Circuit library

rpic -c loads a native library of 79 circuit elements — a from-scratch re-imagining of Dwight Aplevich’s celebrated circuit_macros, written in pure pic (no m4). Two-terminal elements take two points; centered devices take one and expose their terminals as variables.

.PS
SW:(0,0); NW:(0,1.2); NE:(2.4,1.2); SE:(2.4,0)
battery(SW,NW); resistor(NW,NE); capacitor(NE,SE); inductor(SE,SW)
dot at NW; dot at NE; dot at SE; dot at SW
.PE

A figure can also declare the dependency itself with the reserved include copy "circuits" — the in-source spelling of -c, just as texlabels = 1 is the in-source spelling of -t. No flag needed, in any binding, wasm included (this example is compiled without -c):

.PS
copy "circuits"
A:(0,0); B:(1.6,0)
led(A,B)
.PE

Two-terminal elements

resistor, capacitor, inductor, battery, diode, led, fuse, switch, sources, meters… — each draws between two named points, wiring included:

.PS
texlabels = 1; margin = 0.08
A:(0,0); B:(1.3,0); C:(2.6,0)
resistor(A,B); "$R$" at 0.5 between A and B + (0, 0.4)
diode(B,C);   "$D$" at 0.5 between B and C + (0, 0.4)
.PE

Logic gates

Distinctive and IEEE styles; gates take a center point and export their terminals (gA_x/gA_y, gB_…, gY_…) as variables:

.PS
P:(0.5,0); and_gate(P)
Q:(1.9,0); nand_gate(Q)
R:(3.3,0); xor_gate(R)
"AND" at (0.5,-0.55); "NAND" at (1.9,-0.55); "XOR" at (3.3,-0.55)
.PE

Multi-terminal devices

Transistors, op-amps and gates take a center point and export their terminals as variables (gBase_*, gColl_*, gEmit_*, gA_*, gY_*…):

.PS
margin = 0.08
npn((0,0))
line left 0.3 from (gBase_x, gBase_y); "B" rjust at last line.end - (0.04, 0)
line up 0.25 from (gColl_x, gColl_y); "C" above at last line.end
line down 0.25 from (gEmit_x, gEmit_y); "E" below at last line.end
.PE

The circuit_macros compatibility shim goes further and wraps devices as blocks exposing pins as labels (Q1.B, Q1.C, Q1.E) — reading its source is a masterclass in block composition.

With texlabels

Circuit figures traditionally carry math labels — combine with texlabels:

.PS
texlabels = 1; margin = 0.08
A:(0,0); B:(1.4,0)
resistor(A,B)
"$R_1$" at 0.5 between A and B + (0, 0.3)
"$v_{in}$" at A - (0.25, 0)
.PE

The full element list lives in the library source; the gallery of 48 circuit_macros figures shows it at full power. There is also a small 3D projection library (setview/Project) for axonometric drawings.