Tag Archives: arduino nano

Small-scale Nano setup with pullup inputs and CR2032 batteries

via Arduino Blog

Arduino boards are used in a wide—massive even—variety of projects. Sometimes, however, all you need is something to give your project the ability to blink an LED, sound an alarm, or accomplish some other simple task. 

For this purpose, maker Jeremy S. Cook has developed a sort of standard method for using these devices, with a 4-position DIP switch soldered to inputs D9-D12, and a double-CR2032 battery pack attached with shrink wrap.

This standardization makes for a very compact setup that can be implemented in a project very quickly. The configuration also highlights the use of “INPUT_PULLUP” in Arduino code, with switches wired to ground. Cook’s technique avoids floating inputs without the need for external resistors.

LoraDunchy Arduino Nano pin-compatibile LoRa module with power management

via Dangerous Prototypes

board

Mare writes:

Lora board with Arduino nano compatibile pinout and simple battery management
Small board with arduino nano compatibile pinout with power management and Murata ABZ LoRa module with STM32L0 microcontroller
Features:
-LoRa module: Murata ABZ
-Single cell LiPo cell charger on-board with charging signal internally connected to PA11 (via jumper)
-Buck/Boost switching power supply for delivering stable 3,3V regardless of the batterz voltage
-Battery fuel gauge on-board to control the real status of the battery

See the full post on Mare & Gal Electronics blog and the GitHub repository here.