DICE10: electronic dice controlled by two GPIO

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

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

images1ATTiny-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

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Order from OSH Park

ATTiny-Widget

BFuse: Electronic Fuse for Breadboard

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