Spektrum Telemetry module and iPhone App.
#602
My Feedback: (3)
RE: Spektrum Telemetry module and iPhone App.
If you simply can't wait for a Spektrum current module to come out, this is one alternative. I actually don't know why one would want to know current in a model in flight. Just use a watt meter on the ground for a test run. Once characterized, the system's performance shouldn't change. In flight, the battery voltage will be a reflection of the current usage anyhow. But......
Assuming the voltage measuring wire that goes from the TM1000 to the AR8000 receiver is measuring voltage directly, one could measure current too. What you'd do is place a 1 ohm power resistor (http://catalog.chtechnology.com/Asset/RSSD.pdf) in series on the red lead from the receiver battery. Then run a wire from each end of the resistor to the voltage measuring wires that would normally go to the AR8000. Put the red wire on the end of the resistor closest to the battery, and the black one on the other end of the resistor.
What you're doing is measuring the voltage drop across the resistor, which in a 1 ohm resistor, is equal to the current flowing. If you're doing the measuring on an electric plane, the resistor must handle the wattage expected of the overall system including the motor. Say, 800W. If you're interested in current from just the receiver pack, a much lower power rating is all one would need. Maybe 5 watts.
For the electric plane situation, best to try this on the bench and check the resistor's temperature just to make sure it doesn't get too hot. It might be necessary to make sure it's not touching anything once mounted. For just the receiver pack, this shouldn't be a problem.
Assuming the voltage measuring wire that goes from the TM1000 to the AR8000 receiver is measuring voltage directly, one could measure current too. What you'd do is place a 1 ohm power resistor (http://catalog.chtechnology.com/Asset/RSSD.pdf) in series on the red lead from the receiver battery. Then run a wire from each end of the resistor to the voltage measuring wires that would normally go to the AR8000. Put the red wire on the end of the resistor closest to the battery, and the black one on the other end of the resistor.
What you're doing is measuring the voltage drop across the resistor, which in a 1 ohm resistor, is equal to the current flowing. If you're doing the measuring on an electric plane, the resistor must handle the wattage expected of the overall system including the motor. Say, 800W. If you're interested in current from just the receiver pack, a much lower power rating is all one would need. Maybe 5 watts.
For the electric plane situation, best to try this on the bench and check the resistor's temperature just to make sure it doesn't get too hot. It might be necessary to make sure it's not touching anything once mounted. For just the receiver pack, this shouldn't be a problem.
#603
My Feedback: (2)
RE: Spektrum Telemetry module and iPhone App.
ORIGINAL: Pull Up Now!
If you simply can't wait for a Spektrum current module to come out, this is one alternative. I actually don't know why one would want to know current in a model in flight. Just use a watt meter on the ground for a test run. Once characterized, the system's performance shouldn't change. In flight, the battery voltage will be a reflection of the current usage anyhow. But......
Assuming the voltage measuring wire that goes from the TM1000 to the AR8000 receiver is measuring voltage directly, one could measure current too. What you'd do is place a 1 ohm power resistor (http://catalog.chtechnology.com/Asset/RSSD.pdf) in series on the red lead from the receiver battery. Then run a wire from each end of the resistor to the voltage measuring wires that would normally go to the AR8000. Put the red wire on the end of the resistor closest to the battery, and the black one on the other end of the resistor.
What you're doing is measuring the voltage drop across the resistor, which in a 1 ohm resistor, is equal to the current flowing. If you're doing the measuring on an electric plane, the resistor must handle the wattage expected of the overall system including the motor. Say, 800W. If you're interested in current from just the receiver pack, a much lower power rating is all one would need. Maybe 5 watts.
For the electric plane situation, best to try this on the bench and check the resistor's temperature just to make sure it doesn't get too hot. It might be necessary to make sure it's not touching anything once mounted. For just the receiver pack, this shouldn't be a problem.
