6/2/2023 0 Comments Small reflow oven![]() You should consider soldering jumper pins or cables to the motherboard to make this easier.6 - Optional - Connect an ESP WiFi board to the firmware update and reset pins so you can fully control and monitor the oven remotely.In short. Specifically:1 - Fix earth wire contact and add earth cable link to top part of case.2 - Replace "stinky" white masking tape around the oven base with Kapton tape.3 - Solder a "cold junction" thermistor to the motherboard to fix temperature sensor accuracy (critical for consistent reflows!).4 - Replace the fan with a quiet version (original is VERY noisy) and solder PWM cable to free GPIO pin on board so it can be intelligently controlled (switched off when not needed).5 - Load the upgraded firmware (Unified Engineering or SmashCat) to enable the enhanced cold junction, fan control and other features. But you MUST follow the many online videos and blogs about how to upgrade it for safety and accuracy. Overall, provided you are willing to mess around with it, and provided you are not trying to use it professionally or with extra-sensitive components, then you can get it to work pretty well and it's good value for money.īasically this is the only way you can get a decent SMD reflow oven at this price range. 5) raise the PCB above the metal shelf slightly so the shelf doesn't cool the board. It seems to interpolate for the intervening times. You tell it what temperature to be at for every 10 seconds. 4) to set a user profile, go to the profile, press for DEtails and then press (S). 3) connect a cheap aluminium foil pipe between the fan output and an open window. ![]() 2) while it's open, change the masking tape for Kapton tape, including under the front of the insulation (it's easy to do). I have not flashed the firmware or any other major modifications - that may help, and there are lots of YouTube videos about it.Ī few tips: 1) open it up and remove the paint between the earth wire and the chassis (or at the very least, use it with an RCCB). It's tricky, because the board temperature depends on things like board size, number and size of components, room temperature and, to some extent, randomness. I found the presets for lead-free got too hot, so spent quite a while setting up a good profile (thermocouples on an empty PCB plus trial and error). This oven comes with several preset temperature profiles, plus two you can set up yourself. Alternatives are a hotplate (requires a lot of skill/practice to get consistent results) or a convection/conveyer oven (if you have several thousands to spare or a company budget). With this type of oven (basically, a grill), it's difficult to do that. The thing with lead-free solder is that it doesn't flow well below about 240C, but components can get damaged above about 255-260C (or, in some cases, 245C), and an oven only has a short time to get the temperature right. It is the ideal rework solution from single runs to on-demand small batch production. 【EXTENSIVE APPLICATION】- The T962A reflow soldering machine can solder most PCB boards small parts, for example, CHIP, SOP, PLCC, QFP, BGA, etc. ![]() The outside-load operation panel of the SMT reflow oven avoids the high temperature in the panel, ensuring stability and safety.
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