Gsm Shield Spreadtrum 1.6 Download ((FREE))

Hi All.

I am new to working with Arduinos and prototyping and I am having difficulty with a project I have committed myself to. A bit of background: The project is intended to use my Arduino Uno with an GSM shield to triangulate location at frequent and repeating intervals. So far I have the hardware set up and working to a stage of two way communication between my computer and the shield. Upon activation I receive:

After doing some research I have established that this means I am not properly connected to the cell tower network (makes sense, since I cannot retrieve information about the network or connected cellids). My attempt at a resolution was to change the frequency on which the shield was recieving by commanding:

Gsm Shield Spreadtrum 1.6 Download

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I've been having exactly the same problem today. After unplugging the GSM module from the shield and plugging it back in several times it has mysteriously started working. So I'd check the connection between shield and module is clean.

Yea I tripple checked the connection but its a good thought and on the right track from my error. After a few more hours and an attempt with a SIM card from a different provider, I found that Virgin Mobile uses CDMA instead of GSM and therefore the SIM card is not recognized by the shield. The Rogers SIM card that I tired worked like a charm.

The shield is telling me that there's no SIM card inserted, but the card is there and properly placed.

This happens somewhat randomly when booting the Arduino UNO, and it's not related to the sketch that I'm uploading (because this happens frequently with any sketch).

With the new card, everything was okay for 20 minutes or so, and then it happens again.

I remove the SIM card from the shield and insert it on the phone again - phone doesn't boot, again.

After 30 minutes, the phone was able to boot but said there was no SIM card inserted.

Only after a couple of hours, the phone recognized the SIM card again.

And then I place it again in the shield, boot up, it's fine, then after some operations it suddenly says "+SIND: 0", reboot and continues to return "+SIND: 0", then reboot again a couple of times and all is working fine...

It would appear as if the shield is burning / destroying the SIM cards and resetting itself at the same time, but why?

SIM card VCC reads 1.81~1.83V, shield Vin reads 3.99V - which is not the "ideal" 3.6V but totally acceptable (datasheet says Vmin=3.3V, Vnom=3.6V, Vmax=4.2V).

You really should be using an adapter that will supply a minimum of 2 amps. Not saying that is what's causing your problems but if I were consistently blowing SIM cards on this shield I'd ask for a replacement!

Just a note to anyone who find this thread - the Sparkfun GSM shield with that Spreadtrum module can draw up to 1.42A in our experience in short bursts, so it is very prudent to use the 5V 2A power supply

have fun

The Spectrum Shield enables your Arduino with the capability of splitting a stereo audio input into 7-bands per channel. You can then read the amplitude of each channel using the ADC on your Arduino allowing you to control everything from LEDs to motors, pumps to relays, or even fire, all with sound. With this shield you will be able to have almost any project be able to react to music or sound!

The Spectrum Shield features the MSGEQ7 graphic equalizer display filter. Two of these ICs allow you to split a stereo audio input into 7-bands (per channel) and read the amplitude of each using the ADC on your Arduino. The shield is populated with two 1/8" stereo jacks (like you would find on a pair of headphones). One serves as a stereo input and the other is a pass-through output which allows you to connect the Spectrum Shield in-line between your audio source and your stereo system without interruption. This revision of the Spectrum Shield has been updated to the Arduino R3 layout but still requires you to solder on your own headers (check the Recommended Products section below). This shield can be used to create sound visualizers, detect patterns in music or add sound activation to your microcontroller projects.

There is a lot of coupling with the I/O and the audio input. If you turn on the LEDs in the example code for a certain length, you will hear this awful buzzing noise. It's worse when you leave the LEDs partially or fully on. One suggestion might be to use a wireless audio Bluetooth and send the audio signal remotely so that it is not affecting the output. Audiophiles will cringe at the buzzing... Maybe some decoupling capacitors might help with the audio signal if you are splitting or putting your signal through the shield..

I just noticed the same thing (reset on D5 and not D6). Is this change intentional? The posted schematic still has the reset on D6. On one hand this is concerning as it means that I have to change some code to make things work (and have to do some resodering). On the other hand this does mean that you can now use the spectrum shield with the Adafruit NeoPixel Shield ( ) for lots of blinky fun as it uses D6 as the control line for the NeoPixels.Final feedback is, let us customers know when a change is in the works and when that change has been made.

Hi, can I use this shield with an Arduino MEGA?I'm working on a project to connect a metal detector to an Arduino and analyse the amplitude/frequency of the input sound for automated metal detection on a robot.

For anyone looking for a place to start, I made a compact class for the shield (very bare bones, but it makes the application code look really nice). Copy the code below labelled "Header File" into a file called "Sparkfun_Spectrum_Shield.h" and the code labelled "CPP File" into a file called "Sparkfun_Spectrum_Shield.cpp" and put both of those into your Arduino project folder.Header File:

This shield puts the FUN in SparkFun! (Sorry)Wanted to share code for newbs like myself who found the examples didn't work quite like I was expecting. This code uses the same board / LED configuration as SF example, but produces more of a peak level meter.

Is there any reason why you chose pin 4 & 6? I dont see any real logic for this decision. Just asking because I am coding an MSGEQ7 Lib with examples. And those examples should work with the shield as well. Was there any intention behind this?

Just thought I'd share this:On my shield, Pin 6 is not connected to anything at all!Reset goes to Pin 5, I repeat Pin 5!! It has taken me a year to realise this and explains why I haven't been able to make it run through less than the seven bands. I've checked the board thoroughly and I'm afraid, Sparkfun, it's not me that's mad. Just wondering how this passed your testing? So countless people out there are carefully timing the reset when there is nothing connected to it - how mad is that?

I've been working with this version of the spectrum shield for a few weeks now and I've noticed something. Both equalizers return values on each of the bands when there is no input ( < 100 ). This happens both when there is no audible signal coming over the input line and when there's nothing plugged in to the input line at all.Is this an expected behavior?

Got mine a week ago but having problems audio out - the audio doesn't sound right when it pass through the shield. Tried different 4 male to male audio cables (cables them self work fine), different audio source and headphones/speaker. Also tried it with power on and off. seems like something wrong with the shield I got :(

The extra stereo jack adds around $0.10 to the cost of the board, and it useful for those not having a splitter lying around. It is good that it was kept.There are compact breakout boards available (Google is your friend). I think this is the only Arduino shield though.

hello, I am working on a project using the spectrum shield to have leds react to music. The sprectrum shield has an input and an output, one for the speaker and one for the stereo input from phone. Question is I want to use a Bluetooth speaker so we can send the music wirelessly through phone, will it work like that? so the input jack wont have an input

Nice little board that does a specific thing (reading stereo audio levels over 7 different frequency ranges) very well. Easy to use with an Arduino, and the shield has enough room to mount a pro mini board right on it. The audio in and audio out is a nice feature (allowing stereo audio through).

This is a fantastic little board for quickly adding audio analysis to any music related project! I used this shield, along with an RFM69 wireless transceiver, to broadcast the readings to an LED cube I 3d printed. The linked hookup guide was easy to follow and quick to get started.One small gripe did I had with this board was that analog pins 2-5, digital pins 2 and 3 (interrupts), and Tx/Rx are not broken out in the same fashion as digital pins 6-13. I used standard male headers to keep the footprint small, which meant I had to solder a jumper wire to any of those pins. If you plan to utilize any of those pins, I recommend using the stackable headers. Aside from that, this is a perfect little board. e24fc04721