If you simply can't wait for a Spektrum current module to come out, this is one alternative. I actually don't know why one would want to know current in a model in flight. Just use a watt meter on the ground for a test run. Once characterized, the system's performance shouldn't change. In flight, the battery voltage will be a reflection of the current usage anyhow. But......
Assuming the voltage measuring wire that goes from the TM1000 to the AR8000 receiver is measuring voltage directly, one could measure current too. What you'd do is place a 1 ohm power resistor (http://catalog.chtechnology.com/Asset/RSSD.pdf) in series on the red lead from the receiver battery. Then run a wire from each end of the resistor to the voltage measuring wires that would normally go to the AR8000. Put the red wire on the end of the resistor closest to the battery, and the black one on the other end of the resistor.
What you're doing is measuring the voltage drop across the resistor, which in a 1 ohm resistor, is equal to the current flowing. If you're doing the measuring on an electric plane, the resistor must handle the wattage expected of the overall system including the motor. Say, 800W. If you're interested in current from just the receiver pack, a much lower power rating is all one would need. Maybe 5 watts.
For the electric plane situation, best to try this on the bench and check the resistor's temperature just to make sure it doesn't get too hot. It might be necessary to make sure it's not touching anything once mounted. For just the receiver pack, this shouldn't be a problem.
#604
My Feedback: (3)
RE: Spektrum Telemetry module and iPhone App.
If you know the current already, why do you need to measure wattage? It's 7000 watts. As for measuring in the air, the prop will unload, so the rpm will rise a little, and the current will drop below the 140 amps. So, if you want to know HOW MUCH below the 140 amps it will draw, I can understand that. But if you're worried it will increase towards the 160 A ESC limit, you don't need to. The voltage alone is the best telemetry parameter for in-the-air use. It's the most analogous to a gas gage.
#605
My Feedback: (2)
RE: Spektrum Telemetry module and iPhone App.
ORIGINAL: Pull Up Now!
If you know the current already, why do you need to measure wattage? It's 7000 watts. As for measuring in the air, the prop will unload, so the rpm will rise a little, and the current will drop below the 140 amps. So, if you want to know HOW MUCH below the 140 amps it will draw, I can understand that. But if you're worried it will increase towards the 160 A ESC limit, you don't need to. The voltage alone is the best telemetry parameter for in-the-air use. It's the most analogous to a gas gage.
If you know the current already, why do you need to measure wattage? It's 7000 watts. As for measuring in the air, the prop will unload, so the rpm will rise a little, and the current will drop below the 140 amps. So, if you want to know HOW MUCH below the 140 amps it will draw, I can understand that. But if you're worried it will increase towards the 160 A ESC limit, you don't need to. The voltage alone is the best telemetry parameter for in-the-air use. It's the most analogous to a gas gage.
On a side note, I have tapped the battery leads to my ESC and connected that to the Volts port on the TM1000. I start my flight at 50 volts and end, 5 min later, at 45v. When I try to set the Volts warning at 45v, I find that the alarm goes off as soon as I turn on the Tx/Rx and Arm the motor battery, yet, I know that the voltage is at 50v.
#606
RE: Spektrum Telemetry module and iPhone App.
ORIGINAL: Pull Up Now!
Assuming the voltage measuring wire that goes from the TM1000 to the AR8000 receiver is measuring voltage directly, one could measure current too. What you'd do is place a 1 ohm power resistor (http://catalog.chtechnology.com/Asset/RSSD.pdf) in series on the red lead from the receiver battery. Then run a wire from each end of the resistor to the voltage measuring wires that would normally go to the AR8000. Put the red wire on the end of the resistor closest to the battery, and the black one on the other end of the resistor.
Assuming the voltage measuring wire that goes from the TM1000 to the AR8000 receiver is measuring voltage directly, one could measure current too. What you'd do is place a 1 ohm power resistor (http://catalog.chtechnology.com/Asset/RSSD.pdf) in series on the red lead from the receiver battery. Then run a wire from each end of the resistor to the voltage measuring wires that would normally go to the AR8000. Put the red wire on the end of the resistor closest to the battery, and the black one on the other end of the resistor.
