The reflow oven controller shield has been running dry in stock for a month or so. We decided to make some small improvement and most importantly, reducing the cost along the way. We managed to squeeze the price down to USD39 from USD43. Some of the changes in the design includes:
- All through hole header pads annular ring is enlarged to facilitate easier soldering.
- Change of some component package to streamline with other product component usage to reduce overall cost and minimize inventory size (Octopart rocks!).
- Added 2 current limiting resistor to drive the SSR. Good quality SSR usually comes with built-in current limiting resistor but we added them just in case you are using one without the current limiting resistor.