FIGnition is designed to be a low-barrier to entry machine; which extends to the hardware. Therefore, not only can you build FIGnition from a kit supplied by me, but you can build a version of FIGnition: FIGnition FLINT using Stripboard, a PCB anyone can obtain locally. The Stripes circuit is shown below (with the track side shown on the right):


To build the computer you'll also need to know where the components should be placed: here's that information:

 Resistor Resistor Resistor Resistor Diode Capacitor
 R8: 1K5 at N2 R4: 1K at P3 R1: 1K5 at U4 R2: 68R at X4 D6: N4148 at Q1 C1: 4u7 at V2
 R9: 1K at O5 R3: 68R at Y5 R14: 1K5 at L7 R18: 10K at Y7 D7: N4148 at S1 C6: 10n at F5
 R12: 1K5 at E8 R13: 1K at F8 R10: 1K5 at C9 R11: 1K at D9 D3: 3v6 Zener at X2 C5: 10n at N7
 R17: 1K5 at P9 R19: 10K at Z9 R16: 220R at N10 R15: 1K at M11 D4: 3v6 Zener at Y2 C7: 100n at a15-a16
 R7: 220R at J21 R5: 1K at W28 R6: 470R at X29  D2: N4148 at X23 C3: 22p at Z18-Z19
     D1: N4148 at W25 C4: 22p at a19-a20
      C2: 10n at W20-W21

You will also need to know how to place the chips. All of them should be placed with the notch at the bottom (even though the stripes diagram shows them pointing to the top). Also, the SRAM chip goes above the Amic Flash chip.

This circuit was built using my open-source Stripboard designer: stripes and the Stripes circuit is attached at the bottom of this page. Be aware, the sockets are shown the wrong-way up due to a limitation of stripes, they should have the notch at the bottom, and similarly the ICs are to be placed with their pin 1s towards the bottom of the diagram.

Here's the physical version of a FIGnition FLINT alongside a kit-built FIGnition:

You can see a FIGnition FLINT occupies about 50% more board space. If you look carefully you'll notice there's a couple of very slight differences: the 4u7 capacitor has been better placed (slightly to the left) and the bottom row of switches are slightly closer to the top row.

Finally, here's FIGnition FLINT running a version of Life:

FLINT is a fully-working version of FIGnition, it can run any program that a normal FIGnition can run, it has the same I/O facilities (4 fantastic user-pins); it can be upgraded just like any other FIGnition to the latest firmware. It will take about 4 hours to build and please bear in mind you're likely to make more mistakes doing it (I made about 4 errors, which were pretty easy to correct). By comparison a FIGnition kit typically takes about 1.5 hours, but can be build in as little as 30 minutes.

You're very welcome to build a FIGnition FLINT - let me know if you're successful and if you modify the circuit, please send me your variation and I may well include it as an attachment here. I don't supply components or kits for FIGnition FLINT; but the PCB version is always available to buy for £20.00 (or equivalent in your local currency)!

Julian Skidmore,
24 Dec 2011, 02:15
Julian Skidmore,
13 Feb 2015, 08:11