Recent Posts

41

General Discussion / Re: ZOE GPS proto board / ZOE setup with examples

« Last post by jgavlik on December 21, 2020, 05:18:24 PM »

Ben,

How can one charge the battery if the UART (USB port, I assume) is being used for this board? Let me know if I'm off base on this.

BTW, a 20mm x 20mm board would be fantastic!

Thanks,
John

42

General Discussion / Re: ZOE GPS proto board / ZOE setup with examples

« Last post by Ben Rose on December 18, 2020, 06:04:46 PM »

Thanks for the feedback, really appreciate it. Based on this and some review here, I think we will try to make this a 20x20mm TinyShield compatible with all processor boards, and use the ZOE-M8Q with UART as well as I2C if I can route it. The origins of the TinyScreen+ format board were a pretty specific use case. I'll update here, we'll build a few extra prototypes.

43

TinyDuino / Re: TinyZero with Accelerometer & Wake from Sleep

« Last post by HunterHykes on December 18, 2020, 03:05:33 PM »

Hi Steve,

As can be seen in the TinyZero schematic and board files, the INT1 pin of the BMA250 accelerometer is only broken out to a solder pad on the bottom side of the board. This is the small copper circle labeled "INT1" next to the "BOOT" button.

Because of this, a wire would have to be soldered to this pad and then input to the processor via a Proto Board TinyShield. According to the official Arduino documentation for interrupts, any digital pin except for digital pin 4 is usable for interrupt input to the TinyZero processor.

If this is something you'd still like to pursue, I can look into getting some sample code for this.

Hope this helps.
- Hunter

44

TinyDuino / TinyZero with Accelerometer & Wake from Sleep

« Last post by SteveDorr on December 17, 2020, 01:14:24 PM »

Hi,
I just purchased a Tiny Zero with the built-in accelerometer.  I would like to build a small app that goes into low-power mode and wakes up via an interrupt from the accelerometer if it detects significant movement.

I have the accelerometer working, but I'm looking for some sample code which puts it to sleep and codes the accelerometer to generate the interrupt appropriately.  From what I read people were soldering connections to make INT1 work on the proto board, but I'm wondering about the TinyZero which has it all integrated on the same board.

Thanks for your help.
Steve

45

General Discussion / Re: ZOE GPS proto board / ZOE setup with examples

« Last post by jgavlik on December 17, 2020, 11:53:14 AM »

WillemH said...

"With my model rocket application with UART only I have shown that it is not strictly necessary to have access to the I2C, ]but access to both UART and I2C will certainly increase the attractiveness of the new board"

I concur...john

46

TinyDuino / Re: GPS Logger No data returned

« Last post by lennevia on December 14, 2020, 02:57:12 PM »

Glad the issue could be sorted out!

Thanks for the update!

47

TinyDuino / Re: GPS Logger No data returned

« Last post by yost87 on December 14, 2020, 01:26:21 PM »

Hi Rena, I hope you are well.
As mentioned, I endured the metioed problem, I thought...

What I learned is that the stack was working, but I thought not because the serial monitor doesn't show the data.  When I checked the SD card, there was data being written I wasn't aware of.

Great job, thanks!

48

TinyDuino / Re: GPS Logger No data returned

« Last post by lennevia on December 14, 2020, 11:10:13 AM »

Hello,

You mentioned you found this program from the product page. I believe the full starting tutorial might help point you in the right direction: https://learn.tinycircuits.com/Sensors/GPS_TinyShield_Tutorial/

It looks like the example you are using is from the "GPS Tracker and Data Logger" project tutorial that requires some additional hardware other than a processor and GPS TinyShield. Are you using all of the same hardware that is referenced in the tutorial? You can see the full tutorial here: https://learn.tinycircuits.com/Projects/GPS-Tracker-Data-Logger_Tutorial/

Let me know if that helps, or if you run into any other questions!

I noticed you had some other comments on multiple threads ranging from recently to a few years ago - to keep things organized I will work on responding to this thread that you started and disregard the other comments, so please make sure to ask any outstanding questions in this thread.

Thank you,

Réna

49

General Discussion / Re: GPS shield

« Last post by WillemH on December 14, 2020, 04:14:54 AM »

For the technical answer please refer to my earlier post “GPS TinyShield does not provide actual altitude” on this forum.

Quote
The 5 Hz command for the Telit JF2 GPS  has been taken from the chapter ” Enable 5Hz Update NMEA” from “Telit_Jupiter_JF2_EVK_User_Manual_r0.pdf” found on internet:
"$PSRF103,00,6,00,0*23\r\n"
Unquote

Regards,
Willem

50

General Discussion / Re: ZOE GPS proto board / ZOE setup with examples

« Last post by WillemH on December 14, 2020, 03:58:19 AM »

Hi Ben,

with respect to existing examples of Arduino code to interface with u-blox modules I would like to mention the “Sparkfun Ublox Arduino Library”. This large code package is much more focused on the I2C interface than the UART, but it can provide some learning experience with the u-blox GNSS receivers.

If you plan to use the ZOE-M8Q instead of the ZOE-M8B, it means that the “normal” SPG 3.01 firmware version is applicable, so some peculiar default settings related to the “Super-E mode” of the ZOE-M8B have gone. This means that adaptation of power mode setup (PMS) and change of CFG-GNSS to include SBAS can be skipped.

If I am right, it also means 3.3 V supply instead of 1.8 V, so perhaps the level shifter could be left out.
If you include the ZOE-M8Q, is it perhaps possible to provide access to the I2C pins?
With my model rocket application with UART only I have shown that it is not strictly necessary to have access to the I2C, but access to both UART and I2C will certainly increase the attractiveness of the new board.

Regards,
Willem