- Ohms Law Calculator
- Oil mixture calculator
- scale speed calculator
- battery time calculator
- lipo low end voltage levels
- mac calculator
- cg calculator
- airplane trimming guide
- lap timer/stopwatch
- watts performance table
- glow to electric conversion
- power calculator
- note pad
- check lists
- static thrust estimator
- gear/transmission/final drive ration calculator
- servo tester
- Unit conversion tool
- flight and battery log
Interested in testing the beta versions of this app? Get an invite at https://plus.google.com/u/0/communities/115842947644643792560
The Watcher always shows you which battery you should use at next.
A review is available here:
Even in the basic version, the batteries can be managed easily.
The batteries are grouped by RC model (heli , helicopter, airplane, car, boat, drone etc.) and are given a unique number.
The state of charge can be easily changed per battery.
All actions are stored in the logbook!
The Premium version extends the product to great comfort functions that greatly simplify the everyday life of an RC pilot. Batteries can be scanned by NFC or QR code. There are also two widgets for those who do not want to scan.
Basic version (free):
- Management of all RC models
- Management of all batteries (three lists of charged, uncharged and stored batteries )
- Battery charging levels can be changed
- Battery Storage
- Sort batteries by number of cycles
- Sort batteries by last charge date
- Sort batteries by number
- Logbook & statistics for all RC models
- Logbook & statistics of all batteries
- Copy of batteries
- Backup and recovery (use SD Card, Clouds Storage eg Dropbox, Google Drive)
Premium Version (can be purchased as in app buy):
- QR Code generation: Generate QR Codes for each battery, print them out and stick them onto each battery. The built-in scanner will now detect the batteries easily!
- QR Code Scanner: Identify via the built-in scanner to change your batteries charge state.
- Write NFC tags (on Metal): Equip your batteries with NFC tags. Program that tags with the RC Battery Watcher. Note: Please use special "On Metal NFC tags" because normal NFC tags may not not work on batteries(magnetic field disturbance, metal).
- Scan NFC tags: Identify your battery via NFC to change their charge state.
- RC Action Mode Widget: Shows you based on the cycles immediately, which battery you should use next.
- RC Charge Widget: Change battery states with one Klick.
- No ads
This app is available in languages German, English and French.
Write me if you suggestions, bugs or any ideas! email@example.com
Tags: RC Manager, RC Log, modelmaking, model-making, battery, flight, heli, helicopter, car, ship, lipo, lipo watcher
+ events like flights, charge, discharge, purchase and installation,
+ models and their
+ batteries and
The following functions are provided or rather you can see (http://www.wruck.biz/html/rc-battery-flight-log.html):
+ Creating and modifying models with these features: number, name, picture of model, purchase date, purchase cost, number of flights, type of battery, etc.
+ Creating and modifying of batteries with the properties: number, name, picture of the battery, purchase date, purchase cost, capacity, type, capacity used, number of flights, charging cycles, condition and fill level.
+ Creating and modifying events.
+ Flight with properties: flight date and time, special features (crash, deep discharge, other), consumed capacity, endurance, your flight location and more.
+ Charging with properties: date, time and charged capacity.
+ Discharging with properties: date, time and discharged capacity.
+ Purchase and Installation (maintenance, repair or upgrade).
+ New events can be created quickly and easily.
+ An overview for all events and for each model and battery.
+ Backup (Export) to SD-Card
+ Restore (Import) form SD-Card by selecting one of all backups (the backups are stored in the /mnt/sdcard/data/RC-Heli-Battery folder)
+ Sync with a server, so you have many devices in sync and you can get public locations (Usually the service is available, but I can not guarantee.)
+ Charts for analyses (Number of flights, flight time, usage per day, week, month or year for a selected model or battery)
+ Support for Pulsar3 charger.
+ For devices with NFC: Handle NFC tags to call the app or the Pulsar3 - UI with automatic connection and for battery and model selection.
