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strange t13A from AliExpress
I also have an ATtiny (DIP-8) that I gout from Ebay a few years ago. Both oscillators runs too slow (at 5V), but they require different OSCCAL values to be accurate. I had to...
Wednesday, 25 March 2020 - 17:18
PlatformIO
Last year I also worked together with the PlatformIO developers to implement what they call Dynamic fuse settings. Basically, if you use MightyCore, MiniCore or MegaCore you...
Wednesday, 5 February 2020 - 19:52
PlatformIO
There are pretty good support for a wide range of ATmegas through the third party Arduino packages MightyCore, MiniCore and MegaCore. If you don't want to use the Arduino...
Wednesday, 5 February 2020 - 19:13
ATmega809 Interrupt Vectors - Datasheet Error
I believe I stumbled across the same issue in October, but I didn't think more about it then. I was working on adding Arduino support for the entire megaAVR-0 family when I...
Tuesday, 10 December 2019 - 19:27
Standalone mEDBG UPDI programmer and issues with Avrdude
westfw is right. The goal is to use the stock mEDBG firmware (because it works with MPLAB, Atmel Studio and Avrdude) and handling the 12V pulse + NVMPROG key injection with a...
Saturday, 28 September 2019 - 08:50
Standalone mEDBG UPDI programmer and issues with Avrdude
Well, generating 12V is not an issue. What is an issue is the 65ms timeout on newer tiny0/tiny1's after the 12V pulse has been injected to the UPDI line.   In order to...
Friday, 27 September 2019 - 18:17
Standalone mEDBG UPDI programmer and issues with Avrdude
All I know is that I could not communicate with the target using Avrdude if I didn't connect the AREF pin to Vcc. The Xplained ATtiny817 board and the Arduino UNO Wifi Rev2 does...
Tuesday, 24 September 2019 - 13:45
Standalone mEDBG UPDI programmer and issues with Avrdude
The voltage divider is quite simple. It's the exact timing of the 12V pulse that requires some MOSFET logic. But by using SOT363's SOT23's and 0805's it shouldn't occupy too many...
Tuesday, 24 September 2019 - 09:49
Standalone mEDBG UPDI programmer and issues with Avrdude
For those who are interested, I'm planning to design a 12V version of the microUPDI board. It will still be powered from USB but 12V is generated on the board by a diode/...
Tuesday, 24 September 2019 - 06:54
Standalone mEDBG UPDI programmer and issues with Avrdude
I soldered a 10pin 1.27mm header to the Xplained 817 the so I could connect an Atmel Ice to the mEDBG chip. I just loaded the hex and eep using the device programming window.
Monday, 23 September 2019 - 21:20
Standalone mEDBG UPDI programmer and issues with Avrdude
I pulled 1.13 out from an Uno Wifi Rev2. It's hosted on my Github.
Monday, 23 September 2019 - 10:53
Standalone mEDBG UPDI programmer and issues with Avrdude
I've never had any issues with the 817 Xplained mini, but I've had similar errors on my 416 Xplained board. Try upgrading the mEDBG firmware. The latest version I've been able to...
Monday, 23 September 2019 - 06:30

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