Reflowduino: Put That Toaster Oven To Good Use

From  on the Hackaday blog:

Reflowduino: Put That Toaster Oven To Good Use

There are few scenes in life more moving than the moment the solder paste melts as the component slides smoothly into place. We’re willing to bet the only reason you don’t have a reflow oven is the cost. Why wouldn’t you want one? Fortunately, the vastly cheaper DIY route has become a whole lot easier since the birth of the Reflowduino – an open source controller for reflow ovens.

This Hackaday Prize entry by [Timothy Woo] provides a super quick way to create your own reflow setup, using any cheap means of heating you have lying around. [Tim] uses a toaster oven he paid $21 for, but anything with a suitable thermal mass will do. The hardware of the Reflowduino is all open source and has been very well documented – both on the main hackaday.io page and over on the project’s GitHub.

sidekick-e1525981389910

The board itself is built around the ATMega32u4 and sports an integrated MAX31855 thermocouple interface (for the all-important PID control), LiPo battery charging, a buzzer for alerting you when input is needed, and Bluetooth. Why Bluetooth? An Android app has been developed for easy control of the Reflowduino, and will even graph the temperature profile.

When it comes to controlling the toaster oven/miscellaneous heat source, a “sidekick” board is available, with a solid state relay hooked up to a mains plug. This makes it a breeze to setup any mains appliance for Arduino control.

 

Reflowduino: Put That Toaster Oven To Good Use

PDX Raspberry Pi and Arduino Meetup

There is a new PDX Raspberry Pi and Arduino meetup organized by hosted by Mitch Bayersdorfer coming to Portland on Saturday, April 7th:

Initial Meeting – Show and tell, build and chat.

Saturday, Apr 7, 2018, 1:00 PM

No location yet.

10 Open Source HW Enthusiasts Attending

• What we’ll do Part social and part build time, this meet-up is for those • What to bring Computer. Raspberry Pi and/or Arduinos if you have them. Projects that you want to share. Items for the “parts luck” swap bin. • Important to know The shop where this is held only has space heaters – so please dress warmly on colder days. On very cold days, w…

Check out this Meetup →

• What we’ll do:

Part social and part build time, this meet-up is for those

• What to bring

Computer. Raspberry Pi and/or Arduinos if you have them. Projects that you want to share. Items for the “parts luck” swap bin.

• Important to know

The shop where this is held only has space heaters – so please dress warmly on colder days. On very cold days, we will forego building and have a social in a heated space, if we can’t find an alternative spot.

PDX Raspberry Pi and Arduino Meetup

LTE Arduino GPS Tracker and IoT Dashboard

Timothy Woo shows how to make a powerful Arduino GPS tracker that posts data to the cloud via LTE and view data graphically on IoT dashboards:
7510911513094940025

LTE Arduino GPS Tracker + IoT Dashboard

Hey guys! In this tutorial we’ll be creating a GPS tracker using the Botletics SIM7000 LTE shield and an Arduino and view the data on two free IoT dashboards. I’ll start off by explaining how to get everything set up and posting data to the cloud, then I’ll move into how to set up the IoT dashboards to view data. The two dashboards we will be looking at are Freeboard.io and ThingsBoard.io.

Since this tutorial is a follow-up of my first Instructable on using the Botletics LTE/NB-IoT shield for Arduino so if you haven’t already, please read it to get a good overview of how to use the shield and what it’s all about. In this tutorial I’ll focus on IoT data logging, and specifically, GPS and temperature tracking and provide you will all the code and guidance you’ll need to hit the road and test it out! It’ll be a decently lengthy tutorial so sit tight and grab some coffee!

Although I’ll be mainly focusing on the LTE shield that I personally designed and built, everything here (including the Github Arduino library) should work on SIMCom’s 2G and 3G modules like the SIM800/808/900/5320 as well since it’s just an updated version of the Adafruit FONA library. Regardless of hardware the concept is exactly the same and you can do lots of cool stuff with this, including sensor data logging, remote weather monitoring, auto theft karma GPS tracking, etc… so read on!

LTE Arduino GPS Tracker and IoT Dashboard

Rotary Encoder with I2C Interface and RGB Lighting

From on the Tindie blog:

encoder

Rotary Encoder with I2C Interface and RGB Lighting

Makernet Knob’s makes the point that “Rotary encoders are cool but hard to wire into your projects.” Having wired up a custom input device for my computer using an encoder, I can attest to both of these statements. In my case, it took me quite a bit of time simply to figure out how each encoder pin was used!

 

Rotary Encoder with I2C Interface and RGB Lighting

Reflowduino: Circuit Board Assembly for Everyone

Timothy Woo has launched a Indiegogo campaign to manufacture his open-source, Arduino-compatible, wireless PCB reflow oven controller:

vwqlvw1alqs19g9mq16x.jpg.png

Reflowduino: Circuit Board Assembly for Everyone!

Reflowduino is the first completely open-source, Arduino-compatible reflow oven controller of its kind that enables practically anyone to assemble their own beautiful circuit boards at home!

Reflowduino comes loaded with features, all in a compact Arduino-compatible package, with full documentation, example code, demo app, and comprehensive wiki on Github.

ecriw1wwk9mpio5pmbz4

Reflowduino is designed to be extremely easy to use! The general concept is to switch the power of the appliance on or off with a solid-state relay as shown below, measuring the temperature by placing the thermocouple tip inside the oven during the whole process.

If nothing else, please share this campaign to your friends, family, and anyone who might be interested on social media! Remember that every view counts for me, and I’m depending on you to make this happen!

arynyhrvcfd87k9omiwx

Reflowduino: Circuit Board Assembly for Everyone

LTE NB-IoT Shield for Arduino

From Timothy Woo on Hackaday.io:

8302141510267404941.jpg

LTE NB-IoT Shield for Arduino

This open-source LTE shield uses SIMCOM’s SIM7000-series modules with the latest LTE CAT-M technology to allow Arduino users to painlessly connect their low-power IoT devices with the next-generation cellular technology!

6990071510267413269

NB-IoT is also available for many countries (but sadly not in the USA yet) simply by swapping out to a different SIM7000 module version. Luckily SIMCOM made it super easy to integrate this module because most of the AT commands are identical to previous version, and Adafruit has a wonderful library for their FONA 2G and 3G products. Check it out and help make this happen!

3454341510977654311

You can view the latest code and design files here on my Github page: https://github.com/botletics/NB-IoT-Shield. Note: The hardware works great but software is still under development! I plan on launching an Indiegogo campaign when I get a fully-working prototype, so stay tuned for updates!

LTE NB-IoT Shield for Arduino

Arduino Neural Network Robot

Sean Hodgins created an Arduino-based robot that avoids light by navigating using a neural network:
4863551509384902904
This project is meant to teach about utilizing neural networks in robotic platforms. There will be a 3 part video series on the Make YouTube channel on building the robot. It will start with prototyping and design, then move onto assembly and testing, and finally programming and running the neural network. You will be able to follow along and make your own robot in the end.

Part 2: Soldering and Assembly

 

 

Arduino Neural Network Robot