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NooM's Playground


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#1 NooM

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Posted 14 December 2012 - 02:47 PM

heres my little playground.
it contains:
netduino mini
102x64 lcd - spi
9dof imu sensor module + barometric sensor - i2c
128kb eeprom - i2c
temerature sensor - analog
trackball connected to pcf8574 - i2c
mcp23017 - i2c
4bit 7 segment (not connected atm)
sd-card slot - spi
real time clock (drifting a lot, like 2-3 secs an hour ...) - i2c
cp2102 usb-uart bridge
ftdi usb-uart bridge
max232
one step up and one step down module for 3.3 and 5v power supply

not on the sceen: joystick and led matrix module.

soon ill add a spi master <-> spi master wireless chip (NRF24L01+)
maybe some pIR chips (but well, they work without netduino/uC also)

next month plans:
i2c camera module (to save some pictures on the sd card) - not doable
bluetooth module - i hope i can get it to programm my netduino w/o cable (!) - working
ENC28J60 network module (spi) - dont have ethernet cable right now
TEA5767 fm radio (i2c) - todo

ill make better pictures as soon as i get my hands on a real digicam, not webcam as of now


everything now is working ofc Posted Image
(except the imu, need more code for them, in progress!) - imu working (at least i can read the basic values)


greetings


// edit: some video of my compass in action.
atm it sends its data per uart to pc, gets rendered there in xna

its on my old led matrix




//edit: COBS and a simple UART transport system added
// cobs is just ported from original author // damn - link is gona and i dont have it anymore :(

//edit multi I2c and temerature sensor code added, its a smooth sensor, change history lenght to //make it faster

 

//edit: i now hooked up my rgb matrix :)

its only 3bit color, but still impressive

 

https://www.youtube.com/watch?v=siBAG85j6Co

 

 

 

i also designed an app with that i can create images in color for it, its still in progress

(i klick the pixels, it shift to the next aviable color, a button to save it to a file is missing)

 

i also made a small "testbench" wich connect per uart to my netduino, and is capable of read/write register for a specified device (in that case my gyro sensor)

 

//edit: change in uart.cs its better now > it waits till it actually received the data it expects

uart class deleted for now, it has a memory leak

 

//edit: drivers for the mcp3201 added - 12 bit external adc.

also the uart bug seems to only affect stm32, have to look further into that.

 

// edit: uploaded a fixed version of realtimeclock (ds1307)

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#2 hanzibal

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Posted 14 December 2012 - 03:29 PM

Cool, that's what I call a feature rich playground! Mine only has 4 optocoupled MOSFETS for driving stuff that need power, a binary rotator, a button, an optointerruptor and some transistors. Soldered multiple headers on everything so that I can easily re-wire for different setups. I think I got the same step up/down converters, got them on ebay, got yours there too? What about audio, I got a tiny 2W stereo amp but it's not on my playground yet...

#3 Stefan

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Posted 14 December 2012 - 06:01 PM

I only have one word for this:

LIKE!
"Fact that I'm a moderator doesn't make me an expert in things." Stefan, the eternal newb!
My .NETMF projects: .NETMF Toolbox / Gadgeteer Light / Some PCB designs

#4 hanzibal

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Posted 14 December 2012 - 08:18 PM

TEA5767 fm radio (i2c)

Got this nifty little radio too, would you be willing to share some code for it?
I'd love to hear some radio on the mini amp.

#5 Paul Newton

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Posted 14 December 2012 - 08:43 PM

Time to invest in different colours of wire! :P Paul

#6 NooM

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Posted 15 December 2012 - 01:26 AM

hehe paul, yeah your right, i plan on buying some different for data lines @hanzibal: i think it will arrive in about a month (china snail mail) - ya i can share it than @hanzibal: yes my step-up - down are from ebay, the quality is very good, but they make a lof of electronical noise, so for sensor some capacitors are good. my oldest is 6 months and delievers 2amps w/o getting hot (just warm) - every day, and still works! optocouplers i have there too, from the trackball to the pcf8574 (cos the trackball was the only thing driven by 5v, but it works with 3v3 too, so they are useless now)

#7 hanzibal

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Posted 15 December 2012 - 02:16 AM

@hanzibal: i think it will arrive in about a month (china snail mail) - ya i can share it than

I got a couple of TEA5767 boards (they are really tiny) about a week ago but haven't had time to try them out yet. You'll probably beat me to it and that's probably just as well Posted Image

EDIT: About the step ups, I haven't run them through the scope but they seem to work really well. I connected a 1800mAh LiPo to one of them and had my Netduino Mini based mp3 player running off that for about 8 hours straight with earphones on full volume (no, I didn't wear them). At these voltages (3V7 -> 5V) efficiency is about 70% percent but should improve with increased voltage.

I haven't tried the step downs yet, but will use them on my amplifier @ 21V -> 5V at some point.

#8 NooM

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Posted 22 December 2012 - 08:06 PM

updates! ill add some more drivers/classes from time to time.

#9 NooM

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Posted 31 December 2012 - 01:55 AM

 

another update!

 

its not blinking for the eyes!



#10 NooM

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Posted 04 January 2013 - 06:09 PM

wohoo my radio ic (tea5767) allready works. the code is very basic, ill upload it the next few days (have to make it a little better)



#11 hanzibal

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Posted 08 January 2013 - 10:59 PM

Cool, looking forward to that and a short video would be great too!



#12 NooM

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Posted 09 January 2013 - 12:05 AM

i added the code for the tea. automatic station search is not included yet. i dont know if i even add this, no need.

 

video? well cant see much, more like hear :)

 

https://www.dropbox....r8lj/Bild47.jpg

 

its hooked up to my soundcards microphone in. antenna is a 75cm long wire

it works very good.

 

iam using 4 buttons to choose stations.



#13 hanzibal

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Posted 12 January 2013 - 08:06 PM

Yeah, that's exactly what I want - to hear it while you fiddle around with different radio stations.

May I suggest an IR remote control?

 

Because you *DO* have an IR remote control in place, don't you?

No playground with at least an ounce of self respect could do without one you know...   ;)



#14 Chris Walker

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Posted 13 January 2013 - 06:01 AM


 
another update!
 
its not blinking for the eyes!
Very nice! This would be perfect for playing Tetris :)

Chris

#15 rensky

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Posted 20 January 2013 - 02:27 PM

Hello, 

 

Very nice ideas. 

I am very interested in the Tea5767.cs, but I have no access. Is that intentional?

 

Best regards 

Ren



#16 NooM

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Posted 21 January 2013 - 09:37 PM

no, you should be able to open/download it. its linked in the first post

 

 

//edit: yeah it didnt work, sry, i dont know what happened. i reuploaded it now and it seems to work



#17 TinkeringTurtle

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Posted 19 September 2013 - 03:03 AM

Thanks for sharing these NooM! Your playground is loads of good fun. :D






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