The black lead from the TM1000 is connected to the common ground of the radio system. Connecting it as mentioned will be a short circuit and magic smoke will leak all over the place.
Andy
#607
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RE: Spektrum Telemetry module and iPhone App.
And on another topic, this pertaining to mounting of the pitot tube for airspeed measuring. I have an old pattern plane that I wanted to restore and put telemetry on-board. Its called Domino Nr. 1 due to the paint scheme. Here's a picture, along with DominoNr2 which is Electric, actually a revised Leader480 shown in the background.
For the old pattern bird I wanted to test the location on top of the vertical fin, and most felt that this would result in erroneous readings due to propwash. Well yesterday, I finally had room to bring it along to the field and do some testing. Guess what, works like a charm. I saw now airspeed reading while on the ground, got the usual alarm "No Speed" and once in the air was reading between 40 and 60 mph which is probably pretty close. In flight, the tube is probably 1 inch above the prop arc of the 13x6 prop spun by a speed Webra .91 and did not seem to read even during WOT on ground test and when pointed nose up.
It was neat to put this old bird up in the sky again, 8.5 pounds of medium speed flying, big loops and fairly quick rolls.
What's next?
I've run out of old birds to restore... the Highly modified Carl Goldberg 112 (two falcon 56 wings)
was restored and flown on a new ST .51 and there's nothing left in the attic.
KKKKFL
For the old pattern bird I wanted to test the location on top of the vertical fin, and most felt that this would result in erroneous readings due to propwash. Well yesterday, I finally had room to bring it along to the field and do some testing. Guess what, works like a charm. I saw now airspeed reading while on the ground, got the usual alarm "No Speed" and once in the air was reading between 40 and 60 mph which is probably pretty close. In flight, the tube is probably 1 inch above the prop arc of the 13x6 prop spun by a speed Webra .91 and did not seem to read even during WOT on ground test and when pointed nose up.
It was neat to put this old bird up in the sky again, 8.5 pounds of medium speed flying, big loops and fairly quick rolls.
What's next?
I've run out of old birds to restore... the Highly modified Carl Goldberg 112 (two falcon 56 wings)
was restored and flown on a new ST .51 and there's nothing left in the attic.
KKKKFL
#608
RE: Spektrum Telemetry module and iPhone App.
Franco you should post those pix over in the Classic Pattern forum either here or RCG (lots of us are on both, although RCU seems to be less "happening" any more).
Andy
Andy
#609
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RE: Spektrum Telemetry module and iPhone App.
Can someone help me with the STi and data record. I can get it to work on one model, and cant get it to record for replay on another. I don't want the AUTO feature. I just want to have it record the sensors for replay. I have selected the "Start" log, but sometimes I just get the audio saying Temp. Other times the needles show, the audio works for all sensors, but when I try and do a replay, there's about a seconds worth of data.
Is there a fool proof way to ensure its recording prior to take off?
Thanks
KKKKFL
Is there a fool proof way to ensure its recording prior to take off?
Thanks
KKKKFL
#611
My Feedback: (11)
RE: Spektrum Telemetry module and iPhone App.
Problem with RPM Telemetry Sensor.... Tx=Spektrum DX8 ... Telemetry Module=TM-1000 ... rx=Spektrum AR8000 .... 3 cell power to motors.
Multiplex Permax bl-480/6d (specs below)
I have hooked up the RPM telemetry sensor to the motor stated above... I cannot get good rpm readings on the the DX8 radio... it is either garbage or nothing at all. I set the number of poles on the RPM screen.. it is not zeroing and at one point was over speed warning. I am using the 37amp Multiplex speed control. There seems to be a lot of lag in the readings.
