Matrix user forums

Thanks. I am familiar with I2C, but the 23017 is a little different as it has 2 internal registers for the ouputs, so it appears the "sendbytetransaction" won't work. I will just have to "transmitbyte" everything.

Richard

Hi, I am trying to connect 4 individual mcp23017 expansion chips to a 16f877a using I2C. I have dip switches for the A0, A1,A2 pins to set the address on each chip, with 5.6K pulldown resistors. The Reset pin on the 23017 is connected to 5v. I have pull-ups on the I2C lines. All I am using it for is...

I figured out how to do it, only using integers. I created 3 loops, one to figure out the whole number, passed on the remainder, one for the tenths, passed on the remainder, and one for the hundredths. Once I figured it out, it is quite simple (what isn't), and can be used for any base number to be ...

Hi, I am sampling an accelerometer and placing the result in an integer (AccelMax). The accelerometer represents 0 G's as 0 counts, and 16 G's as 32767 (2048 counts per G) If I just divide the integer (AccelMax) by 2048, it rounds it off down to the nearest whole integer. I need to be able to show a...

I figured it out. In the MPU-6050 component in Flowcode, I was using the "channel 1" setting instead of "software". My sample rate instantly jumped from 47 to 117 samples/sec. I then tried changing the uC clock back up to 8Mhz, and my sample rate went up to 937 samples/sec. Once I take my test outpu...

Thanks for the response. I was able to get the 6050 to communicate with the uC, but it is only sampling approximately 46 times per second. I have included my code again so you can see what I have done. In my sampling loop, I am turning an output on, and then immediately off, and using my oscilliscop...

Hi Peter,

Can you post your code please so we may be able to help.

Richard

You can also just have your chart displayed, click "Print Screen" on your keyboard. This takes a screenshot and saves it to the clipboard. You then open paint, click paste, save the file, and print it on any machine.

Richard

Hi, I am not new to flowcode but this is my first post and I am new to I2C. I am trying to connect an MPU-6050 accelerometer to a pic 16f1829. The application is I have the accelerometer attached to a platform, that we drop a weight onto. I need to be able to measure the impact G forces and display ...