#81

Wirelings / Speedometer Hall effect sensor...

Last post by VXstudio - August 29, 2025, 04:12:12 PM

We're using the Hall Sensor kit for a bike activation for measuring speed on a bike activation. This was working until today.

Our dev thinks the libraries have changed. Is this right, can we switch back or change the code?

https://tinycircuits.com/blogs/learn/arduino-speedometer-hall-sensor-magnet

#82

General Discussion / Issue with TinyCircuit Arduino...

Last post by smcdouall - August 29, 2025, 04:12:04 PM

Hi, I'm getting an error with the code here when using the code in this tutorial https://tinycircuits.com/blogs/learn/arduino-speedometer-hall-sensor-magnet.

The result from hall.readMag() in the TinyCircuits_A1454.cpp is always -1. This is because the x and y values in the function are also -1. This is regardless of the magnets position to the sensor. I have tried swapping out various sensors/cables/Arduinos and even tried it on other computers and it still doesn't work. Around two weeks ago this code did work as intended. I am wondering if there has been an update to one of the libraries that has caused something to no longer work?

I tried ChatGPT a little and it found that running the following:

byte err = Wire.endTransmission();
Serial.print("I2C error: ");
Serial.println(err);

Resulted in err = 2 which apparently means "2: Received NACK on transmit of address".

This apparently means the board sent the sensor's I²C address, but the sensor didn't acknowledge it (NACKed it)

It also suggested trying an I²C scan to see what devices it could find. The only one it could find was 0x70 which I believe is the TinyCircuits Wireling TinyShield.

Any help would be greatly appreciated. This code was working before and now doesn't when I've tried to upload it to other Arduinos/the same original one.

#83

New Product Ideas / Re: Pre-soldered Breakout Wire...

Last post by bibletech55 - August 28, 2025, 08:05:28 PM

@bekeanloinse56 Thank you for your support! Like you said, the compact size of these Wireling breakout boards is definitely an advantage the terminal shield just can't match. I'm glad to hear a screw-terminal 0.1 breakout board would be such a useful product for several developers in this forum!

While pre-soldered screw terminals are not yet an option, there are other ways to solve this problem. In the case of your workshop, you could buy 0.1 breakout boards and screw terminals in bulk, then solder them before your class. Then your students don't have to solder any wires!

#84

TinyTV & Tiny Video Player / Re: Tiny Video Player Update M...

Last post by fnfunkin - August 25, 2025, 10:26:47 PM

I've had the same issue with the Tiny Video Player! When I tried to go into "Update" mode, it would just stay stuck on the boot screen. What worked for me was making sure the update file was on the root of the SD card and double-checking that the file format was correct before trying again.

#85

General Discussion / Re: Lipo battery

Last post by Pisces - August 22, 2025, 11:26:50 PM

I'm having trouble finding a block blast battery like this I ordered some from Amazon and they were too big the connecter is flat on top where can I find one that will work

You might want to check specialty electronics stores or battery suppliers online; sometimes they have the exact flat-top connectors you need.

#86

Thumby / Re: Can't add games to Thumby ...

Last post by Okra - August 20, 2025, 10:18:27 AM

There's a page about using Thonny:
https://color.thumby.us/pages/getting-started-with-thonny/getting-started-with-thonny/

It took me some time to find (I found this forum post before I found that), so I definitely commiserate.

There's also a Discord link in TinyCircuits' Contact Us page.

#87

TinyTV & Tiny Video Player / Re: Help Needed with Tiny Vide...

Last post by aureliojin01 - August 18, 2025, 05:32:41 AM

I ran into the same issue when I first tried using the Tiny Video Player. The TSV Converter app wouldn't open on my Mac either, even with permissions granted. What worked for me was using the official TinyCircuits support page—they have an updated converter tool that's compatible with Sonoma. Once I re-downloaded it directly from their site and converted my MP4 files, the TSV videos played fine with both picture and sound.

#88

General Discussion / Re: Thumby Power Problems

Last post by Snowrider3d - August 15, 2025, 09:38:57 PM

Oh no, that's a bummer about your Thumby! Water damage can be tricky. Since the rest seems to work, it might just be corrosion on the power switch contacts. Maybe try very carefully cleaning around the switch with a tiny bit of isopropyl alcohol (90% or higher) and a cotton swab. In the meantime, if you need a quick distraction while troubleshooting, have you ever tried Snow Rider 3D on a phone or computer? It's a simple but surprisingly addictive game. Hope you get your Thumby fixed!

#89

General Discussion / Re: Thumby Power Problems

Last post by Saiyad - August 15, 2025, 11:37:14 AM

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#90

TinyTV & Tiny Video Player / Re: Tiny Video Player Update M...

Last post by Anne Hathaway - August 08, 2025, 09:39:17 PM

I ran into the same issue with my Tiny Video Player a while back.
In my case, I had to make sure the USB cable was a data cable (not just charging) and that I was using the latest TinyScreen firmware update tool. Once connected, the boot loader screen stayed on, and the update started immediately after selecting the correct COM port.
You might also try holding the button until after the power switch is fully on – sometimes timing makes a difference.