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Jumperless

a jumperless breadboard

If you want one of these, they're available in my Tindie store

Video

(You can click on this to watch the explainer video)

Using a bunch of analog crosspoint switches wired together into one bigger switch, this breadboard makes real, hardware connections between any points on the board or the Arduino Nano header at the top via software command, instead of needing to use jumper wires.

BreaboardJump00420

3D Printable Stand (you can drop the model through the build plate to adjust the height)

3D Printable Jumperless Trap (jk it's a carrying case, but make sure you can get it back open before you put your Jumperless in it)

Try this Wokwi project if something isn't working: https://wokwi.com/projects/389569655762010113

Here's an example of me using this thing to connect some I2C pins from an Arduino to an OLED

JumperlessI2CExampleEnlonggened.mp4

Jumperless also has a ton of voltage/current sensing so the RGB LEDs underneath each row can show a ton of information about what's going on with your circuit. 2 buffered high-current DACs (one 0-5V and one ±8V), 4 buffered and level-shifted 12-bit ADCs (3 are 0-5V and 1 for ±8V), 2 INA219 current and voltage measurement ICs, and 4 GPIO to simulate digital or analog signals that can be routed to anywhere on the breadboard or the Arduino Nano header.

JumperlessLEDmatrixExample.mp4

Use it to probe the pins on an unknown IC (which is what I'm doing in the video above), or for some automated fuzzing, or to help guide you through converting a schematic to a real circuit, or do whatever the hell you want with it.

TxRx00097-Edit

The connections are real and fully analog (-8V to +8V, up to around 1 MHz before signal quality starts to degrade) instead of cheating with some measure-then-simulate setup, although you can do that too if you want to simulate a memristor or to send jumpers over the internet.

IMG_3849.mov

If you want to read about how the code and stuff works, the README in JumperlessNano goes through how each part works in more detail.

Or check out the Hackaday.io page and the Hackaday Blog Writeup

And no, it's not an FPGA.

IMG_3827

Schematic

Here it is running a 555 circuit (note that this is a Rev 1 without the through-PCB LEDs)

IMG_3995.mov

I sell on Tindie

Here are some fun bonus shots RainBounceLarge

RandomLarge

https://github.com/Architeuthis-Flux/Jumperless/assets/20519442/b933e817-c6e4-4d97-9fc0-7b8d9e875ebb SchematicRevision3.pdf

DSC01523 usage

https://github.com/Architeuthis-Flux/Jumperless/assets/20519442/d070d99d-b6b3-43e3-adee-4ca2d7358a9a DSC01237-2

DSC01154

DSC00683

IMG_3589 IMG_3886