avr

Versatile ATtiny Programming Adapter

fustini, , , , , Leave a comment

Lucky Resistor designed this programming adapter for ATtiny13 and similar chips:

lucky-resistor-6

A Versatile ATtiny Programming Adapter

As mentioned in my article about designing a cheap plant watering sensor, I built a small adapter which can be used to pre-program the ATtiny13A. This is necessary, because once soldered on the board, I only have a debugWire interface, which has to be enabled first.

lucky-resistor-5

The adapter has a small 50mil JTAG header, where the Atmel ICE can be connected with the board. There is also room for a USB mini jack, which is used to power the MCU while programming. A small on-off switch is used to power the MCU and a LED is placed as indicator to see if the MCU has power.

One of the DIL/ZIF adapters is mounted on top of the female headers. Most of the adapters for SO-8, SO-14 and SO-16 will work with this board.

https://luckyresistor.me/2017/02/25/a-versatile-attiny-programming-adapter/
https://luckyresistor.me/2017/02/25/a-versatile-attiny-programming-adapter/

To make the board more versatile, I added a number of jumpers and solder points. By default, the adapter is connecting to the right pins for the ATtiny13A, but you can cut these routes and solder wires onto the board to implement any kind of connection you like.

The design files are available on GitHub:

github.png LuckyResistor/ATtinyAdapter

LuckyResistor has shared the board on OSH Park:

ATtiny Adapter

d8e993c190c6a0276438a5ca4e1b736b.png
Order from OSH Park

Versatile ATtiny Programming Adapter

$3 Tinusaur board on IndieGoGo

fustini, , , , , , Leave a comment

Neven Boyanov has launched a new Tinusaur campaign on IndieGoGo:

Learn, Teach and Make with the Tinusaur

Small microcontroller board that could run Arduino and help you learn, teach others and make things

uvloj5csuhcx0ri4yn5c

The Tinusaur is powered by the Atmel ATtiny85 microcontroller.

https://www.indiegogo.com/projects/learn-teach-and-make-with-the-tinusaur-arduino#/
https://www.indiegogo.com/projects/learn-teach-and-make-with-the-tinusaur-arduino#/
https://www.indiegogo.com/projects/learn-teach-and-make-with-the-tinusaur-arduino#/
https://www.indiegogo.com/projects/learn-teach-and-make-with-the-tinusaur-arduino#/
https://www.indiegogo.com/projects/learn-teach-and-make-with-the-tinusaur-arduino#/

We want to bring the cost down to $3 for the basic “lite” boards
and allow more people to be able to get them.

$3 Tinusaur board on IndieGoGo

ATtiny45 motion sensing night light

fustini, , , , Leave a comment

DanR has shared this motion sensing night light board:

52a565338ea97ef07276d81c9bc9584c

ATtiny45 motion sensing night light V1.2 D

This light is powered by an ATtiny45/85 which powers on the 14 LED lights when motion is sensed and it is in a dark room. The light sensor on the board will not allow the lights to come on if it is in a reasonably lit room.

It is fitted with a barrel plug for power, this model specifically with an L7805CV voltage regulator.

Order from OSH Park

ATtiny45 motion sensing night light

DICE10: electronic dice controlled by two GPIO

fustini, , , Leave a comment

Yay, another mini-project with the ATtiny10! A while ago I devised a scheme to drive an electronic dice with only two IO lines. I finally found the time and motivation to build up a small design using this as an entry for the hackaday 1k compo

via DICE10 – electronic dice controlled by two GPIO. — Tim’s Blog

DICE10: electronic dice controlled by two GPIO

ATTiny-Widget

fustini, , , Leave a comment

designed this simple board with two ATTiny processors powered by a micro USB connector.

images1ATTiny-Widget

https://github.com/jonmash/ATTiny-Widget
https://github.com/jonmash/ATTiny-Widget
https://github.com/jonmash/ATTiny-Widget

Micro USB power input to two ATTiny MCU’s. There are two different ATTinys on this board. An ATTiny84 and an ATTiny85. These MCUs are great because they can be used with no additional components.  In fact, on this board, the only additional components are some filter capacitors for the power rail and a header for the programmer interface.

