Drawdio on Veroboard
is "a pencil that lets you draw with music" by
To make it go to the most excellent
Drawdio project pages
for project constuction details.
sell the kit or just the PCB but unfortunately the international shipping costs are very high; more than 5 times the cost of the PCB. A cheaper option is to buy/salvage/scavenge the components and make up your own circuit board. All the information is available on the project pages, including the parts list (scroll to V1.0) and circuit design
. The biggest hurdle is that you won't have the handly PCB. Although the PCB layout
is available on the project site, you need to be able to make your own PCBs. Something that I couldn't really embark upon; so here's an alternative.
) is a good way to make up your own circuit boards. It is a circuit board with parallel copper tracks on one side and peppered with holes so you can place components into it anywhere. However, to make up a particular circuit you need to plan where to put the components, where to break the tracks and where to place wire links. Having gone through this process I thought I'd put up the design to save others from having to do it again, hence the photos below. They should show you all you need to do to make up a Drawdio using verobaord and it looks like it's about the same size as the kit's PCB. Checkout the video for a demo.
Click on the images for larger versions.
The upper diagram in the photo below shows the track cuts that you need to made on a 29x5 piece of Veroboard. It's an underside view - note the letters on the left and see how they correspond to the diagram beneath the circuit board. The lower diagram shows the component layout and how they wire into the tracks on the underside.
The components fitted. Note that for Q1 I used an 8050 NPN transistor and for Q2 I used a 8550 PNP transistor. Special thanks to Dave for picking out the parts I needed!
I could not source any coppy foil so used the core of some mains cable...
The completed Drawdio.