555 soldering station

http://www.falstad.com/circuit/#%24+1+5.0E-6+5.023272298708815+64+7.0+50%0Aw+304+144+272+144+0%0Aw+272+240+304+240+0%0Ag+272+304+272+320+0%0Aw+272+80+368+80+0%0AR+272+80+208+80+0+0+40.0+10.0+0.0+0.0+0.5%0AO+432+176+496+176+0%0A165+304+112+320+112+2+10.0%0Aw+368+80+432+80+0%0Ap+368+272+448+272+0%0Ag+448+272+496+272+0%0Ag+208+176+176+144+0%0Ap+208+176+272+208+0%0Aw+432+80+432+144+0%0Ag+272+144+272+160+0%0Aw+272+208+272+240+0%0A172+368+272+368+368+0+6+2.7+5.0+0.0+0.0+0.5+Voltage%0A172+272+240+160+240+0+6+0.4+5.0+0.0+0.0+0.5+Voltage%0Aw+304+144+304+160+0%0Aw+304+160+304+208+0%0Ao+5+32+0+42+10.0+9.765625E-5+0+-1%0Ao+8+64+0+34+5.0+9.765625E-5+1+-1%0Ao+11+64+0+34+2.5+9.765625E-5+2+-1%0A

http://www.falstad.com/circuit/#%24+1+5.0E-6+5.023272298708815+64+7.0+50%0Aw+512+240+480+240+0%0Aw+480+336+512+336+0%0Aw+480+176+576+176+0%0AR+480+176+416+176+0+0+40.0+10.0+0.0+0.0+0.5%0AO+640+272+704+272+0%0A165+512+208+528+208+2+10.0%0Aw+576+176+640+176+0%0Ap+576+368+656+368+0%0Ag+656+368+704+368+0%0Ag+416+272+384+240+0%0Ap+416+272+480+304+0%0Aw+640+176+640+240+0%0Ag+480+240+480+256+0%0Aw+480+304+480+336+0%0Aw+512+240+512+256+0%0Aw+512+256+512+304+0%0Aw+480+176+480+112+0%0Aw+480+112+320+112+0%0Aw+320+352+320+416+0%0Ag+576+416+576+432+0%0Ar+464+416+576+416+0+500000.0%0Ar+576+464+464+464+0+500000.0%0Ag+576+464+576+480+0%0Aw+464+464+448+464+0%0A174+448+464+320+432+0+500000.0+0.5+Thermistor%0A174+464+416+400+400+0+500000.0+0.5+Temperature+set%0Aw+320+416+384+432+0%0Aw+464+464+496+368+0%0Aw+496+368+576+368+0%0Aw+464+416+480+336+0%0Aw+432+400+320+352+0%0Aw+320+352+320+112+0%0Ao+4+32+0+42+10.0+9.765625E-5+0+-1%0Ao+7+64+0+34+10.0+9.765625E-5+1+-1%0Ao+10+64+0+34+20.0+9.765625E-5+2+-1%0A

$ 1 5.0E-6 5.023272298708815 64 7.0 50
w 592 192 560 192 0
w 560 288 592 288 0
w 560 128 656 128 0
R 560 128 496 128 0 0 40.0 10.0 0.0 0.0 0.5
O 720 224 784 224 0
165 592 160 608 160 2 10.0
w 656 128 720 128 0
p 656 320 736 320 0
g 736 320 784 320 0
g 496 224 464 192 0
p 496 224 560 256 0
w 720 128 720 192 0
g 560 192 560 208 0
w 560 256 560 288 0
w 592 192 592 208 0
w 592 208 592 256 0
w 560 128 560 64 0
w 560 64 400 64 0
w 400 304 400 368 0
g 512 464 512 480 0
174 464 416 400 400 0 500000.0 0.47030000000000005 Temperature set
w 576 320 656 320 0
w 400 304 400 64 0
r 480 320 480 368 0 500000.0
w 400 368 400 384 0
g 480 368 480 384 0
w 480 320 560 288 0
w 576 320 512 416 0
r 512 416 512 464 0 500000.0
w 464 416 512 416 0
w 432 400 432 384 0
w 432 384 400 384 0
174 416 320 480 320 0 500000.0 0.48020000000000007 Thermistor
w 448 304 448 288 0
w 400 304 400 288 0
w 400 288 448 288 0
o 4 32 0 42 10.0 9.765625E-5 0 -1
o 7 64 0 34 10.0 9.765625E-5 1 -1
o 10 64 0 34 20.0 9.765625E-5 2 -1