USB Data aquisition board that works well with max msp ?

Apr 20, 2013 at 2:07pm

USB Data aquisition board that works well with max msp ?

Hi,
I am looking for a multichannel USB data aquisition board (DAQ) that will work more or less immediately with max – I want to get a stream of numbers in realtime measuring my signal with the minimum of faffing around – though I would like to add a filter. I would also like it to have at least 1000 hz sampling rate per channel .Here is an example though I dont know if it works with max :

http://www.dataq.com/products/startkit/di149.htm

Any suggestions ?

PS I do not wish to use an arduino for various reasons

#67838
Apr 20, 2013 at 3:40pm

Teensy? http://www.pjrc.com/store/teensy3.html

It looks like if you want the DI-149 to work faster than 240hz you have to pay an additional 195usd?

#243961
Apr 20, 2013 at 4:24pm

Cheers. maybe this would be a better example :

http://sine.ni.com/nips/cds/view/p/lang/en/nid/201986

So I have a couple of questions :

1. I am measuring very tiny electrical impulses – typically 40 mv above a background noise of 20 mv – but I will probably use an instrumentation amplifier to boost this.Can the Teensy do this (eg does it offer differential inputs) ?
2. What is the sampling rate and is this divided amongst the channels ?
3. How do I get the channels into max as seperate streams ?

#243962
Apr 20, 2013 at 5:39pm

1) from my experience you’d be best off by amplification before hitting the device – thankfully amplifiers are extremely simple things.

2) dunno, you’ll have to look for the docs.

3) see 2 – this is a fairly normal thing to be doing with these devices, so there should be precedents.

#243963
Apr 21, 2013 at 9:19am

anyone else ?

#243964
Apr 21, 2013 at 4:04pm
#243965
Apr 21, 2013 at 7:11pm

Some products here can sample at up to 50 kHz: http://labjack.com.

#243966
Apr 21, 2013 at 9:17pm

@Roald -
yes I have been looking at Labjacks stuff – its definately fit for purpose – how easily will it be to get the data into max though ?

#243967
Apr 22, 2013 at 12:41pm

There’s an external for the U12 model here: http://ljcontroller.bzhtec.com/?ljp=download

Seems quite old but it’s MacIntel-compatible however…

#243968
Apr 22, 2013 at 4:05pm

@Roald – that looks perfect but … I am using a windows PC – any other suggestions ?
(don’t say it – just….don’t)

#243969
Apr 24, 2013 at 9:52pm

noone got anything working labjacks or NI gear ?

#243970

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