Recent Posts

21

TinyDuino / Re: Using multiple 9AXIS IMU TinyShield

« Last post by Tacca on August 28, 2019, 04:06:25 PM »

Hello Tacca,

We are actually about to come out with a Kickstarter that would allow you to use multiple 9-Axis sensors in a smaller and cheaper format that takes care of any addressing conflicts you would run into by stacking multiple 9-Axis TinyShields. They also have different sized cables that work well with having sensors on different parts of the body.

I would recommend signing up for the TinyCircuits newsletter so that you can see when our new line of boards come out. The format of the line of Whisker sensors would work perfectly for this application!

Best regards,
Laveréna Wienclaw

Hello Laveréna,

I will subscribe and I am looking forward to see this new project.
And depending on the mobility and depth that this Whisker sensor can provide, it would definitely help my master's project thesis.
Unfortunately, since it's not even on Kickstarter yet, I think it won't arrive in time for me to use it in my research, but who knows right.

Thank you.

22

General Discussion / Can battery recharging be triggered through the Proto Board connections?

« Last post by kyledavis on August 28, 2019, 10:49:23 AM »

If I have a TinyScreen or TinyZero board with a Proto Board attached, can I apply a +5V and GND to the appropriate pins on the Proto Board to trigger the TinyScreen or TinyZero to recharge an attached battery without being connected to USB? It seems like it should work based on my reading of the schematics, but I thought I would ask before I risk frying a board.

If that's not possible, is there some other way to recharge an attached battery without being connected to USB? I ask because I have tiny robots that use these boards, and I ordered some very small 5V/300mA-max inductive charging modules from DFRobot that will be arriving shortly that I want to experiment with using on my robots, and it'd be nice if I didn't need to integrate a separate charging circuit into my existing custom PCB that they use.

These are the modules I'll be experimenting with, if that helps answer the question...
https://www.dfrobot.com/product-1283.html

Thanks in advance for any assistance on this subject anyone might provide.

Kyle

23

TinyDuino / Re: Using multiple 9AXIS IMU TinyShield

« Last post by lennevia on August 26, 2019, 03:46:42 PM »

Hello Tacca,

We are actually about to come out with a Kickstarter that would allow you to use multiple 9-Axis sensors in a smaller and cheaper format that takes care of any addressing conflicts you would run into by stacking multiple 9-Axis TinyShields. They also have different sized cables that work well with having sensors on different parts of the body.

I would recommend signing up for the TinyCircuits newsletter so that you can see when our new line of boards come out. The format of the line of Whisker sensors would work perfectly for this application!

Best regards,
Laveréna Wienclaw

24

TinyDuino / Using multiple 9AXIS IMU TinyShield

« Last post by Tacca on August 22, 2019, 02:36:05 PM »

Hello,

I am pretty new into the arduino and circuits world, and after doing some research I ended up here, strongly believing that tinycircuits might be the way for me.

I want to get data from multiple IMU's fixed at some body parts, I want these data timestamped/synced and collected on the go (like being feeded to a smartphone)...

My question is, am I able to stack multiple (3 or more) 9AXIS IMU shields together with a single TinyZero unit?

First idea was 1 TinyZero + 9AXIS + ExtenderCable + 9AXIS  + ExtenderCable + 9AXIS...
The data would be streamed via cable from the TinyZero to the Smartphone, and the energy source would be this too.

The second idea is a bit more expensive, a group of [1 TinyZero (lithium battery) + BLE + 9AXIS] per body part, so, 3 or more of each, then I would get all them via android app and figure out how to connect to multiple devices and sync the data from the multiple devices.

So before I spending quite a good amount in these circuits, is it possible? Is there a better way to achieve this?
If so, Is there any public projects near this that I can dig in?

Thank you very much.

25

TinyDuino / Re: Converting Bitmap Images for Use With TinyScreen+

« Last post by ZLee on August 12, 2019, 02:50:08 PM »

Hi Sakuyal,

It's funny I went through the exact same process as you a couple of weeks ago while I was writing the Minecraft Compass Tutorial https://tinycircuits.com/blogs/learn/minecraft-compass for the TinyScreen+.

It turns out you can display about 13-15 bitmaps within the flash and RAM.

I have attached the compass code here, a converter that actually works, and the images I converted!

Basically, all you have to do is create a Sprite object and associate it with a bitmap in a header file:

Code: [Select]

Sprite compass1 = {offscreen, -14, 96, 96, 0, minecraft_compass1};

In this case, minecraft_compass1 is a bitmap within sprites.h that was generated with the attached converter.

Please let me know if you have any more issues with this project

26

General Discussion / Re: From landscape to portrait

« Last post by Smalling on August 09, 2019, 04:22:34 AM »

Well explained, I appreciate

27

General Discussion / Re: volume not consistent when using tone()

« Last post by Smalling on August 09, 2019, 04:21:11 AM »

I think it must be like that.

28

General Discussion / Looking for a small battery connector

« Last post by seskindell on August 05, 2019, 02:41:03 PM »

Size is about 1mm thick .. smaller than a Molex Pico

29

TinyDuino / Re: Converting Bitmap Images for Use With TinyScreen+

« Last post by Sakuyal on August 02, 2019, 02:34:57 PM »

Alright, update to this.

So I've successfully drawn a very basic image (test.bmp attached) to the screen, but unfortunately the color palette isn't right and the image is mirrored. I recognized that the TinyScreen+ takes BGR instead of RGB colors, so I manually switched the R and B channels in Photoshop but unfortunately that didn't solve the problem. The second image attached shows what I get after switching the channels.

Help would be appreciated!

30

TinyDuino / Converting Bitmap Images for Use With TinyScreen+

« Last post by Sakuyal on August 01, 2019, 10:34:56 PM »

Hello,

The Tinyscreen+ is super cool! Just got mine today.

I've been fiddling around with it for a bit and want to get some small 96x64 images to display on there without an SD card attachment... so I've been looking into byte array conversion.

I've spent a few hours reading forum posts and trying out various kinds of converters with no luck--the arrays I've generated so far just come out as garbage on the screen. It seems that it's a bit more complicated than what I previously imagined as well, with several ways to convert an image, and I haven't found anything that says that format the TinyScreen+ would like its byte arrays.

Does anyone know the specifications of the byte array that the TinyScreen+ likes? I've seen the Flappy Bird in the example, but the images I'm trying to display are much bigger and more complicated color-wise than that small sprite so I haven't been able to glean much from that.

I could just be being stupid since I'm new to working with bytes directly, but I would appreciate it if someone could point me in the right direction. Thanks!