Can someone please tell me what I am doing wrong? Thank you
Motor kV 2120
Gear Ratio N/A - Direct Drive
No Load Current 1.2 amps
Maximum Current 25 amps
Current @ Max Efficiency 18 amps
Motor Weight 4.23 oz (120 g)
Motor Length 1.81 inches
Gear Box Length N/A
Prop Shaft Diameter 3.17 mm
Recommended Prop Range 5 to 7 inch
Battery Power Voltage 2 to 3 cell Lipo
Stator Winding 6 turns
Pole Count 4 pole
UPDATE: I talked with Tech Support... they are replacing the sensor.
.
.
Multiplex Permax bl-480/6d (specs below)
I have hooked up the RPM telemetry sensor to the motor stated above... I cannot get good rpm readings on the the DX8 radio... it is either garbage or nothing at all. I set the number of poles on the RPM screen.. it is not zeroing and at one point was over speed warning. I am using the 37amp Multiplex speed control. There seems to be a lot of lag in the readings.
Can someone please tell me what I am doing wrong? Thank you
Motor kV 2120
Gear Ratio N/A - Direct Drive
No Load Current 1.2 amps
Maximum Current 25 amps
Current @ Max Efficiency 18 amps
Motor Weight 4.23 oz (120 g)
Motor Length 1.81 inches
Gear Box Length N/A
Prop Shaft Diameter 3.17 mm
Recommended Prop Range 5 to 7 inch
Battery Power Voltage 2 to 3 cell Lipo
Stator Winding 6 turns
Pole Count 4 pole
UPDATE: I talked with Tech Support... they are replacing the sensor.
.
.
#612
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RE: Spektrum Telemetry module and iPhone App.
My 2 cents...... and mine alone based on weeks of trying to get good readings, ABANDON the electronic RPM sensor. Especially if you are using a brushless motor. The optical sensor is much more reliable gives readings across a wider range (ie. it will read down to 700RPM, and doesn't go bonkers when you back off the throttle) I believe the part is SPMA 1452 and it costs 7 bucks 5 bucks for shipping.
You will need to change the connector which is a 5 minute task.
KKKKFL
You will need to change the connector which is a 5 minute task.
KKKKFL
#613
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RE: Spektrum Telemetry module and iPhone App.
I get the button to change to Stop logging, I then fly, and when I go to replay, I have 2 seconds of data. Several times, the audio stops announcing the speed and the altitude, and just reports temperature. I think this might indicate that a connector is loose? It's just one plane that does this. I do have all TM1k's set to do MANUAL, which I believe is just that, ie start when I say start and don't stop till I press stop.
Is that the way Manual is supposed to work?
Thanks
KKKKFL
Is that the way Manual is supposed to work?
Thanks
KKKKFL
#614
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RE: Spektrum Telemetry module and iPhone App.
Franco
Yes that is the way it is supposed to work.On Manual when you tap Start Log it should go until you tap Stop Log.
When logging is active you should have a Red Dot on the upper left of the screen also.
I had this happen a few times.At the end of the flight I went to stop it and the Red Dot was gone.Seems it had only logged a few seconds.
I would check it right after takeoff/launch and hit Start again if necessary.iPod mostly.iPhone works ok.
Are you using an IPhone or Ipod touch? I had to reload on my Ipod a few times and its works good now.Seems to work alot better on my iPhone.
When I use it I also disable AutoLock and set it to Never on the iDevice.I think that helped more than anything.
I figure a couple versions and it will smooth out more.So far so good for me except for an occasional hiccup here and there.
Oh yeah.When it stops reporting its usually the signal/missing frames I think.Ive messed with the antenna locations and on the 1000 if you can get it back and out/towards the bottom you will get the best reliability.
Yes that is the way it is supposed to work.On Manual when you tap Start Log it should go until you tap Stop Log.
When logging is active you should have a Red Dot on the upper left of the screen also.
I had this happen a few times.At the end of the flight I went to stop it and the Red Dot was gone.Seems it had only logged a few seconds.
I would check it right after takeoff/launch and hit Start again if necessary.iPod mostly.iPhone works ok.
Are you using an IPhone or Ipod touch? I had to reload on my Ipod a few times and its works good now.Seems to work alot better on my iPhone.
