OhmScript

OhmScript is a interpreted scripting language to help you calculate the equivalent resistance of multiple resistors.

Syntax

This is an example OhmScript:

R1 = 1k
R2 = 220
R3 = 300

? = //(R1,R2, R3)

R4 = 100k
? = //(R2, ->(R3, R4), R3)

This prints 112.62798634812287 and 126.76266707517904

There are just a few operators in OhmScript:

• =: this is the assign operator. It binds a name to a value.
• ?: this is a special name, everything assigned to it gets evaluated and printed.
• //: this is the parallel operator. //(R1, R2) is equivalent to $\frac{R_1 \cdot R_2}{R_1 + R_2}$.
• ->: this is the series operator. ->(R1, R2) is equivalent to $R_1 + R_2$.

In OhmScript, instead of writing A = 225000, you can use the k shorthand: A=225k.

How to use it

Important

You must have the rust language installed on your system

Using OhmScript is as simple as:

git clone https://github.com/TheCaptainCraken/ohmscript
cd ohmscript
cargo run

At this point you should see the prompt:

Ohm >

Just start typing!

Future additions

These are features I'll implement if I get to work on this again.

• Better error handling/reporting
• Voltage / current divider.
• Other modifiers (we just have k).
• Support for capacitors and inductors.
• Allow the user to specify precision.
• Symbolic resolution.