Mastodawn

I know I am 10 years late, but I find it wild that you can install a software on a 16,5 MHz Microcontroller, that absolutely does not have USB, and then you have an USB capable device.

#avr #attiny #vusb #micronucleus

Mark Struberg Jan 1

Found another area where the #Microchip #Attiny #AVR uCs have an edge over most of their #ARM counterparts: in rough conditions where you get lots of ripple on yout VDD.

While the ARMs have an internal voltage reference (most times 1.2V), they cannot use this vref as reference for their ADC. The ADC always uses VDDA, which is almost always internally tied to VDD.

In comparison the ATtiny402 can select VDD, 4.3V, 2.5V, 1.5V, 1.1V and 0.55V as vref.

Ofc the DMA mode on the ARMs is really nice

Rommudoh Dec 13

I designed another PCB... Small preview without revealing what it will be. It'll arrive mid January, though.
They will be manufactured by @aislerhq again, using the 20% December discount for using their #KiCad plugin.
It'll have the option to use an AVR DA compatible #microcontroller or a #tinyAVR one - I added options for both that I have in stock (AVR32DA32 and ATtiny814). Since it won't use many pins, I could have used smaller variants, too.
#AVR #AVRDA #ATtiny #pcbdesign #kicad #aisler #pcbdesign

Mark Struberg Dec 2

One of the areas where #Atmel #Attiny really shine is the power consumption in stop mode. When everything is off and the mcu is waiting for an external interrupt to wake up again.
On the ATtiny402 I constantly get around 135nA.
While the STM32 and other ARM consume less than the AVRs under steam, they only can get down to around 4..5µA in stop mode.

That doesn't sound much, but it means 30 times more battery life. With a LIR2032 this means 1 year vs 30 years standby.

0mega Nov 28

Falls ihr auch mal einen billigen #USBTinyISP verwendet, um #ATTiny 's zu programmieren, hilft euch evtl. diese "quick and dirty" udev-Regel weiter:

/etc/udev/rules.d/50-usb-isp.rules

SUBSYSTEM=="usb", ATTR{idVendor}=="1781", ATTR{idProduct}=="0c9f", MODE="0666"

Somē Oct 8

Trying to simulate a 1-bit saw wave with 8-bit PWM on the attiny85. A first glance of the wave form looks OK. Take a zoom and there's some strange high-frequency artifacts.

#atmega #attiny #attiny85 #dsp #embedded #audio #maker

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Kevin Karhan

Sep 27

@r @fluffykittycat @flower Obviously people have used the #RP2040 for many projects and given it's ease of programming, low price, excellent documentation and easy availability it's no wounder it does put pressue on #ATmega / #ATtiny, #Arduino, #Teensy, etc.

At least for low volume productions and prototypes as proof of concept.

#RaspberryPi shure are more and more targeting #embedded & #industrial clients given they do in fact disrupt the market as one can get proper #documentation and #tools without paying $$$$ upfront (AND sign NDAs) just to be able to boot #Linux on it.

And competitors fail at understanding that this makes #Broadcom look good and is their entry-way into acquiring new clients. Because selling hardware purely off specs may work in #amd64 land where shit's legacy and the way things work is so entrenched that basic stuff just works as in booting. #ARM and even #ARM64 fail at having that level of #standardization.

OFC the #Pi0 / #Pi0W / #Pi0W2 doesn't need to innovate since every competitor isn't even trying to compete but merely farting out boards with 0 documentation and some halfassed boot images and no post-sales support so they keep dominating by virtue of being the only ones that just work...

Tod Kurt (todbot)Sep 25

Finishing up the first ever electronic badge for our Sketching In Hardware conference (the 18th!)
They just need battery holders soldered & programming. A simple but fun design. Designed w/ @Leeborg #badgelife #attiny #avr #sketching2025 #sketchinginhardware