#392 whiteboard

Building the Whiteboard - Boldport Club project #22 - a breadboard enhancer featuring power supply and prototyping areas.

Build

Here’s a quick demo running a CD4060 ripple counter on the breadboard..

Notes

The whiteboard is a neat little “breadboard enhancer”. It includes:

a prototyping shroud for a mini breadboard, including 4 LEDs and various pads for other components and connections
a variable power supply unit, based on the LM317
a CR2032 coin cell power supply unit
a 6-pin DIP adapter for 3 x 0805/1206 SMD components (e.g. LEDs, diodes or passives) or 2 x SOT23 SMD components (e.g. transistors/FETs)

Kit Components

The project includes the following components

Qty	Component
1x	170-point breadboard, Pro-Signal PSG-BB-170W
1x	Adjustable regulator, TI LM317KCS
1x	2032 battery holder, Multicomp BC-2001
1x	6-way socket, TruConnect DS1023-1*6 S01
1x	5-way header, Multicomp MC34739
1x	2.1mm power socket, TruConnect, 20-0970
1x	2KΩ trimmer, TE Connectivity 416XA202P
1x	Resettable 100mA fuse, Multicomp MC33169
2x	10µF electrolytic capacitors, Multicomp MCMR35V106M4X7
1x	100nF ceramic capacitor , Suntan TS15001E104MSBFBOR
3x	1A diode, Diodes 1N4001-T
4x	3mm white LEDs, Valcon VDIFFLED-3MM-W
1x	220Ω resistor, Multicomp MCF 0.25W 220R

kit_parts

Also included is a sheet of StickerCAD icons. I used them on my laptop case - including a rebus if you look carefully;-)

join_the_resistors

Construction

I’ve yet to decide what component(s) I’ll put on the DIP adapter. But power supply boards are complete and working perfectly.

whiteboard_build_complete

As a quick demonstration and test, I put a simple 4-stage CD4060 ripple counter running at a base frequency of around 10 Hz. on the breadboard, with outputs driving the LEDs on the shroud (essentially a 4-digit binary counter).

Breadboard

Schematic