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Messages - Ben Rose

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TinyDuino / Re: TinyScreen+ Physical dimensions
« on: October 25, 2018, 04:30:58 PM »
Sorry this doesn't have a response, for future reference: this has the dimensions of the glass and active area of the screen.

TinyDuino / Re: Windows 7 not identifying tinyduno when plugged in
« on: October 25, 2018, 03:18:21 PM »
Sorry about the problem- it sounds like you might have a TinyScreen and TinyDuino but are looking at the TinyScreen+ instructions? Have you looked at the tutorial at ? Have you tried another USB cable? The computer should recognize something is plugged in, even if it's just the USB TinyShield on its own.

Sorry! Thought I had responded after your post on the 24th. Yes, it sounds like one board is the older revision- if I remember correctly the only release versions are 3 and 4, which will be silk screened on the PCB in very small font near the 32 pin connector. Rev 4 adds the battery voltage divider, as well as the bootloader change to display text. The voltage divider is just that- two 1M ohm resistors in series from the battery to ground, with the center tap connected to an analog pin. This results in pretty minimal current draw while allowing the ADC to still get a reasonable reading.

There shouldn't be a direct problem preventing updating the bootloader from a user program, but there wouldn't be any backup without being able to reflash with an external programmer- an error would probably brick the board, but there should not be an error :). I can look into this shortly if you're interested in trying it.

TinyDuino / Re: Question about TinyScreen+ low battery handling
« on: June 25, 2018, 07:05:14 PM »
Hey thesko-

This is a pretty wide topic, good questions. Some answers and opinions:

1. The batteries we sell as well as most similar lithium batteries have a protection circuit that cuts off power around 2.8-3.0 volts, the minimum voltage for these batteries. So there is not a safety concern and should only be a minimal affect on battery life by running it 'all' the way down to the cutoff.
2. TinyScreen+ will generally run down to 2.6 volts, but may act a bit differently when the input voltage is below the 3.3V onboard regulator voltage(such as analog reads, depending on reference, and OLED display).
3. 3.5V that you mention is definitely a low state of charge, it could be a good place to indicate a very low battery and prepare for shutoff.


Sorry about the tutorial not working. We're working on updating the TSV converter to support GIFs, updated version is at: and will work along the lines of . Can you test this and let me know what you find?

You mentioned only being able to program the hardware once- definitely not how it should be working, can you let me know what exact error message you are getting?

I've also attached video player code that includes a local version of the sdFat library and should compile.


Tiny Arcade / Re: Games Won't Boot
« on: February 16, 2018, 07:16:50 PM »
Can you let me know which games and exactly where they came from? I will see if I can reproduce the issue.


Tiny Arcade / Re: Screen not working
« on: February 16, 2018, 07:10:20 PM »
Wow as well, I'm not sure if that's a a damaged OLED or something else- glad you emailed us so we can replace it.


TinyDuino / Re: SmartWatch tutorial - where are the sketches?
« on: November 09, 2017, 02:34:00 PM »
Sorry this was an issue for a while, didn't see this on here- this was fixed a little while ago, and now there are updated sketches.

Tiny Arcade / Re: Zero Keyboard
« on: October 30, 2017, 04:58:32 PM »
Unfortunately it will not supply power though the micro USB port, however it should otherwise work with Arduino Zero USB Host code- let us know if you try.

General Discussion / Re: Square Circuit, Round Hole...
« on: October 30, 2017, 04:48:07 PM »
Yep, there was an option for round boards early on. New boards are square only, it's a (relatively) huge bump in area. Boards can sometimes be trimmed down, check for traces in the corners on newer boards! If it's just FR4 without traces, it can be carefully trimmed/sanded.

General Discussion / Re: Can I use display.print for unicode characters?
« on: October 30, 2017, 04:42:20 PM »
I've added this to the list of useful things we should really add to the TinyScreen library now that the majority of users are on the 32 bit TinyScreen+ platform with flash to store Unicode characters.

This is a good attempt, but the current library only handles ASCII numbers which fit into 8 bit values. This particular unicode character seems to be decimal 21834, which would be split into 3 UTF-8 bytes, which will all be discarded by the code expecting ASCII.

A workaround to get it to display would be to replace the 'start' and 'end' characters that are currently 21834 with 'a' like the ASCII example to 'trick' the code to use a different bitmap. This could be extended to a few characters tacked on to the end of your ASCII bitmap set, but would be pretty annoying for many characters.

Tiny Arcade / Re: Stuck in bootloader
« on: August 21, 2017, 07:00:20 PM »
Hi Jim,

This seems to happen once in a while, we're not able to reproduce it- if you're willing to try reloading the menu, please do so. Let me know what the outcome is either way.


General Discussion / Re: Wifi/Bluetooth
« on: July 27, 2017, 02:25:43 PM »
Hey- sorry about how long this has sat. We've been swamped with improving/producing Tiny Arcade and some other projects. We definitely recognize you as a fan :) and I appreciate your posts. This is a good topic for some discussion, plus we rarely get around to sharing what we're working on..

The Pi is definitely the dark side as far as I'm concerned :) Any of the small hardware shops like us of course can't directly compete. However right now our entry price for a processor board plus BLE or WiFi is pretty hefty compared to most. We are looking at what we can do for about $30:

1. NRF52 processor board. This is a duh, especially with much smaller modules available vs. the NRF51.
2. ESP8266 main board. ESP8266 support feels pretty mature now, but limited IO has slowed us down for a standard processor board. We can't compete with the $3 breakout boards as always, but I think we can make something tiny and unique that will make sense at a bit higher price. Hopefully we can look into ESP32 after that.

Plus new processor boards, helping our current BLE/WiFi options, especially when USB is needed:

3. We should finally have our 'TinyZero' out some time soon(the same Cortex M0+ as TinyScreen+, but in TinyDuino format) for less than $30
4. TinySeven(!) prototypes are on the way :)


General Discussion / Re: TINY ARCADE
« on: July 27, 2017, 01:35:17 PM »
Sorry this did not get a response on here, hopefully you tried contacting our support email- for reference, this just means there was an error during upload, and you should continue trying to upload the menu.

Sorry about this- if you checked the compatibility matrix for this, it looks like there is an error on it, these shields are not compatible. They share the same chip select pin. This was chosen years ago because we thought it wouldn't be a common combination. I'll send you an email- we'll replace with a similar board if appropriate or find another solution.

In the future we plan to have an alternate chip select pin on the SD TinyShield.

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