This circuit powers an arm-mounted circular-saw that I developed for a mad doctor costume this last Halloween. Along with the spinning foam blade it also features a smoking effect, lights, and sound. It's all coordinated by an Arduino Nano mounted in this PCB.
**WARNING:** This board layout still has a bug in it. Two of the pins on the FQP30N06L mosfets are flipped. I let EasyEDA know about the...
To get rid of the many internal wires inside my grbl /driver switch box i decided to develop a complete solution with an arduino nano and optocouplers like shown on https://github.com/gnea/grbl/wiki/Wiring-Limit-Switches.
I want give the OK's a chance because of bad experiences with alarm triggers due electrical static or magnetism from other machines.
Also i plan to make a power distribution bo...
A game system with a hexagonal screen and a circle of buttons controlled by an arduino pro mini.
More info at: http://johan.vandegriff.net/hexagame/
Newer design: https://easyeda.com/jjvan/HexaGame_v2_0-0fb707684ff844ab90d4a03ce570e539
Контроллер для автоматического управления подсветкой на кухне. Автоматическое управление подсветкой реализовано с помощью датчика освещенности и ИК-датчика движения от охранной сигнализации.
Полное описание и прошивка доступны на сайте [Радиолоцман]
[Статья в журнале Радиолоцман]
Circuit for a project with a single "momentary" capacitive touch sensor. No microcontroller is required here - just power with 1.8 to 5.5VDC and touch the pad to activate the sensor.
When a capacitive load is detected (e.g. a person touches the sensor-pad area) the red LED lights up and the output pin goes high.
A custom shield for using a SIM800L-based GPRS transceiver to connect to the internet over GSM. This is designed to be driven by a SparkFun SAMD21 Mini board, and includes a 128x64 OLED display and an NRF24L01+ 2.4GHz RF module. It's powered by a lithium-ion battery (18650), and has a microSD port to archive data.