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by AquaMan
Mon Dec 15, 2014 2:05 am
Forum: General discussion
Topic: Using serial on the UART
Replies: 5
Views: 3811

Using serial on the UART

Lately I've been playing around a lot more with arduinos, specifically using their Tx/Rx lines and serial to talk to things like a little bluetooth to serial module. For people familiar with both systems, is it possible to do the same thing with the Pi through the UART pins using pyserial in python?...
by AquaMan
Sun Oct 19, 2014 1:54 am
Forum: General discussion
Topic: Reading from an ANT+ USB Stick
Replies: 9
Views: 15870

Re: Reading from an ANT+ USB Stick

For anyone that has this working, do you know how to manually send a message?

I'd like to be able to request the data page by writing something like
x46 xFF xFF xFF xFF x02 x02 x01

But I can't seem to get the format right. Any thoughts?
by AquaMan
Sat Jan 04, 2014 3:58 pm
Forum: Networking and servers
Topic: Email external IP address
Replies: 26
Views: 49910

Re: Email external IP address

Nicely written. I was trying something similar a few months ago and then found a really slick website called https://www.carriots.com/ So instead of sending me an email directly, it would send an update the carriots webpage. The idea behind carriots is that it listens for events (like the RPi sendin...
by AquaMan
Fri Nov 15, 2013 12:03 am
Forum: General discussion
Topic: Attaching a Digispark to my Pi
Replies: 2
Views: 1504

Re: Attaching a Digispark to my Pi

Success! And slightly easier than I thought. I think overall it costs a bit more than an ADC, but then plugs right into the USB slot of the Pi. Two of the pins are then used for USB communications, which leaves 4 available including: *All have 5V Digital I/O *Two have PWM *Two have Analog input * Th...
by AquaMan
Fri Nov 08, 2013 2:46 am
Forum: General discussion
Topic: Attaching a Digispark to my Pi
Replies: 2
Views: 1504

Attaching a Digispark to my Pi

Has anyone tried this yet?

I just got my Digispark this afternoon and haven't got much past the into. But the little guy has 3 hard ware PWM or 4 analog inputs, which would be a nice little addition. It's Arduino based, with I2C, so in theory that would leave 4 pins to play with.
by AquaMan
Sun Oct 20, 2013 8:55 pm
Forum: General discussion
Topic: Using USB instead of GPIO
Replies: 13
Views: 4220

Re: Using USB instead of GPIO

"I would ask has the OP actually tried driving it the simple way? " Yes. But when looking at my setup, it occurred to me that the RPi/GPIO represented $35 in between my USB and the motor (or anything physical). I found it odd that I needed something so [relatively] expensive and complicated for what...
by AquaMan
Sat Oct 19, 2013 10:55 pm
Forum: General discussion
Topic: Using USB instead of GPIO
Replies: 13
Views: 4220

Re: Using USB instead of GPIO

I actually already have something similar, but now that I've had a chance to think about it allow me to explain it a bit better. On the left side of my desk I have a computer with python and usb. The right side has a small dc motor that I'd like to move forwards and back. Right now I'm stuck on how ...
by AquaMan
Sat Oct 19, 2013 5:07 am
Forum: General discussion
Topic: Using USB instead of GPIO
Replies: 13
Views: 4220

Using USB instead of GPIO

I'm at the point where I'd like to switch from using the GPIO to using USB for control, but need a bit of guidance to get started. More specifically I'd like to control an MCP23017 - i2c 16 input/output port expander, or perhaps a ULN2803: 8 Channel Darlington Driver Can anyone give me a bit of a pu...
by AquaMan
Sat Oct 05, 2013 8:06 pm
Forum: General discussion
Topic: Looking to buy an R/C car to hack
Replies: 1
Views: 434

Looking to buy an R/C car to hack

Looking for suggestions. I want to control an R/C car with my pi, using bluetooth from my phone. I've got all the software stuff working, and the pi is ready to control something--but I need something to control. What I'd love is something like a tank, that uses two separate drive motors for the bac...
by AquaMan
Fri Mar 15, 2013 8:53 pm
Forum: RISCOS
Topic: Solved the "'the disk drive is empty' - CANCEL/RETRY" error
Replies: 10
Views: 4457

Re: Solved the "'the disk drive is empty' - CANCEL/RETRY" er

Aquaman: Pictures can say more than 1000 words. Photos are highly welcomed. Using someone else's photo http://img.photobucket.com/albums/v470/DaveWallisPics/SDCardSocketTop2.png There are copper two wires that run horizontally and connect to what I assume are pins 0 and 1 (or 12 and 13). When you i...
by AquaMan
Tue Feb 26, 2013 1:01 am
Forum: RISCOS
Topic: Solved the "'the disk drive is empty' - CANCEL/RETRY" error
Replies: 10
Views: 4457

Solved the "'the disk drive is empty' - CANCEL/RETRY" error

For anyone else running into this problem where the RISC OS boot says "'the disk drive is empty' - CANCEL/RETRY" The slot the SD card loads into has a tiny pressure switch that runs orthogonal to the direction the card slides. It has to press against another very small piece of wire to make a contac...
by AquaMan
Sun Feb 24, 2013 9:53 pm
Forum: RISCOS
Topic: STICKY: New to RISC OS? Read this!
Replies: 83
Views: 184728

Re: New to RISC OS? Read this!

tvjon wrote:"Raik"'s post on the ROOl forum about his 16 Gb. SD card image seems to work fine for me. Why not try that?
Uh?
by AquaMan
Thu Feb 21, 2013 5:16 pm
Forum: RISCOS
Topic: STICKY: New to RISC OS? Read this!
Replies: 83
Views: 184728

Re: New to RISC OS? Read this!

5. There was a flash of splash screen in colour, then got a panel saying: Message from desktop - Machine startup has not completed successfully: 'the disk drive is empty' - CANCEL/RETRY Has anyone been able to solve this problem? I've tried multiple SD cards of varying size. I've tried writing them...
by AquaMan
Wed Dec 19, 2012 12:06 am
Forum: General discussion
Topic: Reading from an ANT+ USB Stick
Replies: 9
Views: 15870

Reading from an ANT+ USB Stick

I'd like to read heart rate data from my Garmin USB Ant+ stick. Has anyone been able to make it work?

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