T-962A Reflow Oven
| T-962A Reflow Oven | |
|---|---|
| Manufacturer | PUHUI (?) |
| Model | T-962A Reflow Oven |
| AKA | Cookie |
| Obtained | Pledge Drive (Jan 2025) |
| Location | Electronics Area |
| Team | Electronics |
| Induction Required | No |
| Tools: all pages • list • Power Tools • Broken tools {{}} | |
As part of the 2025 Electronics Pledge Drive, a T-962A reflow oven was purchased. It hasn't arrived yet, so this page is just a stub.
Process
The machine hasn't arrived yet, so we don't know.
Oven Improvements
There are a number of recommended improvements to make to this oven. We should make some or all of those improvements. Note that this is the "New 2022 Version", which is (unsurprisingly) newer than the "New 2020 Version" - both of these should be better than the original T-962 model. There's a good list of suggested modifications over on Hackaday.io.
- Replace the firmware. Unified Engineering have developed an alternative firmware for this machine, which enables the use of a third thermocouple to measure ambient temperature. Given how much the temperature fluctuates in the space, this is probably worth it. The stock machine will assume that ambient temperature is 20c, and we know that's rarely true! https://github.com/UnifiedEngineering/T-962-improvements.
- The firmware supports the use of a DS18B20, using a spare GPIO pin of the MCU. Some instructions for doing this are here: https://github.com/UnifiedEngineering/T-962-improvements/wiki/Dallas-18B20-for-cold-junction-mod
- The firmware flashing may need a Windows PC. https://github.com/UnifiedEngineering/T-962-improvements/wiki/Flashing-the-LPC21xx-controller
- Replace the masking tape. Apparently there is some masking tape used to hold down the fibreglass insulation. This starts to burn and causes a nasty smell. A better option is to use Kapton tape. It's possible the 2022 version no longer does this, but we'll check.
There are also claims that the grounding isn't very good. We will check this with the PAT machine and repair if necessary.