When I use it I also disable AutoLock and set it to Never on the iDevice.I think that helped more than anything.
I figure a couple versions and it will smooth out more.So far so good for me except for an occasional hiccup here and there.
Oh yeah.When it stops reporting its usually the signal/missing frames I think.Ive messed with the antenna locations and on the 1000 if you can get it back and out/towards the bottom you will get the best reliability.
#615
My Feedback: (11)
RE: Spektrum Telemetry module and iPhone App.
That was worth at least a dime... Horizon is replacing the sensor... I think that you wrote a review on the product for their web site. I will give it another go before I change up... but you may have well saved me a lot of time... I am not happy right now. I do have the voltage, airspeed, and altitude sensors working...
Is it possible to have two sensors for a twin engined plane? That would be pretty cool.
Is it possible to have two sensors for a twin engined plane? That would be pretty cool.
ORIGINAL: Franco2fly
My 2 cents...... and mine alone based on weeks of trying to get good readings, ABANDON the electronic RPM sensor. Especially if you are using a brushless motor. The optical sensor is much more reliable gives readings across a wider range (ie. it will read down to 700RPM, and doesn't go bonkers when you back off the throttle) I believe the part is SPMA 1452 and it costs 7 bucks 5 bucks for shipping.
You will need to change the connector which is a 5 minute task.
KKKKFL
My 2 cents...... and mine alone based on weeks of trying to get good readings, ABANDON the electronic RPM sensor. Especially if you are using a brushless motor. The optical sensor is much more reliable gives readings across a wider range (ie. it will read down to 700RPM, and doesn't go bonkers when you back off the throttle) I believe the part is SPMA 1452 and it costs 7 bucks 5 bucks for shipping.
You will need to change the connector which is a 5 minute task.
KKKKFL
#616
RE: Spektrum Telemetry module and iPhone App.
Is it possible to have two sensors for a twin engined plane? That would be pretty cool.
Andy
#617
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RE: Spektrum Telemetry module and iPhone App.
I'm using an iPhone and my stupid work IT department have something embedded in their webmail application that disables screen lock settings so it only allows the 5 minute setting. What I might try is to make some use of phone just prior to take off
Thanks for that tip
Kkkkfl
#618
RE: Spektrum Telemetry module and iPhone App.
ORIGINAL: Franco2fly
I'm using an iPhone and my stupid work IT department have something embedded in their webmail application that disables screen lock settings so it only allows the 5 minute setting. What I might try is to make some use of phone just prior to take off
I'm using an iPhone and my stupid work IT department have something embedded in their webmail application that disables screen lock settings so it only allows the 5 minute setting. What I might try is to make some use of phone just prior to take off
Thanks for that tip
Kkkkfl
#619
My Feedback: (3)
RE: Spektrum Telemetry module and iPhone App.
ORIGINAL: Franco2fly
I'm using an iPhone and my stupid work IT department have something embedded in their webmail application that disables screen lock settings so it only allows the 5 minute setting. What I might try is to make some use of phone just prior to take off
I'm using an iPhone and my stupid work IT department have something embedded in their webmail application that disables screen lock settings so it only allows the 5 minute setting. What I might try is to make some use of phone just prior to take off
Thanks for that tip
Kkkkfl
How about just using your old iPhone, without the work email, and the fact it has no telephone signal shouldn't hurt anything?
One thing you can count on. If you have an iPhone now, you WILL have an old one soon.
#620
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RE: Spektrum Telemetry module and iPhone App.
hahaha aint that the truth. BTW it has nothing to do with company policy... I think we have all been sold a boatload of paranoia on password protection. In our company, they make you change it every other week. I change it and after week 2 the "change your password" alerts start coming. I wait until the day before it expires.
I like the idea of purchasing a new one and removing the Company Webmail. A better plan is to retire and move south. Just need to convince my better half.
KKKKFL
I like the idea of purchasing a new one and removing the Company Webmail. A better plan is to retire and move south. Just need to convince my better half.
