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Search: Posts Made By: PDR
Showing results 1 to 25 of 500
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Forum: Radio and Electronics
04-23-2024, 03:56 PM
Replies: 163
Views: 34,168
Posted By PDR

Have you thought about using a hall effect sensor...

Have you thought about using a hall effect sensor instead of the optical one? It's also possible to tap into the motor's own sensors. You'd get three samples per revolution.
Forum: Radio and Electronics
04-22-2024, 06:15 PM
Replies: 163
Views: 34,168
Posted By PDR

How many samples per revolution are you picking...

How many samples per revolution are you picking up?
Forum: Radio and Electronics
04-14-2024, 07:40 PM
Replies: 163
Views: 34,168
Posted By PDR

The Minima will be quite capable. The...

The Minima will be quite capable. The microcontroller in that has hardware support for period measurement, but I don't have experience with it. Using it would require some non-portable code (which is...
Forum: Radio and Electronics
04-14-2024, 06:06 PM
Replies: 163
Views: 34,168
Posted By PDR

Switch to a more modern microcontroller with...

Switch to a more modern microcontroller with better ADC and hardware-based timing (the micros() function with interrupts will give you less precise results). Maybe buffer data for a whole run and...
Forum: Radio and Electronics
04-14-2024, 04:28 PM
Replies: 163
Views: 34,168
Posted By PDR

Something like this. Define a value that...

Something like this. Define a value that determines time between updates and then check each loop if that time has expired.

const int NumPortsToRead = 6;
int AnalogResult[NumPortsToRead];...
Forum: Radio and Electronics
04-11-2024, 05:55 PM
Replies: 163
Views: 34,168
Posted By PDR

The current design captures only one sensor from...

The current design captures only one sensor from the motor (ie: one revolution), but could be extended to look at all three. It would work by measuring time between pulses and can be accurate down to...
Forum: Radio and Electronics
04-11-2024, 04:55 PM
Replies: 163
Views: 34,168
Posted By PDR

I'm happy to contribute what I can to this. For...

I'm happy to contribute what I can to this. For example, I've got a datalogging board that captures a bunch of stuff at 50Hz and writes it to a microSD card as it goes, so it can record practically...
Forum: Radio and Electronics
03-28-2024, 05:00 PM
Replies: 14
Views: 757
Posted By PDR

Short answer: yes. Not sure I've seen a...

Short answer: yes.

Not sure I've seen a 3-channel receiver with only 3 ports, but yeah a splitter will work fine. Just make sure to use a decent quality one and watch for it getting snagged or...
Forum: Radio and Electronics
03-24-2024, 04:43 PM
Replies: 130
Views: 66,033
Posted By PDR

Does sound weird. Have you tried re-binding the...

Does sound weird. Have you tried re-binding the receiver after setting everything to defaults?
Forum: Radio and Electronics
03-20-2024, 03:45 AM
Replies: 5
Views: 478
Posted By PDR

I sell a few other RC bits on Tindie, but this...

I sell a few other RC bits on Tindie, but this one hasn't hit the store yet. It's an evolution/expansion of existing products. I'd be happy to send one or more if interested. It's built around a...
Forum: Radio and Electronics
03-18-2024, 01:22 PM
Replies: 5
Views: 478
Posted By PDR

I built a module based on a small...

I built a module based on a small microcontroller. Has 2 PWM inputs (2 channels), 4 separate MOSFET-driven outputs and two WS2812 (or similar) outputs. I don't have a picture of the current version...
Forum: Radio and Electronics
03-17-2024, 02:17 AM
Replies: 143
Views: 20,074
Posted By PDR

Worst case you should be under 0.2W through the...

Worst case you should be under 0.2W through the regulator (unless I got that wrong). Hopefully that's within the limits...
Forum: Radio and Electronics
03-12-2024, 03:31 PM
Replies: 17
Views: 974
Posted By PDR

I'll take "interesting choices were made in...

