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Re: Need a Small 5v Power Supply

 by lyndon ¦  Wed Jan 23, 2019 6:37 pm ¦  Forum: Projects ¦  Topic: Need a Small 5v Power Supply ¦  Replies: 3 ¦  Views: 172

LiPo?

Re: Ethernet UDP to serial display

 by lyndon ¦  Wed Jan 23, 2019 6:37 pm ¦  Forum: Projects ¦  Topic: Ethernet UDP to serial display ¦  Replies: 9 ¦  Views: 341

I meant that you'd have an Arduino between the Moxa and the display to control the formatting if necessary.
If you can alter the data anywhere along the chain, I'm sure that will provide the format needed.

Re: Ethernet UDP to serial display

 by lyndon ¦  Tue Jan 22, 2019 6:30 pm ¦  Forum: Projects ¦  Topic: Ethernet UDP to serial display ¦  Replies: 9 ¦  Views: 341

Can you program the Moxa? You may have to do some format conversion so the data displays how you like. If not, you can use an Arduino and a regular display and program the arduino to e.g., reposition to the start of screen on each update. Really cool would be to build it with those 6" displays so yo...

Re: Big easy driver fries when stepper mecanically stucks

 by lyndon ¦  Wed Dec 19, 2018 11:19 am ¦  Forum: SparkFun Product Questions ¦  Topic: Big easy driver fries when stepper mecanically stucks ¦  Replies: 2 ¦  Views: 165

My guess is that the driver is marginal for that size stepper and at speed, the current isn't high enough for long enough to cause a heating problem. But at idle with holding current on, it dissipates too much power

Re: Networking industrial devices

 by lyndon ¦  Wed Dec 12, 2018 9:49 pm ¦  Forum: Projects ¦  Topic: Networking industrial devices ¦  Replies: 1 ¦  Views: 140

An application like this typically uses an accelerometer to detect the vibration. Item #1 is to determine the G level of vibration you're looking for. From what I recall when doing research a few years ago, most motors that aren't falling apart will be under 5Gs. Honeywell should have something appr...

Re: Help with stepper motor position

 by lyndon ¦  Sat Dec 08, 2018 9:13 am ¦  Forum: Projects ¦  Topic: Help with stepper motor position ¦  Replies: 5 ¦  Views: 222

One important thing to bear in mind is do you need to know the position of the motor shaft, or the position of what it's driving?

Re: Parallel the TB6612FNG?

 by lyndon ¦  Fri Dec 07, 2018 2:59 pm ¦  Forum: SparkFun Product Questions ¦  Topic: Parallel the TB6612FNG? ¦  Replies: 9 ¦  Views: 377

It will probably work based on my memory of the chip. Googling reveals that few people have done it.

Re: thick&tiny PCB design?

 by lyndon ¦  Fri Dec 07, 2018 2:53 pm ¦  Forum: PCB Design Questions ¦  Topic: thick&tiny PCB design? ¦  Replies: 2 ¦  Views: 276

Actually, thinking more about it, I'd use a more "normal" PCB size with a right-angle light pipe to attach the fiber. I assume that standard fiber optic connectors would be too bulky?

Re: Help with stepper motor position

 by lyndon ¦  Fri Dec 07, 2018 9:22 am ¦  Forum: Projects ¦  Topic: Help with stepper motor position ¦  Replies: 5 ¦  Views: 222

The main benefit of microstepping is smoother motion, not more precise control. I wouldn't trust the accuracy below half step or so, depending on the particular motor you are using. If you need more precise motion, gear it down. For knowing startup position, yes you will need some sort of absolute p...

Re: Parallel the TB6612FNG?

 by lyndon ¦  Fri Dec 07, 2018 9:19 am ¦  Forum: SparkFun Product Questions ¦  Topic: Parallel the TB6612FNG? ¦  Replies: 9 ¦  Views: 377

Why do you want to parallel it? If you need more current, simpler to use something rated for that higher current.

Re: thick&tiny PCB design?

 by lyndon ¦  Thu Dec 06, 2018 6:31 am ¦  Forum: PCB Design Questions ¦  Topic: thick&tiny PCB design? ¦  Replies: 2 ¦  Views: 276

Why not order standard thickness PCB and put them back to back?

Re: Remote Arduino cabin monitor

 by lyndon ¦  Sat Dec 01, 2018 6:42 pm ¦  Forum: Projects ¦  Topic: Remote Arduino cabin monitor ¦  Replies: 4 ¦  Views: 229

Raspberry Pi is more appropriate.

Re: Permanent arduino connection

 by lyndon ¦  Thu Nov 29, 2018 5:48 pm ¦  Forum: Arduino ¦  Topic: Permanent arduino connection ¦  Replies: 2 ¦  Views: 124

Nothing wrong with the standard Arduino jumpers as long as the pin & socket is tight. I use them all the time since they are faster than making up custom wire harnesses. The key is to keep the pin & socket joint from being able to work loose. So bundle them together and zip tie the as you you would ...

Re: Sound Level Warning Device: Suggested shopping list

 by lyndon ¦  Mon Nov 26, 2018 6:44 pm ¦  Forum: Projects ¦  Topic: Sound Level Warning Device: Suggested shopping list ¦  Replies: 10 ¦  Views: 411

Asking for someone to code it for you isn't a dick move: there are entire industries built on this very concept of "exchange cash for X service." Sometimes you simply don't have the time to get something done. That said, I'd offer to do it for you, but I don't have the hardware and it simply wouldn'...

Re: HX711 && getUnits() steady state reading

 by lyndon ¦  Mon Nov 26, 2018 8:42 am ¦  Forum: Arduino ¦  Topic: HX711 && getUnits() steady state reading ¦  Replies: 5 ¦  Views: 151

I don't understand. Isn't the "current weight" exactly what you said you are looking for?

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