Support for a 5V DC fan to improve final stage cool-downĪddition header on the PCB for future expansion or modding include The Reflow Master is powered by a 5V Micro-B USB port, that also allows for re-programming via the Arduino IDE. The heart of the Reflow Master is a SAMD21G micro-controller running my own custom (NON PID) codebase. Also, who want's to sit around watching every board reflow? With Reflow Master just put your board(s) in, press start and work on something else until it beeps! The solder paste manufacturers spend a lot of time formulating their chemical compositions and graphs to ensure the best results. That's what I used to do, but I also used to spend quite a bit of time trouble shooting my boards afterwards. Can't I just crank up my oven and pull the PCB out once it's reflowed? The oven I use is no longer available for purchase, but here is a similar oven that's a bit smaller than what I use, but seems quite adequate: Having a smaller and more powerful oven is the safest bet. The smaller the oven, the faster it will heat, just like the higher the power, the faster it will heat. You MIGHT still get a successful reflow, but it will likely be out of the guidelines from your solder paste manufacturer - so you'll need to check your specifications for your paste to assess the repercussions. If your oven is too big or under powered, or both, then your oven will not be able to get to the initial profile temperature in time to allow for an adequate pre-soak time. What toaster oven do I need?įrom my own experience and from working with other makers that use both toaster ovens and my Reflow Master, there are 2 key requirements for a toaster oven to be usable as a reflow oven: It needs to be small and powerful - so ideally you want an oven that is 18 Litres or lower in capacity, with 1300W or higher in power. Īlso, if you plan on reflowing high temperature pastes 190deg+, I'd definitely recommend a glass shielded thermocouple to ensure the probe shield can withstand the 200deg+ temperatures required for reflow. If that is the case, you might want to invest in a better thermocouple, something that is really well shielded in metal or glass, like one of these. Yes, the K-Type thermocouple I supply is good enough for most environments and use cases, but if you are using your Reflow Master in an area that suffers from high frequency noise from power or mobile antennas etc, you may get some extra noise in your temperature readings. Is the provided Thermocouple good enough? This is the SSR that I use ( 15A Model ): I could supply something I am prepared to endorse & support, but it would be considerably cheaper for you to source one yourself - rather than me buy one and reship it to you. I don't feel comfortable supplying a generic "Chinese unbranded SSR" that might be unreliable or inadequate for your specific use case. Every toaster oven is different and mains power is obviously not universal and is dangerous to play with. Why don't I provide the Solid State Relay? You can also have me print you a case for your Reflow Master - Just select the case option above. You own case or you can 3D print the original case from the provided STL files Micro-B USB cable and power source (5V DC) Solid State Relay (SSR) ( 3V+ DC 100/240V AC ) You will need to provide the following items to connect to your oven and Reflow Master: What else do I need to use the Reflow Master? I've added a bake mode to Reflow Master which you can use to dry your 3d printer filament, bake your RGB LEDs or dry your PCBs after they've been ultrasonically cleaned!Ĭheck out the new Bake feature in this videoĪ fully assembled and tested Reflow Master PCBĤ included reflow profiles (138d, 183d Short, 183d long and 187d) It comes with a small selection of built in solder paste profiles, and due to it's open source nature (both hardware and software) you are able to add your own profiles in code and re-flash Reflow Master to suit your needs using the USB connector and the Arduino IDE. and so I kept refining and now it's an easy to use, intuitive and reliable reflow controller for a toaster oven or other element controlled reflow system.Īpart from being totally Open Source, it's killer features are it's easy to use interface and beautiful reflow graph. I've had a lot of interest shown on my youtube channel from other makers and electronic hobbyists, with a few asking to buy a finished version. I made Reflow Master for my own toaster oven, and the project took off from there. If you need your Reflow Master sooner, please choose a faster shipping method at checkout Reflow Master includes FREE Standard Shipping - Standard Shipping is currently experiencing long delays.
0 Comments
Leave a Reply. |