Hi
I am looking to build a basic heating system using the attached design. It incorporates a 555, a variable resistor, some diodes and other bits and pieces I don't understand but soon will.
The only problem is finding/making a board for it. I made a board in school once where we used some sort of pen to draw the outline and dipped the thing in acid.
With cost as main the limitation here, what is the easiest way to achieve my goal. Can I print my own board at a reasonable price (*C,%4[;;SRQFH49(&MA!W!?!(UJT%>+BS2KRX'"/.&8ME[8U9KLIBN/*S$/Q8+,$]>*MQRT1TE375/CP;Z*(9A85QC MI8-%&BNK[>)7%,:[EGMU142O_1.J2$WM-D8SSST3D4D%;;=$;>__31/*VD6E:,60S) M1,L8%JJ6N"Q)(MVXP((AR4,..B4K2\XV+ M(NZ4\J42T5F-KG.+HVAV.L7F@F5-7I$K:,W[RX(>CBH-]Z)S.T-3P4UG'0F77 M%"U'%H (1#W+LB[N5'WC5'8$=B;145(KDE3Y!2_QQTTTQ1M8P1NV$4W[,#Y0K+P**U4@SE\5#I#@HD,2,&S&,J>=%86%+ M])8E?:9O@E0@BJ%POU6.5B54.(-Q17.-(9&-UP1C]D(R^+@]+I1WY,&07D$Q ML3A1RI1J!E5IX988KY-V@W`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