Toaster reflow oven controller. Abandoned project due to some bugs and safety.
##Usage
Put boards with solder paste in the oven. Press the red button. When the led switches off you can take the boards out or something.
##About
Schematic is in KiCad. Schematic idea is from ST app note "MICROCONTROLLER AND TRIACS ON THE 110/240V MAINS". Reflow profile.
Uses weird temperature sensor. Heats boards to 150 degrees (1.3 kΩ, 3.143V, 41200), keeps there for 1m 10s and heats it up to 220 degrees (1.8 kΩ, 2.75V, 36000) 1m 30s.
| Part | Value | Pack | Farnell Code |
|---|---|---|---|
| Attiny13 | SO8 | 1704567 | |
| Temp sensor | DO-34 | 1672407 | |
| The button | 1634684 | ||
| Screw terminal | 3x3.5 mm | 3882627 | |
| TRIAC | 4A | DPAK | 1757884 |
| X1 capacitor | 100 nF | 1907253 | |
| Fuse | 4A | 1829558 | |
| Diode | 8150206 | ||
| Reservoir capacitor | 100 µF | 5mm | 9452354 |
| Zener diode | 5V1 | SOD323 | 8735735 |