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Felix Bonowski
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|---|---|---|
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| //////////////////////////////////////////////////////////////////// | ||
| // This sketch shows how to remote control wearable LEDs using text messages | ||
| // | ||
| // Messages sent over the Twilio API can be received by a GSM Module. | ||
| // We used a generic 'SIM900' based Module, but anything that understands AT-commands over UART should work as well. | ||
| // | ||
| // A chain of individually adressable WS2801 LEDs is controlled by the Arduino. | ||
| // The code supports current limiting to allow safe powering over USB. | ||
| // | ||
| // Except for the Rainbow-Fade Effect by Stefan Hintz/TrafoPop, this code is under A Creative Commons Attribution/Share-Alike License | ||
| // http://creativecommons.org/licenses/by-sa/4.0/ | ||
| // (2014) by Felix Bonowski / Made for Twilio | ||
| //////////////////////////////////////////////////////////////////// | ||
|
|
||
| ///////////////////////How to wire things up://///////////////////// | ||
| // | ||
| // ----------Connection to the GSM Module:-------------------------- | ||
| // Our module was a bit picky about power. | ||
| // It needs AT LEAST 5.0V, anything less and it will crash erratically... | ||
| // The Arduino 5V pin actually gives you only about 4.7V because of the voltage drop across the protection diode on the Arduino board. | ||
| // The easiest way to make things work reliably is to cut a USB cable in the middle and draw power from it directly. | ||
| // | ||
| // So here is how you do it... | ||
| // GSM Module Ground/'-' <----> Arduino GND/0V (both connections are needed- see below!) | ||
| // GSM Module Ground/'-' <----> Cut USB cable GND (usually black) (both connections are needed- see above!) | ||
| // GSM Module 5V/'+' <----> Cut USB cable 5V (usually red) | ||
| // GSM Module RX <----> Arduino TX (Pin 0 on Leonardo/Micro/ProMicro, see below for Software Serial i.e. on Nano) | ||
| // GSM Module TX <----> Arduino RX (Pin 1 on Leonardo/Micro/ProMicro, see below for Software Serial i.e. on Nano) | ||
| // GSM Module Power-On <----> Arduino any digital Pin (#defined by 'gsmPowerPin' below) | ||
| // | ||
| // ----------Connection to the LEDs:-------------------------- | ||
| // | ||
| // Any kind of WS2801 SPI-type controlled LEDs are supported. | ||
| // They can draw a low of power, so make sure you set the current limit and/or have a good USB power supply... | ||
| // It is also a good idea to put a large electrolythic capacitor (~1000µF, >=10V) in parallel to the LED Power supply | ||
| // | ||
| // | ||
| // Unfortunately, there is no standard color scheme for the wires, so you will have to look at the datasheet to find out. | ||
| // | ||
| // LED strand GND/0V/- <----> Arduino GND and/or cut USB cable GND (usually black) | ||
| // LED strand 5V/+ <----> Arduino 5V and/or cut USB cable 5V (usually red) | ||
| // LED strand MOSI/Data in <----> Arduino MOSI (Pin 16 on Arduino Pro Micro, Pin 11 on Arduino Nano) | ||
| // LED strand SCLK/Clock <----> Arduino SCLK (Pin 15 on Arduino Pro Micro, Pin 13 on Arduino Nano) | ||
| /////////////////////Have Fun!////////////////////////////////////////// | ||
| This sketch shows how to remote control wearable LEDs using text messages | ||
|
|
||
| Messages sent over the Twilio API can be received by a GSM Module. | ||
| We used a generic 'SIM900' based Module, but anything that understands AT-commands over UART should work as well. | ||
|
|
||
| A chain of individually adressable WS2801 LEDs is controlled by the Arduino. | ||
| The code supports current limiting to allow safe powering over USB. | ||
|
|
||
| Except for the Rainbow-Fade Effect by Stefan Hintz/TrafoPop, this code is under A Creative Commons Attribution/Share-Alike License | ||
| http:creativecommons.org/licenses/by-sa/4.0/ | ||
| (2014) by Felix Bonowski / Made for Twilio | ||
|
|
||
|
|
||
| How to wire things up: | ||
|
|
||
| ----------Connection to the GSM Module:-------------------------- | ||
| Our module was a bit picky about power. | ||
| It needs AT LEAST 5.0V, anything less and it will crash erratically... | ||
| The Arduino 5V pin actually gives you only about 4.7V because of the voltage drop across the protection diode on the Arduino board. | ||
| The easiest way to make things work reliably is to cut a USB cable in the middle and draw power from it directly. | ||
|
|
||
| So here is how you do it... | ||
| GSM Module Ground/'-' <----> Arduino GND/0V (both connections are needed- see below!) | ||
| GSM Module Ground/'-' <----> Cut USB cable GND (usually black) (both connections are needed- see above!) | ||
| GSM Module 5V/'+' <----> Cut USB cable 5V (usually red) | ||
| GSM Module RX <----> Arduino TX (Pin 0 on Leonardo/Micro/ProMicro, see below for Software Serial i.e. on Nano) | ||
| GSM Module TX <----> Arduino RX (Pin 1 on Leonardo/Micro/ProMicro, see below for Software Serial i.e. on Nano) | ||
| GSM Module Power-On <----> Arduino any digital Pin (#defined by 'gsmPowerPin' below) | ||
|
|
||
| ----------Connection to the LEDs:-------------------------- | ||
|
|
||
| Any kind of WS2801 SPI-type controlled LEDs are supported. | ||
| They can draw a low of power, so make sure you set the current limit and/or have a good USB power supply... | ||
| It is also a good idea to put a large electrolythic capacitor (~1000µF, >=10V) in parallel to the LED Power supply | ||
|
|
||
|
|
||
| Unfortunately, there is no standard color scheme for the wires, so you will have to look at the datasheet to find out. | ||
|
|
||
| LED strand GND/0V/- <----> Arduino GND and/or cut USB cable GND (usually black) | ||
| LED strand 5V/+ <----> Arduino 5V and/or cut USB cable 5V (usually red) | ||
| LED strand MOSI/Data in <----> Arduino MOSI (Pin 16 on Arduino Pro Micro, Pin 11 on Arduino Nano) | ||
| LED strand SCLK/Clock <----> Arduino SCLK (Pin 15 on Arduino Pro Micro, Pin 13 on Arduino Nano) | ||
|
|
||
|
|
||
| Have Fun! |