5 LDO regulator considerations other than voltage and current

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James Lewis over at Bald Engineer writes, “For an AddOhms series, I created a DIY Arduino I am calling the “Pyramiduino.” It is an ATmega328p based board in the shape of a triangle. Other than being cute, the shape does not offer any other benefit. The design features a 3.3 volt LDO Regulator, which is also the subject of this post.”

More details on Baldengineer’s tutorial page.

NickelBot – Laser controller

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bdring made this laser controller for his wooden nickel engraver project and wrote a post on his blog detailing its assembly:

Here are some details on the custom laser controller I made for the NickelBot, wooden nickel engraving machine.
I want to use Grbl to control the machine. Grbl has support for lasers that allows better power control during the engrave. It also has the Core XY support I need for the H-bot mechanism it uses. The only feature I needed that it did not have is a hobby servo output.

More details at Buildlog.Net blog.

The AAduino

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Johan Kanflo has a new project posted the AAduino, that is available on Github:

The AAduino is an wireless Arduino clone the size of an AA battery with Keystone battery terminals rotated 180° to act as positive and negative terminals. It is powered by an ATMega328p and is fitted with an RFM69C companion. There is room for two DS18B20 temperature sensors and an indicator LED.

Project info at Johan Kanflo’s blog.

mavroOBD, an open source Arduino compatible OBD/Can-Bus module

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Mavromatics’ open source project designed to “hack” your vehicle, that is available on github:

The goal of this project it to create an Arduino based OBD port module that can be used to enhance a vehicles capabilites. For example, if you want door locks to close when moving faster than 5mph or to invoke/emulate certain CANbus buttons automatically at start up.

Project info at Mavromatis’ blog.