I have exposed an array of copper pads for every pin. This makes it easy to add LEDs or to wire to just about any sensor.

jonmash has shared the board on OSH Park:

ATTiny-Widget

7aed22f7c85b92483ec5460102d28735.png
Order from OSH Park

ATTiny-Widget

BFuse: Electronic Fuse for Breadboard

fustini, , , , , 1 Comment

bfuse02

created this solution to make breadboard prototyping safer for components:

BFuse – Electronic Fuse for Breadboard

adjustable and programmable electronic fuse especially designed for breadboards – a breadboard fuse, or BFuse

bfuse01

The trip current can be set from 50 mA to 1 A but it can measure current up to 6 A [..] It has reverse polarity protection (by P-FET), transient voltage suppressors both on its input and output and two LEDs for indication

bfuse_r1

Set current and actual current can be compared using ATTiny’s built-in comparator or sampled by the ATTiny’s ADC. Then, the microprocessor controls a P-FET switch that opens or closes the power supply
BFuse: Electronic Fuse for Breadboard

Low power Arduino Pro Mini board

fustini, , , , , , 1 Comment
3317771479151537261.JPGMax.K created this Arduino Pro Mini compatible development board for low power applications:

LP Mini

ideal for data logging over extended periods of time [..] can run for months or even years on a coin cell

9921941479300894867

Hardware

  • Microcontroller: Atmega328p with Arduino bootloader
  • Real Time Clock: MCP79410
  • Voltage Regulator: MCP1700
  • FDN340P MOSFET

Features

  • 2.8 µA current consumption in sleep mode
  • Compatible to the Arduino Pro Mini (except for pin 2 and 10)
  • A real time clock keeps the time and is used to wake the Atmega from sleep mode
  • Sleep current is reduced by using a more efficient voltage regulator
  • A simple Mosfet is used to turn external devices on and off if the IO pins cannot provide enough current
Low power Arduino Pro Mini board

Building an ATmega328 uploader

fustini, , , , , , Leave a comment

april-25-025-1024x768
Carlos of GlowSaber wrote a great blog post on how we built an AVR programmer shield:

Building an ATmega328 uploader

As I learned more about Arduino, I realized that it is possible to redesign the GlowSaber around the ATmega328 chip [..] I designed an Arduino Shield that can be used to burn the bootloader and upload programs to an ATmega328 chip.

http://www.glowsaberphysics.com/?p=171
http://www.glowsaberphysics.com/?p=171
http://www.glowsaberphysics.com/?p=171
http://www.glowsaberphysics.com/?p=171
http://www.glowsaberphysics.com/?p=171
http://www.glowsaberphysics.com/?p=171
http://www.glowsaberphysics.com/?p=171

Here’s a example of an ATmega328 in a custom board:

cvadillo shared the board on OSH Park:

Arduino ISP Breakout shared project

f86ae9c5963cb58ac72055506a12c0f0
Order from OSH Park

Building an ATmega328 uploader

Arduino Pro Trinket Bubble Display

fustini, , , , , , , , , , , , Leave a comment

6258141443734981847

davedarko wrote in his LED displays on Arduinos – a collection project log on hackaday.io:

Arduino Pro Trinket – bubble display

With 4 of HP QDSP-6064 bubble displays in a drawer I felt ready to do something with them and the “Clocks for Social Good” – call on hackaday.com finally got me going

7551951475502128886

The design files are available on GitHub:

images TrinketProShield_display

davedarko has shared the board on OSH Park:

ProTrinket Bubble Display shield

04bc624f503303d6e746bb4707c4a299.png

Order from OSH Park

Arduino Pro Trinket Bubble Display