[Tim]’s Dice10 is an exercise in minimalism. [Tim] upped the game by using just two GPIO pins to drive the seven LED’s for the dice
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
jonmash designed this simple board with two ATTiny processors powered by a micro USB connector.
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:
Jakub Polonský created this solution to make breadboard prototyping safer for components:
adjustable and programmable electronic fuse especially designed for breadboards – a breadboard fuse, or BFuse
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
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