Hi all, I have a Raspberry Pi that I would like to put the standalone Amazon Alexa software onto. Is there a way that I could control a python script that is on the Pi itself after giving a command to Alexa, even though they are running on the same board? I have seen this being done with a Amazon Ec...

The voltage from the external power lead goes all the way to the end of the cable at the chip at all points, this is why I'm a bit confused

I had that issue with the breadboard before, but i know for fact that I have the live and ground of the power cable into the same section on the power rail as the rest of the power connections, but it does not power anything even though I can see the voltage at the end of the cable, hope someone can...

Hi, Hope someone can help. I have a mcp23017 expansion chip and a 8 channel relay board connected to a breadboard. I would like to power these from an external power cable that is 5V 2A. When I power the breadboard from the raspberry pi itself, it all works fine. But if I swap to the power cable, it...

You, Sir, are AMAZING!!!! Just realized that my breadboard does have the gap in the middle, moved all the power cabled to the same side of the gap and its all working fine, so happy now thanks so much for your help

To be honest I could not tell you, but all the wires are all at one end of the board so i would find it a little confusing if all power and ground rails would be split at every gap, its also a good point. on my breadboard there is no lines on the power rails, just a indent to show where they are. I'...

From the pictures you can see that the first chip is set up exactly the same as the picture you have shown me, but the problem still exist that they don't both show up even though the chips are both connected correctly on the breadboard, sorry if I'm not understanding you. Many Thanks

These are the pictures that I have taken of my setup. The red cable goes from the pi's 3.3V pin and the brown cable goes to the ground pin. The Blue cable goes from the SDA pin on the pi straight to pin 13 on chip 1, the yellow cable goes from the SCL pin on the pi to pin 12 on chip 1. Both these ca...

That's what I have done but they work if connected on their own but if they both connect at the same time, it either shows neither connected or only the 0x20 address with address 0x27 keeps showing and disappearing when the same command is run several times. Sorry if this is repeating myself but it'...

I have 2 MCP23017 I2C Port Expander chips by microchip. I have installed them on a breadboard by using this guide: http://raspi.tv/2013/using-the-mcp23017-... If I install 1 chip at a time and set a random address, they both show up on the correct address when using the sudo i2cdetect -y 1 command (...