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Search: Posts Made By: kufman
Showing results 1 to 25 of 500
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Forum: Radio and Electronics
Today, 03:57 PM
Replies: 163
Views: 34,078
Posted By kufman

That was going to be my next choice since my...

That was going to be my next choice since my cousin also has a CNC router. If he can't do it, I will get in touch with you. Thanks for the offer. Here is the original design
...
Forum: Radio and Electronics
Today, 02:14 PM
Replies: 163
Views: 34,078
Posted By kufman

1

1
Forum: Radio and Electronics
Yesterday, 06:00 PM
Replies: 163
Views: 34,078
Posted By kufman

I did this as a test early on but I want to test...

I did this as a test early on but I want to test brushed motors as well so I changed the design. I thought it would be easier for my to manufacture an optical wheel. That was before I realized that...
Forum: Radio and Electronics
Yesterday, 05:52 PM
Replies: 163
Views: 34,078
Posted By kufman

The original wheel is 36mm in diameter. The...

The original wheel is 36mm in diameter. The larger test was 96mm. The windows in the wheel are 5mmx5mm. PETG is also transparent to IR. I haven't heard of PA6-GF till your post. Looks interesting...
Forum: Radio and Electronics
04-23-2024, 08:16 AM
Replies: 163
Views: 34,078
Posted By kufman

Currently 4. I have experimented with 1, 2 and 4...

Currently 4. I have experimented with 1, 2 and 4 pickups. The main problem with my pickup is that PLA doesn't block IR light so I have to cover the disk with electrical tape. I then cut out the...
Forum: Radio and Electronics
04-22-2024, 12:47 PM
Replies: 163
Views: 34,078
Posted By kufman

Ok, short update. I fixed the new way of sending...

Ok, short update. I fixed the new way of sending the serial data. I was missing a value and the SD software didn't know what to do. With that working and the new "delay" setup, I can get data...
Forum: Radio and Electronics
04-21-2024, 07:39 PM
Replies: 163
Views: 34,078
Posted By kufman

Ok, tried a couple things tonight. 1. Tried...

Ok, tried a couple things tonight.

1. Tried sending the serial data as a bunch of Serial.Print lines. Unfortunately, there must be something in the SimpleDyno software that doesn't work with...
Forum: Radio and Electronics
04-20-2024, 05:10 PM
Replies: 163
Views: 34,078
Posted By kufman

Ya, I knew the stock code probably wasn't great...

Ya, I knew the stock code probably wasn't great but it was provided with the Simple Dyno software. I have written others for use with my Octave script. I tried PDR's code and it works well. I also...
Forum: Radio and Electronics
04-19-2024, 09:16 AM
Replies: 140
Views: 19,835
Posted By kufman

Some ESC's have a minimum throttle setting that...

Some ESC's have a minimum throttle setting that can cause that feeling. Or you could be running in sensorless mode due to a bad sensor cable or something.
Forum: Radio and Electronics
04-17-2024, 09:53 AM
Replies: 140
Views: 19,835
Posted By kufman

Just be aware that some motors will max out below...

Just be aware that some motors will max out below 45 degrees. I have a couple older 17.5s (novak and eco power) that produce max power around 37 or 38 degrees of timing. The easiest way to know if...
Forum: Radio and Electronics
04-16-2024, 08:32 AM
Replies: 163
Views: 34,078
Posted By kufman

Yes, I can watch the data flow just fine using...

Yes, I can watch the data flow just fine using serial monitor. The SimpleDyno software has always been a little weird with the serial port even on with the Nano. Usually have to hit connect twice...
Forum: Electric Off-Road
04-16-2024, 06:51 AM
Replies: 1,649
Views: 353,962
Posted By kufman

Sauce can be a double edged sword. It helps to a...

Sauce can be a double edged sword. It helps to a point but it can be disastrous. Things to try on an on-road car. Only sauce the inner half or 1/3 of the front tires. Super glue the front...
Forum: Radio and Electronics
04-15-2024, 07:18 PM
Replies: 163
Views: 34,078
Posted By kufman

I was hoping to avoid making my own board. I...

