Search found 321 matches

by darrellg
Fri Aug 03, 2018 8:50 am
Forum: Projects
Topic: How to control a 230V DC motor
Replies: 3
Views: 81

Re: How to control a 230V DC motor

Your lack of knowledge of even the basics along with the high voltages required mean the only thing I can recommend is that you do NOT attempt this project.
by darrellg
Thu Jul 26, 2018 9:29 am
Forum: Projects
Topic: How to tell if my lipo has protection circuit?
Replies: 1
Views: 47

Re: How to tell if my lipo has protection circuit?

The little green PCB under the gold Kapton tape is the protection circuit.
by darrellg
Mon Jul 02, 2018 9:49 am
Forum: SparkFun Site Questions/Comments
Topic: Becoming a Digikey Supplier
Replies: 1
Views: 115

Re: Becoming a Digikey Supplier

I don't know why you'd be asking here instead of at Digikey, but if you go to https://www.digikey.com/en/help/contact-us you'll find a link labeled "New Supplier Inquiries" that leads to a form you can fill out.
by darrellg
Fri Jun 29, 2018 8:51 am
Forum: SparkFun Product Questions
Topic: Pi Servo Hat with RPi_Cam_Web_Interface
Replies: 5
Views: 150

Re: Pi Servo Hat with RPi_Cam_Web_Interface

if you want a response from Sparkfun, then you should probably use the actual Sparkfun support page at https://www.sparkfun.com/technical_assistance.
by darrellg
Wed Jun 27, 2018 9:32 am
Forum: SparkFun Product Questions
Topic: Picobuck LED driver current question
Replies: 2
Views: 119

Re: Picobuck LED driver current question

Connecting LEDs in series does not increase the current requirement. The current requirement for three LEDs in series is the same as one LED. It increases the voltage requirement, and 3 LEDs in series will drop 3 times the voltage as a single LED. This is a user forum. If you want support from Spark...
by darrellg
Fri Jun 22, 2018 10:40 am
Forum: Wireless/RF
Topic: Suggested Wireless Type/Platform For This "Robotics" Application?
Replies: 4
Views: 155

Re: Suggested Wireless Type/Platform For This "Robotics" Application?

The simplest is probably XBee. Once a module is configured, you just treat it like a serial port. The controller can transmit commands and all the pods will receive. As long as you put some type of "address" in the command, the pods will know if it should use or ignore the command. Here's a tutorial...
by darrellg
Fri Jun 22, 2018 9:57 am
Forum: Wireless/RF
Topic: Suggested Wireless Type/Platform For This "Robotics" Application?
Replies: 4
Views: 155

Re: Suggested Wireless Type/Platform For This "Robotics" Application?

XBee would suit this application, but wifi modules are stupidly cheap these days. Even a Raspberry Pi Zero W would work (and they're only $10). You have an abundance of choices. You just need to pick the one you are most comfortable with and make it work for you.
by darrellg
Mon Jun 18, 2018 10:09 am
Forum: Projects
Topic: Connect java/C program to Arduino
Replies: 1
Views: 104

Re: Connect java/C program to Arduino

Yes.
by darrellg
Mon Jun 11, 2018 9:37 am
Forum: SparkFun Site Questions/Comments
Topic: can't log into main site because recaptcha
Replies: 2
Views: 153

Re: can't log into main site because recaptcha

Every website on the Internet logs your IP and browser info.
by darrellg
Fri Jun 08, 2018 8:30 am
Forum: SparkFun Product Questions
Topic: Papa Soundie
Replies: 6
Views: 131

Re: Papa Soundie

You may have better luck contacting Sparkfun Technical Assistance at https://www.sparkfun.com/technical_assistance.
by darrellg
Thu Jun 07, 2018 2:20 pm
Forum: Arduino
Topic: Help me identify
Replies: 3
Views: 158

Re: Help me identify

Almost certainly a WS2812b, or a clone thereof.
by darrellg
Thu Jun 07, 2018 11:14 am
Forum: SparkFun Product Questions
Topic: Papa Soundie
Replies: 6
Views: 131

Re: Papa Soundie

Adafruit just posted a tutorial about that at https://learn.adafruit.com/microcontrol ... n?view=all. The DAC does ogg vorbis natively, so you might want to consider converting to that format as well.
by darrellg
Thu Jun 07, 2018 10:59 am
Forum: SparkFun Product Questions
Topic: Papa Soundie
Replies: 6
Views: 131

Re: Papa Soundie

Stereo vs. mono could be an issue as well. The best thing to do is to check the test files and match their format in your production files.
by darrellg
Thu Jun 07, 2018 10:45 am
Forum: SparkFun Product Questions
Topic: Papa Soundie
Replies: 6
Views: 131

Re: Papa Soundie

There are many ways to create a wav file. Be sure to note the requirements listed at https://learn.sparkfun.com/tutorials/papa-soundie-audio-player-hookup-guide Quick Note about using WAV : The VS1000 developer library contains a simple WAV decoder, which is included in the firmware on the Papa Soun...