Hi again Jostein, after updating the software and firmware, i have no RPM. i had to uninstall everything and install previous version again... checked everything after having dyno working again and compared the two configs and everything is configured the same way...

I cant calibrade Gear Ration and i cant dyno any car because RPM is always dead...

Hi Jostei, everytime i update i have to go through the print layout configuration again. is there any simpler way?

Hi Jostein, thanks for info! yes, RPM sweep Works good , just for testing on my dyno only. What i'd like is the Sync option , not sure if the same sync option can be added too to RPM sweep.

Ok, good.

A few things to think about with Brake sweep.

1. If your system works fine with RPM sweep, no need to switch to Brake sweep
2. With Brake sweep, start off at an RPM where the brake percentage is quite high. For water brakes and hydraulic brakes, this is good since they brake less at lower RPM, so they will start off high. For eddy brakes, if you start off at an RPM where the engine is very weak, the engine will accelerate very fast at its max power
3. Lower percentage sweep rate = longer runs. If your engine ramps up too quickly, reduce the ramp rate. The percentage gives the rate with which the brake is reduced per second
4. You must turn on compensation for moment of inertia for your brake, since unlike an RPM sweep, the time a sweep takes will vary with engine power, so the power it takes accelerate the brake must be compensated for to be able to compare runs. This option should in any case be turned on, but it is more important than for RPM sweeps where the same RPM curve is followed every run.
5. Brake turns off when it reaches the Max RPM setting

Restart PC, tried 2 times , and the last one Works. 

I have to make more test with Sweep brakes. sounds very good for my dyno but the one i tested didnt work properly, maybe i have to add more percentage in Sweep rate?

Strange, it works here. I recompiled and uploaded again, can you try again? 

Anybody else getting this error?

Hi Jostein, tried to update and get this error , tried many times and same error.

Greetings tuners!

Software version 3.01.67 was released today. It brings the following:

• New brake control mode! In addition to Manual mode and RPM Sweep, there is now a Brake sweep mode. This mode simulates the effect of driving up a steep hill that gradually flattens out. This mode is well suited for setups with slow brake control or engines with very abrupt torque curve, or in general for setups where the optimum PID parameter setting is difficult to find (oscillations). There is more explanation in the software itself.
• Better documentation on the brake setups and parameters inside the software
• Improved Autostart. Support for testing from high to low RPM using Autostart. 
• Easier AUX input programming. You can now input two voltages and two corresponding sensor values instead of just 0V and 5V values
• Support for very high number of pulses per revolution, typically from an encoder. The new firmware, version 1.16, is necessary for this. Just press the Firmware upgrade button and it downloads the code automatically. This is the only change in the new firmware.
• Fixed a bug where the RPM was slightly off when using two brakes and compensation for inertia effects in the brake was on

Enjoy!

Cheers,
Jostein

Greetings, tuners!

Software 3.01.65 was released today.

Changes:

• Enable PID parameters scaling vs RPM. Some brakes, in particular water brakes are more sensitive to control inputs at high RPMs, and therefore need lower PID parameters at high RPM than at low RPM
• Better RPM noise filtering. The default allowable RPM changes from sample to sample is reduced, plus it is now possible for the user to enter the threshold. 
• Added shortcut "v" to turn on and off the visible curve window.
• Added the possibility to enter really small numbers for Pd. Pd is very sensitive and for many applications it is recommended to keep at 0. But now you can experiment with very low numbers, for example 50 times less than Ki or Kp. Note that too high Pd can make the system unstable, so experiment with care. 

Enjoy!

Jostein

Hi, 

It may all be related to the connection being unstable. Try this: 

http://yourdyno.com/community/questions-and-answers-questions-and-answers/connection-dropout/

still having major software issues computer drops connection to dyno box at random , does not open program at random, and when using auto start and finish get error code when closing , when selecting save and restart computer locks and goes black have to restart entire system , thought it was a computer issue so i bought a new one core i7 , still the same problems ,   running windows 10 kinda frustrated

Greetings tuners,

Software version 3.01.63 is released. It brings the following:

• Support for stepper motors with CW/CCW mode, previously only CNT/DIR was supported. The new firmware 1.15 is needed for this option. Just press "Upgrade to latest firmware". 
• Improved usability when doing runs with calculated losses from retardation data. Now all Aux and Thermocouple data are removed in the retardation phase. Previously the data was shown also for the retardation phase, which is not interesting plus makes the graphs difficult to read. You can still see all data in the Aux and Thermocouple vs time.
• Fixed a bug in the print page margin settings when using Metric units.
• A very minor cleanup on the display of the progress bar in the firmware download when download is finished.

Enjoy!

Cheers,
Jostein

Hi,

YourDyno v3.01.62 is now released. Changes:

• Fixed a bug when you did a "Clear all runs" and then did more runs and saved them, the old runs were also saved
• Fixed a bug where the Max torque was wrongly shown in the table when unit is Imperial. There was also a bug in Wheel torque when saving/opening that was corrected for Imperial units
• Allowed negative Horsepower correction values
• A couple of other cleanups

Thanks for the inputs, enjoy!

Cheers,

Jostein

I will look into this!

the torque scale has a bug also when displayed in imperial units it does not read correct it follows hp scale but when using metric it follows the the correct  scale , I use imperial units  also screen is not centered when printing