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On the product page, just below the price, you can select Documents
Here's the spec sheet on the Opto Coupler:
https://www.sparkfun.com/datasheets/Com ... ld205t.pdf

Re: VCNL4040 Interrupt

 by DanV ¦  Thu Apr 11, 2019 12:20 pm ¦  Forum: Distance, Range Finders & Infrared ¦  Topic: VCNL4040 Interrupt ¦  Replies: 16 ¦  Views: 310

Google "vcnl4040 application note".
Vishay has several

Re: Wild Thumper 6WD Chassis

 by DanV ¦  Wed Apr 10, 2019 6:23 am ¦  Forum: Direct Current(DC) Motors & Drivers ¦  Topic: Wild Thumper 6WD Chassis ¦  Replies: 2 ¦  Views: 79

Monster Moto Shield
From the product page description:

We have had success driving this platform with the SparkFun Monster Moto Shield, it can be found in the Recommended Products section below.

Why not try 19200 since it's not only double 9600 but double your 194 which puts you at 388Hz?

Re: Traffic light using millis() problem

 by DanV ¦  Thu Feb 28, 2019 3:05 pm ¦  Forum: Arduino ¦  Topic: Traffic light using millis() problem ¦  Replies: 2 ¦  Views: 99

Your intervals run completely concurrent - when you are examining for Led Start, you are also examining for Led Stop. You could add a Boolean for which state you are in now so as to determine which state you are timing out. Likely, when you are turning the LED on, you are also turning it OFF. You do...

Re: DEV-10618

 by DanV ¦  Sun Feb 10, 2019 8:54 am ¦  Forum: Power Management ¦  Topic: DEV-10618 ¦  Replies: 2 ¦  Views: 113

Google "control transistor with arduino". There is nothing magical about this shield - it's just a mosfet transistor on a board to provide control of device requiring higher voltage / current than the Arduino can provide. Coding requires nothing more than controlling an Arduino output. Also, on the ...

Re: USB to RS-485 Converter ~ Driver Issue

 by DanV ¦  Sat Feb 02, 2019 9:34 am ¦  Forum: Programmers ¦  Topic: USB to RS-485 Converter ~ Driver Issue ¦  Replies: 6 ¦  Views: 182

I am certainly out there but I would suggest you get in touch with SparkFun's tech support group.
I don't know how you cold tell if the chip is malfunctioning.
I also do not have an opinion as to the unsupported nature of blank VID / PID numbers.

Re: USB to RS-485 Converter ~ Driver Issue

 by DanV ¦  Thu Jan 31, 2019 10:19 am ¦  Forum: Programmers ¦  Topic: USB to RS-485 Converter ~ Driver Issue ¦  Replies: 6 ¦  Views: 182

Here's the drivers:
https://www.ftdichip.com/Drivers/VCP.htm
Pick the 64 bit for Windows.

Here's the installation guide:
https://www.ftdichip.com/Support/Docume ... Guides.htm

Re: Photoelectric sensor with Teach Mode?

 by DanV ¦  Sat Jan 19, 2019 8:15 am ¦  Forum: Arduino ¦  Topic: Photoelectric sensor with Teach Mode? ¦  Replies: 2 ¦  Views: 133

Or, if you use a pullup resistor on your input, NPN will work fine as well. Your choice.

Re: Daylight visible indicator LEDs - how bright is enough?

 by DanV ¦  Sat Jan 19, 2019 8:14 am ¦  Forum: Projects ¦  Topic: Daylight visible indicator LEDs - how bright is enough? ¦  Replies: 17 ¦  Views: 7660

Do your research on "lumen vs mcd"

Re: Photoelectric sensor with Teach Mode?

 by DanV ¦  Sat Jan 19, 2019 7:30 am ¦  Forum: Arduino ¦  Topic: Photoelectric sensor with Teach Mode? ¦  Replies: 2 ¦  Views: 133

In the datasheet: https://files.valinonline.com/userfiles/documents/panasonic-cx400-sensor.pdf the word "teach" is not found. Not sure why you would ask about it. But, generally, a photosensor teach mode requires you to place an object in the sensing area, push a button, then remove and press again....

Re: Sparkfun ESP32 Dev Board Uploading

 by DanV ¦  Thu Jan 17, 2019 9:28 am ¦  Forum: ESP System on a Chip(SOC) ¦  Topic: Sparkfun ESP32 Dev Board Uploading ¦  Replies: 4 ¦  Views: 162

Google is your friend:
"Failed to connect to ESP32: Timed out waiting for packet header"

Re: RGB yellow for APA102 led strips

 by DanV ¦  Wed Jan 16, 2019 3:11 pm ¦  Forum: Projects ¦  Topic: RGB yellow for APA102 led strips ¦  Replies: 5 ¦  Views: 176

try 244, 244, 66

Re: OpenScale - Load-cell vs strain-gauge

 by DanV ¦  Sat Dec 29, 2018 6:17 am ¦  Forum: SparkFun Product Questions ¦  Topic: OpenScale - Load-cell vs strain-gauge ¦  Replies: 2 ¦  Views: 92

Research provided many tutorials on this subject.
Pay attention to the terms load sensor (needs multiple units and a combinator) and load cell (1 unit - no combinator).
Ultimately, both configurations need an amplifier.

https://www.allaboutcircuits.com/textbo ... in-gauges/

Re: Break Away Headers - Straight

 by DanV ¦  Fri Dec 21, 2018 7:36 am ¦  Forum: Miscellaneous ¦  Topic: Break Away Headers - Straight ¦  Replies: 4 ¦  Views: 213

Adafruit has these: https://www.adafruit.com/product/400?gclid=EAIaIQobChMInY_y95Cx3wIVQZppCh1G5wb2EAQYASABEgIhRvD_BwE Pololu has these but they're a bit shorter: https://www.pololu.com/product/1065 I don't know what you mean by 11.5 on both sides - I've never seen headers with pins that long, but t...

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