PM Soldering station

Project description

Poorman's Soldering Station is simple and accurate AVR-based soldering iron driver that can be built at a fraction of the cost of a commercial unit (please see project costs below). The firmware is open source, please feel free to improve or adapt it to your needs.


Presentation video





Building steps

1. Starting my first AVR project: Poorman's soldering station
2. The schematics / circuit diagram
3. Drawing the PCB
4. Problems: Measuring temperature and soldering iron efficiency
5. The firmware
6. Putting it all together
7. Final thoughts


Project costs:

Please not that the following table is by no means complete or 100% accurate, it's here just to help you make an idea on the final cost.

Component Cost (in Euro)
LM7805 0.15
LM7809 0.15
LM7909 0.15
Diode bridge 0.1
BT137 0.25
MOC3041 0.35
LCD 2x16 PC1602A 3.5
ATMEGA 328P 2.5
OP07 0.5
5v1 Zener DIP 0.01
1000uf 25v x 2 0.3
100nf DIP x 5 0.25
100uf 16v x 4 0.05
220r 0.5w x 2 0.02
fuse 1A 0.02
fuse holder 0.1
Transformer 24v 3A 8
Piezo speaker 0.5
10uf 16v x 2 0.05
100nf SMD x 6 0.5
100k multiturn x 2 0.5
1k 1% SMD 0.01
4k7 SMD 0.01
inductor 10 uH 0.25
backlight resistor SMD 0.01
microswitch x 4 0.01
510r x 2 SMD 0.02
5mm green led 0.01
5mm led holder 0.05
On / Off switch 0.25
Pin connector pair 1
DIN5 connector 0.25
Photo-resist coated copper clad board 100 x 160 mm 2
Heatshrink different sizes 1
1m of ribbon cable 1
ABS-85 plastic case 4
Soldering iron HQ-SOLDER/IR 8
bolts / nuts / washers 1

Total cost: 36.82 EURO