This is a list of projects I've done in the past; you may find some details of them useful, or just read the reports for fun:

• Extending the cache of the PS/2 cached SCSI controller to 2 Mbytes.
• Building your own Voltage Regulator Module for IBM's Lacuna Planar.
• Linux drivers for Microchannel-based Ethernet cards made by Syskonnect.
• Linux driver for the IBM LAN Adapter/a for Ethernet.
• Linux driver for the D-Link DE-320CT Ethernet Adapter.
• Linux driver for the Olicom 2335 Ethernet Adapter.
• Comparison of the Performance of Various MCA Ethernet Adapters.
• lsmca, a small program to spell out the POS settings of the planar and all cards in a Microchannel-based system.
• Resurrecting an old Sun, the way I repaired an old Sun3/60 workstation
• HP equivalence list: Ever seen a board made by HP with these obscure '1820-...' designations? They're in fact standard chips relabeled by HP, and sometimes you find chips with both the HP and the original label. This is a list I assembled from such lucky cases, which you might find handy if you have to repair HP boards...
• The PcPar68000, a 68000-based parallel computer
• Replacing a broken microprocessor in a Telefunken RT200 HiFi tuner
• Fixing the Power Amp Section in the Telefunken RR100 by 'Making 2 out of 1'
• Unused features in the Telefunken RM 300