DIY JBC 245 Soldering Iron Controller (Beta WIP)

5 months ago 361
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DIY JBC 245 Controller (not tested yet)

Wich can be powered with a standart 19V DC laptop charger.

The project based on the Atmel328 μc, and i try makes simple as i can. The first problem driving a jbc tip is the thermocouple and the heater have a common pin and its not the GND. On some forum i found the easyest way to do is just siple pass the heater current on the thermocupple but thats shorter the tip's life, so thats not an option for me.


In my solution i planned to use a DC-DC isolator for the μc and an optocoupler to control the P channel mosfet.

To makes it work you need a 10k pot and a 1602 I2C LCD (not shown on the schematics)


As enclosure i design the simplest, one of my friend bethlenke is kind enough to 3D model & 3D printed for me

The software still in WIP

  • modell for 3D printing : {LINK}

Update 0: Parts ordered and waiting for arrive.


Soldering station sch



ID Name Designator Footprint Quantity Manufacturer Part Manufacturer Supplier Supplier Part Price LCSC Assembly Mounted BOM_Supplier BOM_Manufacturer BOM_Manufacturer Part BOM_Supplier Part BOM_LCSC Assembly
2 16mhz X1 HC-49SMD 1 LCSC ZheJiang East Crystal Elec C16000J119 C259047
3 22pF C1,C2 0805 2 LCSC WTC 0805N220J500 C123642
4 1K R1 0805 1 LCSC FH RS-05K1001FT C115316
5 B0505S-1WR3 U2 DIP-11.6X6.0X10.16 1 LCSC MORNSUN B0505S-1WR3 C131038
6 Programing P1 HDR-6X1/2.54 1 LCSC BOOMELE Header-Male-2.54_1x6 C37208
7 PC817X3NSZ9F U3 DIP-4 1 LCSC SHARP PC817X3NSZ9F C96006
8 IRF9540 Q1 TO-220(TO-220-3) 1 LCSC IR IRF9540NPBF C2575
9 10K R2 0805 1 LCSC UniOhm 0805W8F1002T5E C17414 Yes
10 330 R3 0805 1 LCSC FH RS-05K331JT C119075
11 MAX6675ISA+T U4 SOIC-8_150MIL 1 LCSC MAXIM MAX6675ISA+T C16030 Yes
12 1uF C3 0805 1 LCSC YAGEO CC0805KKX7R8BB105 C91186
13 POT P2 HDR-3X1/2.54 1 LCSC BOOMELE Header2.54mm 1*3P C49257
14 LCD P3 HDR-4X1/2.54 1 LCSC ReliaPro Header-Female-2.54_1x4 C124413
15 VIN P5 WJ500V-5.08-2P 1 LCSC ReliaPro WJ500V-5.08-2P-14-00A C8465
16 Iron P4 WJ500V-5.08-3P 1 LCSC ReliaPro WJ500V-5.08-3P-14-00A C72334
17 LM7805EE U5 TO-220 1




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