Being able to PWM the built-in fan would make that radically easier.įinally, I’d want to permanently install an ft232 (or BT?) on that UART so I can just load up a serial terminal to drive the thing. I’ve resorted to putting a separate fan behind the unit to and carefully adjusting the distance to get enough airflow moving without screwing up the ability of the system to heat up. Without that kind of airflow, the heat applied to boards is *extremely* uneven. The next thing would be to utilize the firmware framework to add PWM to the cooling fan so that it can sustain a low airflow through the oven cavity. I should be able to hook a dryer duct to the back of the unit and exhaust everything outside, but not without reversing the fan. It’s absolutely stupid that the cooling fan pushes air through the unit and out the bottom, because that also pushes the fumes out the same way. There are a lot of changes I want to make to the unit, and now that somebody’s done the base work of tracking down all the pins there’s a lot of enhancements that could be made:įirst off would be to get deep enough into it to reverse the flow of the cooling fan. I’ll have to keep this in mind for next time I need to use my oven. Posted in Repair Hacks, Slider, Tool Hacks Tagged firmware, reflow, reflow controller, reflow oven, T-962, tool Post navigation A much better solution than ripping out the controller and replacing it with a custom one. The temperature sensor is placed right next to the terminal block for the thermocouples for proper temperature sensing.Īll the details of updating the firmware appear on a wiki, and the only thing required to update the firmware is a serial/USB/UART converter. The controller sits on top of an oven with two TRIACs nearby, so this isn’t the case, making the temperature calibration of the oven slightly terrible.Īfter poking around the board, found an LPC2000-series microcontroller and a spare GPIO pin for a 1-wire temperature sensor. The new firmware uses the existing hardware and adds a very necessary modification: stock, the oven makes the assumption that the cold-junction of the thermocouples is at 20☌. This is not in true hacker fashion – there’s already a microcontroller and display on the board. bought his T-962A even after seeing some of the negative reviews that suggested replacing the existing controller and display. It’s open source, and the only thing you need to update your oven is a TTL/UART interface. The controller for this oven is downright terrible, and has been working on a replacement firmware for the horribly broken one provided with this oven. It’s pretty cheap, and therefore popular, and the construction actually isn’t abysmal. To learn more about how and for what purposes Amazon uses personal information (such as Amazon Store order history), please visit our Privacy Notice.The T-962A is a very popular reflow oven available through the usual kinda-shady retail channels. You can change your choices at any time by visiting Cookie Preferences, as described in the Cookie Notice. Click ‘Customise Cookies’ to decline these cookies, make more detailed choices, or learn more. Third parties use cookies for their purposes of displaying and measuring personalised ads, generating audience insights, and developing and improving products. This includes using first- and third-party cookies, which store or access standard device information such as a unique identifier. If you agree, we’ll also use cookies to complement your shopping experience across the Amazon stores as described in our Cookie Notice. We also use these cookies to understand how customers use our services (for example, by measuring site visits) so we can make improvements. We use cookies and similar tools that are necessary to enable you to make purchases, to enhance your shopping experiences and to provide our services, as detailed in our Cookie Notice.
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