I was hoping to avoid making my own board. I bought some protoboards that plug right into the top of the Minima which will provide enough space for me to put an opamp or two and some filtering. The...
Forum: Radio and Electronics
04-15-2024, 11:59 AM
Replies: 163
Views: 34,078
Posted By kufman

I am currently measuring the voltage right at the...

I am currently measuring the voltage right at the connector to the ESC since it is also my current measurement board. This way, I don't have to move it with each new ESC I use. It is true that I...
Forum: Electric Off-Road
04-15-2024, 11:49 AM
Replies: 1,649
Views: 353,962
Posted By kufman

Yes, it appears that the more sauce that is used,...

Yes, it appears that the more sauce that is used, the faster the carpet goes to crap.
Forum: Electric Off-Road
04-15-2024, 09:51 AM
Replies: 1,649
Views: 353,962
Posted By kufman

I think that is largely dependent on age and...

I think that is largely dependent on age and upkeep. The fuzz has to be vacuumed or traction will suffer. As black carpet ages, the grip falls off rapidly.
Forum: Radio and Electronics
04-14-2024, 06:39 PM
Replies: 163
Views: 34,078
Posted By kufman

Sounds like a plan. I have dumped the whole run...

Sounds like a plan. I have dumped the whole run to a bigger before and it works well. What micro do you recommend? I just bought a Minima id that is useful.
Forum: Radio and Electronics
04-14-2024, 05:56 PM
Replies: 163
Views: 34,078
Posted By kufman

What do you have in mind?

What do you have in mind?
Forum: Radio and Electronics
04-14-2024, 10:08 AM
Replies: 163
Views: 34,078
Posted By kufman

So construct a little loop using millis() to...

So construct a little loop using millis() to create the delay? Or us the modulo operator and every time it is 0, rerun the main loop?
Forum: Radio and Electronics
04-13-2024, 08:25 AM
Replies: 163
Views: 34,078
Posted By kufman

By the way, here is the sketch for the Arduino. ...

By the way, here is the sketch for the Arduino.
//
//
/*
Sketch for use with SimpleDyno
Developed on Arduino Uno Platform
DamoRC - 2013-2014

ALWAYS use the Sketch distributed with...
Forum: Radio and Electronics
04-13-2024, 08:16 AM
Replies: 163
Views: 34,078
Posted By kufman

Here are the resulting power and torque plots. ...

Here are the resulting power and torque plots. Notice the flat sections on the 1 hole plot. ...
Forum: Radio and Electronics
04-13-2024, 08:14 AM
Replies: 163
Views: 34,078
Posted By kufman

I did a bit more testing on the number of pickups...

I did a bit more testing on the number of pickups for the RPM measurement. I think the noise comes from two things. 1-The holes in the disk are not perfectly 90 degrees apart. 2-The jitter in the...
Forum: Radio and Electronics
04-12-2024, 06:10 AM
Replies: 163
Views: 34,078
Posted By kufman

Up above I showed RPM data when it is dumped into...

Up above I showed RPM data when it is dumped into an array. Here is what it looks like when captured by the Simple Dyno sketch. The curve fitting takes care of the mess but it could be better....
Forum: Radio and Electronics
04-11-2024, 05:20 PM
Replies: 163
Views: 34,078
Posted By kufman

Not yet but they aren't that expensive. ...

Not yet but they aren't that expensive.



Sounds pretty cool and it might work for a dyno setup but the RPM needs to have a bunch of points in the first few rotations. That is why I am trying...
Forum: Radio and Electronics
04-11-2024, 02:22 PM
Replies: 163
Views: 34,078
Posted By kufman

Yes, the curve I posted is a good curve but it...

Yes, the curve I posted is a good curve but it isn't the way the SimpleDyno software measures it. Also, it is a fairly short set of data due to the limited ram. Since I only use the Arduino IDE...
Showing results 1 to 25 of 500
 
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