Steve Smith from ProjectAVR has published a new build: On the board, I included several options to tailor the design to the builders taste. Provision for both a digispark board or bare ATTiny85 chip, small or large tact switches and a jumper to defeat the LEDs supply resistor for extra brightness. I chose to build […]
Tag Archives: ATtiny
ChipHeadBang – design for an USB to Serial converter with ICSP header for (slow) bitbang programming
microtherion has published new project the ChipHeadBang, that is available on Github: Design for an USB to Serial converter with ICSP header for (slow) bitbang programming, based on the CH340G chip. While this seems to work pretty well, and the CH340G can be obtained extremely cheaply from sources such as AliExpress, driver support can be a bit […]
DIY automatic water timer
Kyle wrote an article detailing his DIY automatic water timer: Now that I have power and output figured out, I need to work on the control aspect. 555 timers are great for simple applications requiring up to a few minutes of delay. At 10 minutes, the RC values needed would boarder the danger zone of the timer not functioning […]
Attiny25/45/85 police light with Arduino
Another Instructables by Jan Henrik, a police light with a Attiny25/45/85. He writes: Hello, in this project I want to show you how to build a multi functional Police Light with a Attiny25/45/85 . It will have serval animations , which can be changed with a button on the circuit board, it has 2 channels, […]
ATtiny LED driver for an RC car update
joeforker posted an update on his ATtiny LED driver for an RC car we covered previously: This board delivers 100mA through 2 series-wired LEDs like a champ, powered by a 2S LiPo. Night drives are looking bright. The glaringly bright uncomfortable-coming-straight-towards-you high beam look has been achieved. :-) As usual, mistakes were made. The through hole components […]
HVSP fuse resetter
An AVR ATtiny HVSP fuse resetter by SimpleAVR reads device signature and hi-low fuses for hi-voltage serial programmable attinys reset hi-low fuses to factory default on target devices layout to drop-on attiny13, attiny25/45/85 8 pin devices targets attiny24/44/84 targets needs additional breadboard and jumper wires standalone operations, fuses values show on 7 segment display cannot reset […]
ATtiny LED driver for an RC car
joeforker posted his ATtiny LED driver for an RC car in the project log forum: I thought I’d share a little board I’m making to add headlights to a model car. The board is a little 1″ square thing with mounting holes. The top right contains a constant-current driver built from a BC847 BJT, a 2N7002 […]
Night light 2.0, part II
Kevin Rye built this Night Light 2.0: And there it is. Definitely not my best work, but it’ll do. I just wanted to use up that last PCB left over from the Tesseract build. I guess it was better to use the PCB for something rather than have it sitting in a parts drawer. I imagined the entire […]
DIY programmable bike light – Arduino or ATTiny and RGB LED
Oscar built a DIY bike rear light to keep him safe and wrote a post on his blog detailing it’s assembly: In this project I will be using a microcontroller to allow for switching between the various functions I programmed. The entire system is built on the backbone of an ATtiny4313 chip with a few other parts totalling at about $35. […]
DIY surround sound dock for Apple iPods and iPhones
Here is an open source surround sound dock for Apples i-devices. It features the standard Apple connector, has two 1W speakers, and an external output for headphones. It’s uses the LA2610 analog surround sound processor and an ATTiny13 microcontroller.
µBoot 2.1 KB USB bootloader for the ATtiny85
Bluebie is developing µBoot, a tiny USB bootloader that only consumes 2.1 Kilobytes of flash on an ATtiny85. It’s based on USBaspLoader-tiny85 bootloader but loses ~0.7KB by customizing it’s functionality. µBoot is a tiny bootloader for attiny85 chips. Weighing in at just under 2.1kb it leaves more free space to uploaded programs than any other […]
Single-sided Little Wire AVR programmer
MickM build a single layer version of the Little Wire project. He uploaded the source files for the board in the forum. Little wire is am ATtiny-based open source AVR programer that’s packed full of features: An AVR programer Four digital GPIO pins ADC with 10 bit resolution Two parallel hardware PWM outputs An USB […]
Little Wire – Minimal AVR programmer update
Ihsan made some updates to his Little Wire project. In order to reach more people out there , i wrote a Processing library for the Little-Wire. It’s still in progress but i’m uploading an example Analog voltage plotting program screenshot that i tested. I used mainly two sources to achive this library. Here is one. […]
Little Wire UART bootloader
Kehribar added a UART bootloader to his Little Wire AVR multi-tool. The Little Wire is an AVR programmer that can also be used as an SPI bridge, analog-to-digital converter, and PWM generator. This project uses the ATtiny Reset pin, which means a high voltage programmer has to be used to setup the pin configuration fuses […]
Santa’s ATtiny13 LED hat
Mark mounted ATtiny13 controlled Christmas LEDs into a santa cap: Here is the post demonstrating the circuit nicely mounted in an Altoids tin, powering lights I’ve put inside my Santa hat. Via comments.
DIY ATTiny85 Development Board
Christopher built an ATTiny85 development board. It has all the microcontroller pins broken out to a 2×4 dual row pinheader, a power indicator LED, and a reset button as well.
Prototype: Hackable LED Christmas card & ornament
Holiday cards that blink and beep have always fascinated us. This is our hackable DIY version, made with an ATtiny13A and a few LEDs. Push the button to play a short light show in the tree. We’re sending these to friends and family this year. It’s a handmade, hackable gift, and it was a ton […]