Detailed description: http://www.wruck.biz/html/rc-battery-flight-log.html
Full version historie: http://www.wruck.biz/html/version-history.html
Try it, it's truly useful. Now also with unit conversions, wing loading, cubic wing loading and energy density.
(Please Note: This app has no malware and requires the following standard Android permissions only:
1) Network Access:
View Wifi & networks: To check for new versions.
2) Phone Calls: To hide when a call comes through.
3) Storage: To install on the SD card if needed.)
Please EMAIL if you have a problem, we can NOT help though the comments section.
Use RC E-Calc Pro Calculate the following:
- Average Current Used by the aircraft during a flight/run.
- Average Discharge Rate (C-rate) of the LiPo battery during a flight/run.
- Expected Run Time at average current used.
- Expected Run Time using 100% capacity of a battery.
- Expected Run Time using 80% capacity of a battery.
- Realistic Run Time using 80% capacity of a battery and (selectable) average throttle.
- Power in Watts from Volts & Amps.
- Volts from Power(W) & Amps.
- Current in Amps from Power(W) & Volts.
- Static thrust of a propeller in pounds or kilograms.
- Power to Weight Ratio in Watts-per-pound or Watts-per-kilogram.
New for v2.1:
- Unit Conversions (Torque, Mass, Length)
- Cubic Wing Loading (Imperial and Metric)
- Wing Loading (Imperial and Metric)
New for v2.21:
- Resize and refit for better display on tablets or devices with very large fonts
- Reworked Unit Conversions
- Cosmetic improvements to layout
- throttle value choice in Approximate Flight Time
New for v2.3
- Added Battery cell gravimetric energy density calculation in Wh/kg
- UI enhancements and fixes
- Smaller fonts
- Cosmetic improvements to layout
- Unit Conversions improved
(Note: It is highly recommended to fly using only 80% of the capacity of LiPo batteries to maximize their longevity)
a) If your system uses 16 Amps, input 2200mAh and 16A into the app and it'll calculate that you should be able to fly (at FULL throttle) for 6 minutes 36 seconds until the battery is 80% depleted or 8 minutes 15 seconds (also at FULL throttle) until it is 100% depleted.
a) "Realistic" flight time is also calculated which works out to be 11 minutes and 47 seconds using 80% capacity and 60% average throttle, very close to the actual flight time in the second example.
b) You have flown (or driven) for 11 minutes and 20 seconds, then recharged your 2200mAh LiPo, when finished your charger states that 1720mAh was returned to the battery. This app will then calculate:
- that the average current draw for the flight was 9.11 amps,
- the discharge rate was 4.1C,
- you used 78% of the rated capacity of the battery and
- to use 80% of the battery's capacity you could've safely flown for 11 minutes 35 seconds.
Comments & suggestions very welcome, please email if you have problems as we can not respond to Google Play Store comments.
Disclaimer: The formulas used in these calculations come from various internet sources, with some variations added from my own experience and while a lot of effort was put into ensuring accuracy, your results may vary!
Built with App Inventor.
Based on the CalcRC www.calcrc.com.
Includes calculation of the maximum speed, oil viscosity conversion, battery charging time calculation, conversion values servos and finally calculate the size of the gears.
View the version history, and added models, tires, engines and chargers
1. By using a yardstick.
2. By using the mobile camera.
3. By using the mobile sensors.
Process for 1. and 2.: You have to scale and type the rotor blade length (hole to end). Both blades has to show in the same direction. If you have 0 degrees pitch the blades have to be exact parallel. If you change pitch, the blades are moving apart. By using the gap between the blades you have the pitch value.
Process for 2.: By using the mobile camera it is enough to type a nearby blade length in the programpart 'calculate pitch'. After selecting the camera icon, you have to make a photo from your blades of the helicopter (like the title picture). Then you have to move the lines upon the blades. The ends of the blades are less important. Important is, that the lines are upon the blades (parallel).
Process for 3.: You can fix you mobile at a blade by using an elastic strap and read the pitch from the display.
