Sub $50 10Hz GPS Receiver
02-03-2015, 04:00 PM
#1
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Sub $50 10Hz GPS Receiver
This idea came up because GPS chips are cheap, and so are bluetooth chips, and I didn't feel like paying ~$100 for something I could do myself.
Deezums pointed me on to this chip (it took about 3 weeks to get here), and I used an HC-05 bluetooth module that I have from work, same one I used on my MS3. I thought that I would have to use a micro controller in the middle but the output of the GPS turned out to be exactly what most apps need. After a bit of configuration I was able to get it to work.
Also ordered this (thanks Schuyler) and will be testing it too.
I will be adding asmall power supply mini-usb breakout and 3d printing a case. After I get that all done I will update this with a little how-to for people who want to follow suit.
Total cost so far:
$25 gps ($16 maybe)
$7 bluetooth
$2 mini-usb
$34 ($25 maybe)
Deezums pointed me on to this chip (it took about 3 weeks to get here), and I used an HC-05 bluetooth module that I have from work, same one I used on my MS3. I thought that I would have to use a micro controller in the middle but the output of the GPS turned out to be exactly what most apps need. After a bit of configuration I was able to get it to work.
Also ordered this (thanks Schuyler) and will be testing it too.
I will be adding a
Total cost so far:
$25 gps ($16 maybe)
$7 bluetooth
$2 mini-usb
$34 ($25 maybe)
Last edited by aidandj; 02-03-2015 at 05:31 PM.
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02-03-2015, 04:22 PM
#2
This idea came up because GPS chips are cheap, and so are bluetooth chips, and I didn't feel like paying ~$100 for something I could do myself.
Deezums pointed me on to this chip (it took about 3 weeks to get here), and I used an HC-05 bluetooth module that I have from work, same one I used on my MS3. I thought that I would have to use a micro controller in the middle but the output of the GPS turned out to be exactly what most apps need. After a bit of configuration I was able to get it to work.
I will be adding a small power supply and 3d printing a case. After I get that all done I will update this with a little how-to for people who want to follow suit.
Total cost so far:
$25 gps
$7 bluetooth
$4 power
$36
Deezums pointed me on to this chip (it took about 3 weeks to get here), and I used an HC-05 bluetooth module that I have from work, same one I used on my MS3. I thought that I would have to use a micro controller in the middle but the output of the GPS turned out to be exactly what most apps need. After a bit of configuration I was able to get it to work.
I will be adding a small power supply and 3d printing a case. After I get that all done I will update this with a little how-to for people who want to follow suit.
Total cost so far:
$25 gps
$7 bluetooth
$4 power
$36
Last edited by cyotani; 02-03-2015 at 10:57 PM.
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02-03-2015, 04:32 PM
#5
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Haven't done a whole bunch of testing. Probably around 30 seconds.
No idea? Its a chinese gps breakout board with no datasheet. I only dug in far enough to find power and tx/rx pins. I'm going to make a case with a clear acrylic top and mount it to my windshield so I'm not to worried about the antenna.
No idea? Its a chinese gps breakout board with no datasheet. I only dug in far enough to find power and tx/rx pins. I'm going to make a case with a clear acrylic top and mount it to my windshield so I'm not to worried about the antenna.
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02-03-2015, 05:23 PM
#6
hmm, i'm gunna order one of these and give the same plan a shot.
RYN25AI 10Hz UART Interface High Performance GPS Glonass Antenna Module Battery | eBay
Hoping i get just as lucky when it comes to microprocessor necessity.
RYN25AI 10Hz UART Interface High Performance GPS Glonass Antenna Module Battery | eBay
Hoping i get just as lucky when it comes to microprocessor necessity.
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02-03-2015, 05:24 PM
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hmm, i'm gunna order one of these and give the same plan a shot.
RYN25AI 10Hz UART Interface High Performance GPS Glonass Antenna Module Battery | eBay
RYN25AI 10Hz UART Interface High Performance GPS Glonass Antenna Module Battery | eBay
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02-03-2015, 05:58 PM
#9
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I don't want to commit to anything but if it works well and I don't run into any issues I will probably do a little group purchase. Gotta ask my boss what I would have to pay for 3d printing. Personal projects are free so I've never priced anything.
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02-04-2015, 11:03 PM
#15
Should consider not putting it in the windshield. You'll get lots of drops and shitty data if your roof goes between you and a couple satellites. This isnt noticable with 1hz phone gps, but its gets to be a problem when you're actually logging at 10hz. Best bet is on top of the hard top if you have one, or on the bit of metal just in front of the trunk.
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02-04-2015, 11:10 PM
#16
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Should consider not putting it in the windshield. You'll get lots of drops and shitty data if your roof goes between you and a couple satellites. This isnt noticable with 1hz phone gps, but its gets to be a problem when you're actually logging at 10hz. Best bet is on top of the hard top if you have one, or on the bit of metal just in front of the trunk.
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02-04-2015, 11:11 PM
#17
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GPS is typically line of sight. I will be testing out some options. So far once this module gets a fix its pretty hard to lose it.
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