KKKKFL
#621
My Feedback: (11)
RE: Spektrum Telemetry module and iPhone App.
Reporting back, based on your suggestion.. I went ahead and ordered the optical sensors and connectors... BUT HOLD THE HORSES....
Horizon came through and sent me a replacement sensor at no charge. I just finished hooking it up and ... guess what... It is working... pretty much parallels my tachometer... a bit of lag, but that is acceptable...
All in all, I am pretty happy with the sensor and Horizon stepping up to the plate.... nice job Horizon.
Horizon came through and sent me a replacement sensor at no charge. I just finished hooking it up and ... guess what... It is working... pretty much parallels my tachometer... a bit of lag, but that is acceptable...
All in all, I am pretty happy with the sensor and Horizon stepping up to the plate.... nice job Horizon.
ORIGINAL: on_your_six
That was worth at least a dime... Horizon is replacing the sensor... I think that you wrote a review on the product for their web site. I will give it another go before I change up... but you may have well saved me a lot of time... I am not happy right now. I do have the voltage, airspeed, and altitude sensors working...
Is it possible to have two sensors for a twin engined plane? That would be pretty cool.
That was worth at least a dime... Horizon is replacing the sensor... I think that you wrote a review on the product for their web site. I will give it another go before I change up... but you may have well saved me a lot of time... I am not happy right now. I do have the voltage, airspeed, and altitude sensors working...
Is it possible to have two sensors for a twin engined plane? That would be pretty cool.
ORIGINAL: Franco2fly
My 2 cents...... and mine alone based on weeks of trying to get good readings, ABANDON the electronic RPM sensor. Especially if you are using a brushless motor. The optical sensor is much more reliable gives readings across a wider range (ie. it will read down to 700RPM, and doesn't go bonkers when you back off the throttle) I believe the part is SPMA 1452 and it costs 7 bucks 5 bucks for shipping.
You will need to change the connector which is a 5 minute task.
KKKKFL
My 2 cents...... and mine alone based on weeks of trying to get good readings, ABANDON the electronic RPM sensor. Especially if you are using a brushless motor. The optical sensor is much more reliable gives readings across a wider range (ie. it will read down to 700RPM, and doesn't go bonkers when you back off the throttle) I believe the part is SPMA 1452 and it costs 7 bucks 5 bucks for shipping.
You will need to change the connector which is a 5 minute task.
KKKKFL
#623
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RE: Spektrum Telemetry module and iPhone App.
Is there any API or interface specification available for use of the STI module on the iphone/ipad? I develop iOS apps (hobby, not day job) and am interested in rolling my own interface.
Paul
#624
RE: Spektrum Telemetry module and iPhone App.
ORIGINAL: pmeyer
Is there any API or interface specification available for use of the STI module on the iphone/ipad? I develop iOS apps (hobby, not day job) and am interested in rolling my own interface.
Paul
Is there any API or interface specification available for use of the STI module on the iphone/ipad? I develop iOS apps (hobby, not day job) and am interested in rolling my own interface.
Paul
#625
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RE: Spektrum Telemetry module and iPhone App.
I don't have an STI yet, so it is hard to tell exactly what features the app has.
I've got telemetry on my dx8, and I'm mostly interested in thermal sniffing. I don't want to look away from my plane or listen to a spoken voice. I jest want some audible tone based on vertical speed. I'd need to experiment to see what combination of tones/beeps/alarms works best.
I'm uncomfortable spending $100 on the module and depending on one existing app with an unknown future, especially when I can easily create something simpler/better (for my purposes) then the generic app.
Paul
I've got telemetry on my dx8, and I'm mostly interested in thermal sniffing. I don't want to look away from my plane or listen to a spoken voice. I jest want some audible tone based on vertical speed. I'd need to experiment to see what combination of tones/beeps/alarms works best.
I'm uncomfortable spending $100 on the module and depending on one existing app with an unknown future, especially when I can easily create something simpler/better (for my purposes) then the generic app.
Paul