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 […]

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 […]

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. […]

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 […]

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 […]