Recent Posts

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21
Hi,

I followed the instructions in
https://digistump.com/wiki/digispark/tutorials/connecting

esp. pasting this URL into prefs| add. board URLs:
https://raw.githubusercontent.com/digistump/arduino-boards-index/master/package_digistump_index.json

After downloading I expect that the Digispark stuff appears in the board manager (under contributed as stated in the tut.)

But that is not the case. But all other projekts e.g. Arduino mega... works
What now?

greetings
pi
22
Digispark (Original) Support / encodeur and attachInterrupt()
« Last post by fr on March 25, 2021, 10:45:25 am »
Good morning all,

I took out an old digispark to ask it to manage a small motor with a quadrature encoder, the motor is driven by an MX1508.
I want to keep P1 for its internal led, not touch P5 for now.

I still have P0 and P2 to put the hall sensors of the encoder and to use attachInterrupt (0, ... P2 is perfect but P3 and P4 are activated at the initialization of the digispark and then by the bootloader and therefore my engine starts in motion: annoying ...

The driver on P0 and P2: perfect BUT how to order an interrupt on P3 or P4? (solution that I would like the most!)
Or if P2 perfectly controls the interruption, how can motor movements be prevented at the start?
23
Digispark (Original) Support / encodeur and attachInterrupt()
« Last post by fr on March 25, 2021, 10:43:58 am »
Good morning all,

I took out an old digispark to ask it to manage a small motor with a quadrature encoder, the motor is driven by an MX1508.
I want to keep P1 for its internal led, not touch P5 for now.

I still have P0 and P2 to put the hall sensors of the encoder and to use attachInterrupt (0, ... P2 is perfect but P3 and P4 are activated at the initialization of the digispark and then by the bootloader and therefore my engine starts in motion: annoying ...

The driver on P0 and P2: perfect BUT how to order an interrupt on P3 or P4? (solution that I would like the most!)
Or if P2 perfectly controls the interruption, how can motor movements be prevented at the start?
24
Digispark (Original) Support / help! robot with digispark and l293d
« Last post by dlc_mnl on November 01, 2020, 09:32:13 pm »
hi, I would like to make a robot with a digispark attiny85 and a l293d driver, could someone help me with the diagram, I want to connect it to a 9v battery.

create this dialog but it doesn't work :(
25
I have converted one of my Oaks to Arduino ESP8266 Core a while back and it worked fine. But now when I reflashed it with Platform.IO and left it off overnight it would not boot anymore and upon inspection it just kept drawing about 500 mA at 3.3 V while cooking itself silly quite in a hurry.

I thought it was just bad luck but when the same happened to two of the other Oaks I was left completely baffled.

The last one was flashed multiple times, restarted and everything worked fine, but as soon as I completely removed it's supply voltage (not using the reset pin to restart it) it went into the same unresponsive power hungry state as the others.

None of them will respond on the serial port, even though I try to start them in serial programming mode by holding P2 to GND and they just sit there trying to crisp themselves with 450 to 800 mA of current at 3.3 V.

Does anyone have an idea if they are salvageable or should I just forget about them, toss them in the bin and get a more mainstream ESP board?
 
26
I have found a lot of postings on how fuse settings can be set on external attiny85 chips, but so far I haven't seen anything on how to change the digispark's own fuse settings. In particular, I want to use pin 5 as a reset pin.

Thanks
27
Yep, still valid for the most part.  Once you move away from the broken Particle environment, the Oak is basically just an ESP-12F module plus power supply regulation, and with a quasi-Digispark-compatible pin layout.  The ESP8266 Arduino core now supports Oak directly so you don't need to use the special core here - you just need a 3.3v serial interface to flash code into it.  Have fun!
28
Oak Support / Re: SPI Pins mislabeled
« Last post by bratoff on June 25, 2020, 03:59:43 pm »
Here's a crude edit that corrects the SPI pins and also adds the GPIO pin numbering.

29
Digispark Pro Support / Re: Corrupted Bootloader. Please Help!
« Last post by Shaker on June 18, 2020, 10:57:49 am »
If I'm allowed to add something here...

I want to try exactly this, but with an Adruino DUE, that AFAIK works with 3,3V on each of its pins. Can I still reflash the bootloader of a Digispark Pro with an Adruino DUE?
30
Is this still valid in 2020? I bought few oaks in kickstarter struggled at the beginning so they went in a box and now I have found them again and wanted to put them to good use.
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