-Bugfix: pitch with sensor (for some devices)
- Bugfix: If no camera app is available.
V 2.6.10 / 2.6.11
+ Pitch with Sensor: Movement now a bit smoother. I have changed the method of painting the view. Maybe it has fixed the Samsung Galaxy 2 bug. If the problem is still existing, please send me an email to firstname.lastname@example.org with a short description. Then i can give you test versions.
+ Look is now android version independent.
+ Pitch with Sensor: now you can change the sensor orientation by using the menu. It is useful for some mobiles, because of different orientations. (Thanks to Volker)
V 2.6.7 / 2.6.8
+ Graphic improvements (Pitch with sensors / number wheel)
- Bugfix: OutOfMemory in Pitch with sensor
- Bugfix: crash program, if an old value has not a valid value. (Thanks for report.)
+ Graphic improvements (Pitch with sensos)
+ Input of numbers now with number wheel.
+ move to SD card (with Android 2.2)
+ Now with min and max in 'Pitch with sensor'. Min and Max are applied, if the pitch value is 2sec fix and greater then +/- 2°.
+ Pitch is not bouncing this hard any more .
A review is available here:
Just add your RC models with a suitable image. After that add the associated spare parts including picture, item number, barcode and inventory deposit.
And that's it. From now on it is so easy to check which spare parts you have in stock.
- Manage spare parts
- Manage RC Models
- Change inventory
- View orders
- Scan spare parts via barcode scanner to find them quickly
- Backup and restore (via Dropbox or other Clouds)
- Quick search spare parts by barcode and custom QR Code.
- Create custom QR Codes for each spare part (premium only).
- Possibility to hide adds (premium only).
- Share spare parts between RC Models (premium only).
Feel free to contact me via email with suggestions or error reports!
Tags: RC Manager, RC Log, modelmaking, model-making, battery, flight, heli, helicopter, car, ship spare part, parts
This app is for 1/10 R/C car.
- Final gear ratio
- Motor RPM
- Potential Speed
Enter the transmission ratio, spur, and pinion to generate Final gear ratio.
Enter tire diameter, motor KV and battery voltage to get potential speed and max motor RPM.
Important gear parameters are revolutions per minute per volt (Kv), the engine voltage and the ESC value in percent.
The gear is defined with cog wheel positions at the shaft and the cogs from the cog wheel.
The program has presets for the helicopter: AcrobatSE, Align T-Rex 250SE/450/500/700, Compass Atom 6hv/7hv, EXI 250, GAUI Hurricane 425, GAUI X5, Herobo Embla 450E, MSH Protos, Outrage fusion 50, SAB Goblin 700, Henseleit TDR, Nova7.0
How to use:
- short touch activates / deaktivates the gear wheel
- touch and move changes the cog count
- long touch (1sec) without move changes the gear wheel in a gear belt
- Change it by touching the name or rpm.
+ Now you can use 4 or 7 shafts.
+ new presets: Henseleit TDR, Nova 7.0
+ small changes for android4
+ new presets: Herobo Embla 450E, SAB Goblin 700, EXI 250
+ new presetss: Align T-Rex 700, Outrage fusion 50, Compass Atom 6hv/7hv
+ Look is now android version independent.
+ Menu with icons
- Bugfix in email presets.
+ Shows ratio for pinion to mainshaft and tail to mainshaft (xx:1)
+ save with question and only if you made changes
+ presets now with prefix '~'
+ now you can't modify presets. Changes are stored with no prefix.
+ cogs from wheel can selected a bit better
+ new presets: GAUI X5, MSH Protos
+ Gear parameter revolution per minute per volt has now 5 digits
+ Graphic improvements (number wheel)
+ Menu Help (show the text 'How to use')
- Bugfix: Units
+ new Presets: AcrobatSE , T-Rex 250SE, T-Rex 500 (thanks to Andreas und Rene)
+ Added gear belt to bridge a shaft. (nice idea from Andreas)
+ Added shaft typ name.
