0

Hack a Toaster Oven for Reflow Soldering

Hack a Toaster Oven for Reflow Soldering. Frank writes –

As I get more serious into my electronics hobby, I need to work with more SMD components. Some component packages are very difficult or impossible to solder with a traditional soldering iron. To solve this problem, I decided to hack a toaster oven to become a reflow soldering oven.

Basically, to perform reflow soldering, solder paste is placed on a printed circuit board, and the components to be soldered is placed on top of the solder paste. When the oven heats the solder paste past the melting temperature, the solder paste melts and solders the component to the circuit board.

To control the oven’s temperature, I created my own reflow toaster oven controller circuit. This circuit uses an ATmega32U4 microcontroller to monitor the oven’s temperature using a thermocouple and AD595AQ, and then control the oven’s heating element using a solid state relay. The controller features USB logging/debugging, USB bootloading, a graphic LCD display, and 3 buttons. The firmware features tweaking for all settings, manual temperature control, manual heating element control, and automatic temperature profile control (with a nice temperature history graph display). This circuit will plug into a wall outlet, and the oven will plug into this circuit, while the solid state relay basically acts as a switch between the wall outlet and the oven’s heating element. Safety is the main design objective (but some things were limited by cost), and ease of use is the second objective.


Join 5,000+ makers on Adafruit’s Discord channels and be part of the community! http://adafru.it/discord

CircuitPython in 2018 – Python on Microcontrollers is here!

Have an amazing project to share? Join the SHOW-AND-TELL every Wednesday night at 7:30pm ET on Google+ Hangouts.

Join us every Wednesday night at 8pm ET for Ask an Engineer!

Follow Adafruit on Instagram for top secret new products, behinds the scenes and more https://www.instagram.com/adafruit/


Maker Business — The first step in making: a PCB

Wearables — Try maximum twinkling

Electronics — Behold…the power of pseudocode.

Biohacking — All Day EEG Recording Tools

Python for Microcontrollers — PyCon US 2018 Rocked!

Get the only spam-free daily newsletter about wearables, running a "maker business", electronic tips and more! Subscribe at AdafruitDaily.com !



2 Comments

  1. Hi AdaFruit,

    Could you please fix your method of embedding YouTube? Your method prevents YouTube from being able to negotiate the right video formats. By hardcoding the SWF embed, you push Flash objects to platforms which do not support it (like Google Chrome, Android, etc).

    If you use YouTube’s recommended method of embedding – the IFRAME – then it works perfectly on ALL platforms, with no downside. That’s actually what the original article @ Instructables does.

    thanks!

  2. @scott, thanks again for posting about this – no need to post it on multiple posts and places, it’s on our list. thanks!

Sorry, the comment form is closed at this time.