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Re: ISL29125 RGB Light Sensor Not Working.

 by falingtrea ¦  Wed Sep 09, 2015 11:13 am ¦  Forum: SparkFun Product Questions ¦  Topic: ISL29125 RGB Light Sensor Not Working. ¦  Replies: 2 ¦  Views: 442

What type of level shifter are you using ? This? - or this? The first level shifter is designed specifically for I2C and would work better than the generic level shifter. Because I2C is bidirectional open collector, the ...

Re: Liquid pressure sensor?

 by falingtrea ¦  Tue Mar 24, 2015 11:14 am ¦  Forum: New Product Ideas ¦  Topic: Liquid pressure sensor? ¦  Replies: 7 ¦  Views: 3755

Re: SparkFun Energy Harvester Breakout - LTC3588

 by falingtrea ¦  Mon Jan 05, 2015 12:36 pm ¦  Forum: SparkFun Product Questions ¦  Topic: SparkFun Energy Harvester Breakout - LTC3588 ¦  Replies: 14 ¦  Views: 2984

Measure the voltage on VIn when you have the signal generator connected and running. You should see a DC voltage there. If not, then your signal generator is not on or the output voltage is not high enough. Also the input diodes are rated at 50 mA, so make sure your signal generator is not overdrivi...

Re: Variable velocity solenoid

 by falingtrea ¦  Tue Jul 22, 2014 11:01 am ¦  Forum: Projects ¦  Topic: Variable velocity solenoid ¦  Replies: 3 ¦  Views: 880

PWM implies that you are sending a pulse of a certain duration over a repeated cycle time. That is why you see a vibrational action. Try just sending a single pulse, and increasing the duration to get a harder strike. Otherwise you may need to use a DAC to send generate an analog voltage. You would ...

Re: Vacuum pump

 by falingtrea ¦  Thu Jun 19, 2014 11:02 am ¦  Forum: SparkFun Product Questions ¦  Topic: Vacuum pump ¦  Replies: 14 ¦  Views: 1724

The data sheet specs both vacuum and pressure. Looks like it has two ports and shows a airflow direction, so I would say yes it can do both.

Re: MMA8452 Accelerometer question

 by falingtrea ¦  Wed May 28, 2014 2:46 pm ¦  Forum: SparkFun Product Questions ¦  Topic: MMA8452 Accelerometer question ¦  Replies: 8 ¦  Views: 1207

You might try turning on the pulse LFP filter bit and taking a rolling sample of the data. That may smooth it out enough.

Re: Best start up ARM based product?

 by falingtrea ¦  Wed May 28, 2014 2:32 pm ¦  Forum: Everything ARM and LPC ¦  Topic: Best start up ARM based product? ¦  Replies: 10 ¦  Views: 4238

I would suggest looking at ARM's site. Many of the dev boards on this site use the Arduino Shield as a peripheral interface so it is pretty easy to put something together. The dev boards are pretty low cost also. They also supply a on-line compiler and libraries for many boards.

Re: Xbee direct input without arduino

 by falingtrea ¦  Wed Apr 09, 2014 11:19 am ¦  Forum: Wireless/RF ¦  Topic: Xbee direct input without arduino ¦  Replies: 1 ¦  Views: 640

This forum topic may have some useful links for what you want to do.

Re: Teensy capable of simulating a printer on Windows?

 by falingtrea ¦  Fri Feb 28, 2014 1:42 pm ¦  Forum: SparkFun Product Questions ¦  Topic: Teensy capable of simulating a printer on Windows? ¦  Replies: 4 ¦  Views: 602

Most modern printers have bidirectional interfaces, which would be much harder to emulate, since the printer driver would be expecting specific responses from the printer for ink level, paper jams, etc. Unfortunately in order to do that you would probably have to reverse engineer an existing printer...

Re: Copernicus II with chip antenna Antenova A10137

 by falingtrea ¦  Tue Feb 18, 2014 12:06 pm ¦  Forum: GPS ¦  Topic: Copernicus II with chip antenna Antenova A10137 ¦  Replies: 5 ¦  Views: 2817

Did you follow the design recommendations in this document? ... 0a69a200c9
Chip antennas are very sensitive to placement and routing.

Re: WiFly shield (RN-131G) half-dead after upgrade to 400 fw

 by falingtrea ¦  Tue Jan 07, 2014 12:43 pm ¦  Forum: Wireless/RF ¦  Topic: WiFly shield (RN-131G) half-dead after upgrade to 400 fw? ¦  Replies: 5 ¦  Views: 975

The default escape sequence is $$$ I believe. At least that is what I am using on my ver 4.00 unit.

Re: RN-XV firmware? Where?

 by falingtrea ¦  Fri Jan 03, 2014 12:42 pm ¦  Forum: Wireless/RF ¦  Topic: RN-XV firmware? Where? ¦  Replies: 7 ¦  Views: 1035

Hey folks. I have two RN-XV with the u.fl antenna and the 2.32 firmware. They're working ok, but would like to update to the 2.38 firmware. Where do i get it from? Roving Networks got bought by Microchip, and their site is infuriating. I have found this page that shows the firmware versions (https:...

Re: Help I killed a router!

 by falingtrea ¦  Wed Nov 20, 2013 3:57 pm ¦  Forum: Wireless/RF ¦  Topic: Help I killed a router! ¦  Replies: 10 ¦  Views: 1018

First of all the 7805 is not a transistor so your nomenclature is wrong. It has an in pin an out pin and a common pin and the tab is also common. Second, USB is 5V not 6V so running the USB memory stick at 6V may be the reason for why you blew up the router. If you are worried about sourcing power o...

Re: 9DOF Sensor Stick

 by falingtrea ¦  Wed Oct 30, 2013 11:38 am ¦  Forum: Arduino ¦  Topic: 9DOF Sensor Stick ¦  Replies: 3 ¦  Views: 662

Re: How to have an appliance turn on only when I'm home?

 by falingtrea ¦  Fri Oct 11, 2013 11:19 am ¦  Forum: Projects ¦  Topic: How to have an appliance turn on only when I'm home? ¦  Replies: 3 ¦  Views: 703

If you have an Android or IOs phone, you could write an app to do that. Maybe even send a message to Google Voice to start and stop forwarding. Another option is to use a RF-ID tag. Sparkfun just did a tutorial on RF-ID in the blog section.

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