I'll take "interesting choices were made in meeting for $100, please"
Forum: Radio and Electronics
03-07-2024, 08:02 PM
Replies: 113
Views: 10,394
Posted By PDR

Note that as opposed to a patent or trademark,...

Note that as opposed to a patent or trademark, copyright exists automatically (in most countries, but not all). No need to claim or register it. Regardless, trilerian has publicly expressed eagerness...
Forum: Radio and Electronics
03-07-2024, 07:42 PM
Replies: 38
Views: 1,584
Posted By PDR

You might well find that it dips well below that...

You might well find that it dips well below that under load, causing issues.
Forum: Radio and Electronics
03-07-2024, 06:40 PM
Replies: 38
Views: 1,584
Posted By PDR

Is it possible that the battery is not able to...

Is it possible that the battery is not able to provide the power needed? Or, there's some additional impedance (poor connection etc) in the way it's connected to the ESC? The symptoms you describe...
Forum: Electric On-Road
03-05-2024, 02:06 PM
Replies: 65
Views: 17,469
Posted By PDR

A pixelated pair of boobies ...

A pixelated pair of boobies
https://cimg9.ibsrv.net/gimg/www.rctech.net-vbulletin/800x530/pixelated_boobies_6adf06a811efbe917d003d781f79edf007ef2cc0.png
Forum: Radio and Electronics
02-25-2024, 05:41 PM
Replies: 16
Views: 1,130
Posted By PDR

Chances are it's a bug in the Arduino...

Chances are it's a bug in the Arduino core/version, so maybe check for updates on that front. From the quick scan of the R4 board, hardware PWM on pin 9 should be fine. I'd still test if it's better...
Forum: Radio and Electronics
02-25-2024, 01:53 AM
Replies: 16
Views: 1,130
Posted By PDR

I tried your code with my clone Uno with the...

I tried your code with my clone Uno with the output on pin 9 and it seems to behave as the code expects. The PWM output matches the intended value pretty much down to the microsecond. I have a little...
Forum: Radio and Electronics
02-23-2024, 07:00 PM
Replies: 16
Views: 1,130
Posted By PDR

For clarity, which Arduino board are you using?...

For clarity, which Arduino board are you using? And, do you have any other Arduino boards handy? I've got a clone Uno that refuses to work for specific scenarios, but is fine for others. Took me ages...
Forum: Radio and Electronics
02-23-2024, 06:53 PM
Replies: 20
Views: 1,571
Posted By PDR

There is a (not very widely adopted) class in...

There is a (not very widely adopted) class in Asia that is specifically catering for "time limit activation boost" (or something like that). Via an extra channel on the receiver, the ESC firmware...
Forum: Electric On-Road
02-23-2024, 06:13 PM
Replies: 65
Views: 17,469
Posted By PDR

Unless the colour of the anodizing is documented...

Unless the colour of the anodizing is documented by pantone code or spectrum in µm, you're just not serious, are you?
Forum: Team and Company Discussions
02-20-2024, 08:03 PM
Replies: 53
Views: 4,824
Posted By PDR

Did you gear taller or similar to the Zombie? My...

Did you gear taller or similar to the Zombie? My observations from local tracks has been the Zombie seems very rpm oriented, and other notes here suggest the V6 is more torquey.
Forum: Radio and Electronics
02-12-2024, 01:43 PM
Replies: 5
Views: 533
Posted By PDR

Hard to know for sure, but probably a MOSFET in...

Hard to know for sure, but probably a MOSFET in the ESC.

I'm assuming it's a brushed ESC? Does it have a recognised model? If it's a simple "forward-only" brushed ESC, there might be a single...
Forum: Radio and Electronics
02-11-2024, 07:39 PM
Replies: 5
Views: 533
Posted By PDR

You might be getting volts with no load, but none...

You might be getting volts with no load, but none once a load goes on it. Try measuring the voltage across the motor when it's connected to the ESC (assuming that's how it's normally used)....
Showing results 1 to 25 of 500
 
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