
Then there's Lisa/Kate. You might need to sell your car to buy one though.
Finally, there's the homebrew solution. Strud and Chris Barnes have both rolled their own units. The beauty of that is the ability to control every aspect of the unit's functionality. The downside is heaps of work.
Andrew Hamilton
AMRS 28 L3
AMRS Records Committee Chairman
Max Alt AGL - 26,850ft - L935 - THUNDA 2019
Max V - 3,004 ft/s, ~Mach 2.67 - L935 - THUNDA 2019
AMRS 28 L3
AMRS Records Committee Chairman
Max Alt AGL - 26,850ft - L935 - THUNDA 2019
Max V - 3,004 ft/s, ~Mach 2.67 - L935 - THUNDA 2019
Re: Hardware Choices?
CATO wrote:Did someone say "PML 1/4 PATRIOT on its' way", yeah baby...
Heh. When Chris told me he had a 1/4 scale Patriot on the way my first thought was "CATO will be pleased".
Andrew Hamilton
AMRS 28 L3
AMRS Records Committee Chairman
Max Alt AGL - 26,850ft - L935 - THUNDA 2019
Max V - 3,004 ft/s, ~Mach 2.67 - L935 - THUNDA 2019
AMRS 28 L3
AMRS Records Committee Chairman
Max Alt AGL - 26,850ft - L935 - THUNDA 2019
Max V - 3,004 ft/s, ~Mach 2.67 - L935 - THUNDA 2019
- SpaceManMat
- Astronaut
- Posts: 2297
- Joined: Mon Dec 15, 2008 9:56 pm
- Location: Brisbane
Re: Hardware Choices?
The TRS eggtimer is both altimeter and GRS, it transmits Altimiter baro data although not in a standard NMEA sentence. I believe the LCD Tx does however ustilise the baro data.
Re: Hardware Choices?
drew wrote:CATO wrote:Did someone say "PML 1/4 PATRIOT on its' way", yeah baby...
Heh. When Chris told me he had a 1/4 scale Patriot on the way my first thought was "CATO will be pleased".

"In thrust we trust"
AMRS 21 L3 RSO
TRA 07459 L3
Impulse:
2020: 00,000 Ns (0% Z)
Ns 19: 14,725; 18: 14,767; 17: 5,973; 16: 34,558; 15: 35,955; 14: 6,016; 13: 10,208
PB - Gorilla N2717WC, H: 10,260', S: M1.14
AMRS 21 L3 RSO
TRA 07459 L3
Impulse:
2020: 00,000 Ns (0% Z)
Ns 19: 14,725; 18: 14,767; 17: 5,973; 16: 34,558; 15: 35,955; 14: 6,016; 13: 10,208
PB - Gorilla N2717WC, H: 10,260', S: M1.14
Re: Hardware Choices?
SpaceManMat wrote:The TRS eggtimer is both altimeter and GRS, it transmits Altimiter baro data although not in a standard NMEA sentence. I believe the LCD Tx does however ustilise the baro data.
I'm no expert but I thought the Eggtimer range didn't have GPS...
Andrew Hamilton
AMRS 28 L3
AMRS Records Committee Chairman
Max Alt AGL - 26,850ft - L935 - THUNDA 2019
Max V - 3,004 ft/s, ~Mach 2.67 - L935 - THUNDA 2019
AMRS 28 L3
AMRS Records Committee Chairman
Max Alt AGL - 26,850ft - L935 - THUNDA 2019
Max V - 3,004 ft/s, ~Mach 2.67 - L935 - THUNDA 2019
- SpaceManMat
- Astronaut
- Posts: 2297
- Joined: Mon Dec 15, 2008 9:56 pm
- Location: Brisbane
Re: Hardware Choices?
drew wrote:SpaceManMat wrote:The TRS eggtimer is both altimeter and GRS, it transmits Altimiter baro data although not in a standard NMEA sentence. I believe the LCD Tx does however ustilise the baro data.
I'm no expert but I thought the Eggtimer range didn't have GPS...
From their page "The Eggtimer TRS is an integrated flight computer and GPS rocket-recovery solution".
So I'll agree with the first part of your statement but not the second

- OverTheTop
- It's only money...
- Posts: 2932
- Joined: Sat Jul 21, 2007 2:20 pm
- Location: Melbourne, Australia
Re: Hardware Choices?
They have a tracking only version (and a mini version of that as well), and a full flight computer with baro and GPS tracking.
Easy to assemble. Cheap. Go for it! I recently built a TRS, LCD and Quantum.
VK3TRK
Easy to assemble. Cheap. Go for it! I recently built a TRS, LCD and Quantum.
VK3TRK
TRA #13430
L3
"Everybody's simulation model is guilty until proven innocent" (Thomas H. Lawrence 1994)
L3
"Everybody's simulation model is guilty until proven innocent" (Thomas H. Lawrence 1994)
Re: Hardware Choices?
I just have to chime in here from previous discussions, but unless the documentation has by some miracle been circulated without my knowledge, eggtimers are STILL ILLEGAL IN AUSTRALIA and NEW ZEALAND. Because of this, further discussions about the use of these on this forum will be removed.
Additionally, eggtimers will NOT be permitted at launches.
As others have said, BRB range of products are very robust and reliable. LISA (aka Australia version of KATE) is by far the best tracker on the market but also has he price tag to show it. These are definitely the ultimate option for extreme flights, especially with the yet to be released add-on controllers. (I had a sneak peak of these recently in the USA and can't wait to fly with them). In fact, LISA (and accessories) will soon be available as a regular item on the ausrocketry.com.au webstore.
Additionally, eggtimers will NOT be permitted at launches.
As others have said, BRB range of products are very robust and reliable. LISA (aka Australia version of KATE) is by far the best tracker on the market but also has he price tag to show it. These are definitely the ultimate option for extreme flights, especially with the yet to be released add-on controllers. (I had a sneak peak of these recently in the USA and can't wait to fly with them). In fact, LISA (and accessories) will soon be available as a regular item on the ausrocketry.com.au webstore.
QRS Secretary
AMRS #3 L3 ACO
Life member of QRS
NAR L2 #98260
MDRA Member #0241
AMRS #3 L3 ACO
Life member of QRS
NAR L2 #98260
MDRA Member #0241
Re: Hardware Choices?
Can we have a statement about the use of Amateur radio equipment usage at launches please ? since I would think that prohibiting appropriately licenced operators from using their equipment might exclude a number of people you might want to remain involved in the hobby.
Re: Hardware Choices?
strud wrote:Can we have a statement about the use of Amateur radio equipment usage at launches please ? since I would think that prohibiting appropriately licenced operators from using their equipment might exclude a number of people you might want to remain involved in the hobby.
I don't think a statement as such is required, licensed users can fill their boots with their applicable products, however products that breach the ACMA regulations will not be tolerated.
Sent from my iPhone using Tapatalk
QRS Secretary
AMRS #3 L3 ACO
Life member of QRS
NAR L2 #98260
MDRA Member #0241
AMRS #3 L3 ACO
Life member of QRS
NAR L2 #98260
MDRA Member #0241
Re: Hardware Choices?
kopius wrote:.............. eggtimers are STILL ILLEGAL IN AUSTRALIA and NEW ZEALAND. Because of this, further discussions about the use of these on this forum will be removed.....
Forgive my ignorance but what makes them illegal?

IAAH
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