+ move to SD card (with Android 2.2)
- Bugfix: after changing engine parameter all values are recalculated
- Bugfix: Values greater than 999999 RPM will be visible as >999999 and don't destroy the layout.
- small patches
+ cogs from wheel can now selected precisely (Thanks for comment from Brian and MarkD)
+ Presets for: Hurrican 425, T-Rex 450 (Thanks for good idea from Brian)
+ In the menu you can select 'email presets' to send me your presets. So i can add them to the next version. By using the menu item, you email client opens with all preset values. You can remove rows you don't want to send. (Help me to generate a good preset list.)
+ Added toast for load and save.
- Bugfix: Load now recalculates all values correct.
- now with function load, save and delete
- Bugfix: small display resolution (HTC Wildfire)
- Number input now nicer
Smart IR Remote is the only IR remote universal app for Android that you'll ever need: it's smart, with a device coverage that is huge (800000 devices, with more added daily and on request), and it's the only one that makes use of features only your phone/tablet have, that a plastic remote (like the Logitech Harmony) never will. As IR remote controls go, especially android remote controls, you'll never find one better!
Not compatible with Huawei, Xiaomi or Sony phones. Of all phones/tablets by LG, only compatible with the G3 (still in Beta, sending only, not recording. Not compatible with LG G3 A or LG G3 S)
Don't have a supported phone or tablet? Check out AnyMote Home: http://colortiger.com/home
Smart Remote works with any Samsung, HTC and Medion Lifetab devices with an InfraRed Blaster, and most other brand phone/tablet with an IR Blaster that runs Android 4.4 or above provided originally by the manufacturer. Even better, Smart IR Remote also works on most custom ROMs like CyanogenMod.
Smart IR Remote is an universal smart remote control that can command almost anything that receives InfraRed commands, like a TV, Set Top Box (cable and satellite box), DVD, BluRay player, VCR, Amplifier, Air Conditioner, AV Receiver, DSLR camera, etc. Better yet, you can combine your remotes into smart remotes (activities) so that on your custom remote you'll have the volume buttons to your surround system, the channel buttons to control your set top box and the display buttons to control your TV. It's the only Android universal tv remote that can do that, while controlling any other device too!
Do you want to help translate our app? Visit https://crowdin.net/project/smart-ir-remote
Have any questions? Visit our FAQ: http://colortiger.com/faq.php
If your remote is missing, please email us and we'll do our best to help!
On top of all that, since you're holding a phone, why not use some of its unique features?
AIR GESTURES - exclusive to Android 4.1-4.4 Galaxy S4
Simply wave your hand above your phone to change channels, volume, or whatever your heart pleases - it's all configurable!
MUTE/PAUSE ON PHONE CALL
Smart Remote can now mute your TV, pause your media player, or even switch them off if you wish, all of that when your phone rings.
Group commands in batches, sort them and add delays, and then execute the series of commands one after the other. Imagine being able to turn your TV, Xbox and surround system on, switch TV to HDMI 1 all with a single tap!
Automatically execute commands or macros when certain conditions occur: your phone rings, at a time chosen by you, when you use your phone's Volume Buttons. Are you a Tasker fan? We have a Tasker plugin that lets you to send commands
With both lockscreen and homescreen widgets, you'll have your favorite just a tap away when you grab your phone. Need something even better? read on
FLOATING REMOTE (CHATHEAD)
The floating remote is a remote that stays above other apps which can be shown with just a single tap and lets you send commands even while you're playing a game on your phone
BACKUP / RESTORE
If you switch ROMs often or need the remotes you put hard work on to be available on all your devices, you can simply make a backup once and then restore on all your other devices
RECORD REMOTES - exclusive to the HTC One due to hardware limitations in other devices
Couldn't find your remote in our list? Simply record each button to have it just the way you want it. Opt in to share your remote so that other customers can make use of your work too!
Almost all brands in the world are supported, including Samsung, Sony, Toshiba, Panasonic, Yamaha, DirecTV (Direct TV), etc.
