Dual Dimmer SMD Reflow Oven (Part1)

When I design a circuit, I try to select SMD components for soldering advantages. Some components requires SMD stencil such as GSM modules, MCUs, etc.

I made a dimmable heater for solder PCB. But it has no safety for overheat. I should follow temperature with laser touchless temperature.

I decided to make this soldering autonomous. I started this project.

I will publish this project under three titles:

1) Hardware

2) Mechanic

3) Software

I should measure PCB temperature while heating it. I will use PT100 sensor to measure temperature.

I use two pieces - ceramic heater for PCB heating.

2 pieces BTA41-700 triac for dimming heater.

WH2004A 4-lines 20-chars LCD

Triac board can be ordered from PCBWAY.

MCU board:

https://www.pcbway.com/project/shareproject/W118076ASJ1_FD_DDIMM_MCU_R01___CADCAM.html

Triac board:

https://www.pcbway.com/project/shareproject/W118076ASJ5_FD_DDIMM_DRV_R01___CADCAM.html