TinyCircuits

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General Discussion / Re: Project Feasibility
« Last post by Lorenzo on June 23, 2017, 10:17:52 PM »
As a mechanical engineer, I'm convinced I can get the information I want from the load cell and accelerometer. As a machine designer and not a researcher, I realize it might not work as well as I hope.

I thought about using an SD card (and still might), but it would be cool to have it in real time.

I'm just happy to have confirmation that it should work, so thanks!
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General Discussion / Time and message display
« Last post by Psychotic_Carp on June 23, 2017, 10:07:14 PM »
Hello, I wanted to try to mkae someone a tniy display that would show the date/time and also messages at random, which parts would I need to do this?
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General Discussion / Re: Raspberry Pi desktop on tiny screen
« Last post by percramer on June 21, 2017, 03:49:41 PM »
We do something similar. Our core product runs a standard pi3 and it is connected to the tinyscreen+ through a serial connection. We have got a small menu system to setup the ip address on the pi etc. And we show some stats. But we don't use it as a display driver (or something like that), but that is because we run a linux version with out any desktop etc. So we have got a small program that is running as a daemon on the pi. It communicates with the Tinyscreen+ module.

I am a c# programmer by trade, so i am working hard on brushing up my c++ skills. I wrote a small gui lib for this project, i am thinking about putting it up on GitHub, but i first need to clean up the code  :-X

Regards,

Per
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General Discussion / Re: Project Feasibility
« Last post by percramer on June 21, 2017, 03:44:36 PM »
Well the part about sending etc will be possible, that is pretty easy. I don't know if bluetooth is the easiest option for this, but that all depends on your programming skills. Because there needs to be some software on the pc (or mac) that processes the data. Do you need it realtime? Else you could log to an sd card for example. That is easier and you can just import it into excel by putting the sd card into your pc.

I have worked with load cells before, but that was for lifting purposes with chain hoists. I am trying to decide if it will work fencing swords  :o

Regards,

Per
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General Discussion / Project Feasibility
« Last post by Lorenzo on June 20, 2017, 12:41:48 PM »
I've never used Arduino, and I'm planning a project using it. Since I don't know what I'm doing, I'd like someone to confirm that the idea is feasible before I buy parts.
The goal is to measure impact forces in a fencing sword in real time. I'm planning a tinyduino, Bluetooth tinyshield, accelerometer tinyshield, and a load cell connected through a protoboard tinyshield.
I'm assuming that I can send the data from the accelerometer and the load cell through Bluetooth to a computer, and do all the data processing and storage in the computer.
Will that work? Is there a big problem with the idea?
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TinyDuino / GPS only printing ****
« Last post by arturoservin on June 20, 2017, 12:22:55 AM »
Hi

I am using the sample code for the gps-tinyshield (TinyShield_GPS.ino)

It seems that the GPS is recognized but the output it is only *'s.

Sats HDOP Latitude  Longitude  Fix  Date       Time     Date Alt    Course Speed Card  Distance Course Card  Chars Sentences Checksum
          (deg)     (deg)      Age                      Age  (m)    --- from GPS ----  ---- to London  ----  RX    RX        Fail
-------------------------------------------------------------------------------------------------------------------------------------
**** **** ********* ********** **** ********** ******** **** ****** ****** ***** ***   *******  ****** ***   63    0         0 


I changed the bauds to 4800 and 9600 and same output.

Any idea of what else I need to change?

Thanks
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TinyDuino / TinySaber assembly instructions
« Last post by scalefree on June 19, 2017, 09:52:08 PM »
I'd like to suggest a small addition to the assembly instructions for TinySaber.  You should mention that all the case pieces have sticky paper on both sides that needs to be peeled off before you put them together.  At first I thought they were wood & you cheaped out for some reason.  It took a while for me to see what they really were made of so I could take the half-assembled case apart, peel off the paper bits & put them back together.  Aside from that (& the lack of source code - I want to add colors, patterns & new tap commands at the very least) it's a really fun little piece to carry around.
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TinyDuino / TinySaber source code?
« Last post by scalefree on June 19, 2017, 09:43:22 PM »
I'm not sure which forum this belongs in so I'll just put it here.  I love all your products & I own most of them.  Last weekend I received your latest piece, the TinySaber.  Cute & fun to carry around to play with, a sure conversation starter.  But a big part of owning any arduino is writing your own programs or at least tweaking the examples that come with them.  I know it's your newest product, only available a short time & you guys have promised the saber's source is coming.  If you could give me some idea of how long it'll be or what the hold up is I'd probably be a lot more patient.  So what's the scoop?
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General Discussion / Tinyscreen+ menu system
« Last post by percramer on June 12, 2017, 04:49:58 PM »
Hi all,

i was wondering if there is anybody here that has adapted one of the existing menu libraries for the Tinyscreen+ modules? I am currently looking at : https://github.com/DynamicPerception/OMLibraries/blob/master/OMMenuMgr/OMMenuMgr.h

But if somebody already did a menu system for the Tinyscreen+ then i wouldn't have t reinvent the wheel again.

Regards,

Per
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TinyDuino / Running motor logic from coin cell battery
« Last post by Fisu on June 11, 2017, 02:10:10 AM »
I have a wheeled robot with two dual motor shields (one to power two wheels, and one to power two motors with rotating brushes attached). Also attached is 3 ultrasonic distance detectors.

The whole thing was running from a single 4 AA battery pack. I realised that there was too much voltage going to the main TinyDuino board from that. So I removed resistor R3 from both motor shields, so the A4s can power just the 4 motors, and I would run the logic from the 3v coin cell.

With this setup, 9 times out of 10 it does not work. There's no motors running at all. On the occasion that it does work, the motors run, but the distance sensors do not react. Now when I attach the USB cable to the TinyDuino, it all runs perfectly - sensors and motors.

It seems like it is a power issue. Is the 3v coin cell too small to power the logic for the sensors and the motors? The docs say it should be able to run from 2.7 v.
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