For details about needed permissions, visit http://www.colortiger.com/#permissions on your computer.
***This App is designed to be used in conjunction with the Heli Replay from Air Hogs as well as the AppCopter from Appfinity. Follow the link to find out more: http://www.airhogs.com/en/products***
Fly, record, and play back your flight path with the all-new Heli Replay! With 3 ways to fly, you control the aerial action. Download the free app and start flying straight from your iPhone, iPod touch, or iPad. Use onscreen controls to fly the Replay, or activate the gyroscope and tilt your phone in the direction you want to fly! The helicopter’s onboard electronic stabilizing system automatically prevents unstable movement, resulting in an exceptionally smooth and precise flight experience. Use the Replay feature to record an in-air stunt – hit play and the helicopter will perform the same stunt again and again all on its own. Record up to three different stunts or flights.
***This App is designed and engineered to be used in conjunction with the Heli Replay from Air Hogs. Follow the link to find out more: http://www.airhogs.com/en/products***
Für Anfänger und Fortgeschrittene. Diese App hilft bei der Wahl des ersten Helis, bei der Einstellung, den ersten Flügen und in weiterer Folge beim Erlernen einfacher und komplexer Kunstflugfiguren.
Mit den integrierten Tools können Sie ihre ideale Gaskurve ausrechnen lassen, den Pitch Ihres Hubschraubers messen und verfügen über ein umfangreiches Glossar mit allen Begriffen aus dem Reich des Modellhelikopters.
Sie können mich jederzeit aus der App heraus kontaktieren, sollte irgend etwas unklar sein - ich helfe immer gerne!
RC Helikopter, Modellhubschrauber, Modellhelikopter, RC Hubschrauber, Handbuch, Guide, Pitch, Drehzahl, Kunstflug, 3D, Anfänger, RC Plane, RC helicopter, heli, hubi, Spektrum, Futaba, Align
I use these calculators often in my modeling and I find them handy for making educated guesses at the least. More calculators and features are in development. I have many more needs and now that I have the basic application and framework in place, I am creating new features as I need them. More free updates are coming.
The calculators and features in this release are:
• Unit Converter
• Wing Area
• Wing Loading
• Pitch Speed
• Engine Size
• Tank Size
• Gas / Oil Mix
• Propeller Chart
• Drill Size Charts
• Battery Voltage
Use onscreen wheels to adjust spur and pinion gear sizes to view final drive ratio. Use the onscreen wheel to adjust tire diameter to view rollout.
Save an unlimited number of car profiles for different models and setups.
Free version is fully functional!
RC Heli Logger makes flight and maintenance logging as easy as it gets. Choose your models from our list of over 50 pre-listed kits, or create your own. Logging a flight requires just a few taps, but where this app really shines is when logging maintenance. Our database breaks each model down to discrete part numbers so that you can keep track of exactly what broke and when you replaced it. You’ll never again have to guess which ball links might need preventative maintenance, or which thrust bearing broke on that last flight. It’s all right at your fingertips.
Best of all, all flight and maintenance stats are tracked across the user-base to provide the most comprehensive information about longevity of parts. You’ll receive notifications when any one of your parts is reaching it’s expected lifetime so that you can replace it before it’s likely to fail.
When our users log maintenance on their helicopters, we keep track of how long the part has lasted. Then for every individual part we average together its longevity, thus getting a baseline on how long the part will last in a helicopter. Even though you don't interact with people directly, the more users that use the website, the more accurate the data will be.
Coming with a full money back guarantee. Try this first no other app has a higher precission or supports more motors and configurations up to 60.000rpm!:
electric RC-Helis and Planes with 2-5 blades
all Nitro Planes including Gears and Helicopters
all 2 or 4 Stroke Motors with any number of cylinders including normal Car Motors
full Frequency Analytics.
You will get a timeline over the measured rpm and a full rpm Distribution in the end of the measurement.
If you are not happy with this app. Please write me an email and you will get a full refund!