Nice ideas that will never be

• DONE find other interesting IRC-channels and connect to them
• (DIN-rail mountable) I/O module
• serial ROM-card PC-interface for Atari 2600
• mouse-controlled music-generator
• NES-zapper game
• DONE battery-powered probe to detect floating pins
• DONE: benchtop box to control/show digital signals, using switches and LEDs
• The Arcade joystick interface for NES (connect joystick instead of NES-controller)
• serial keyboard-/joystick-emulator for C64 (connects to keyboard-header)
• LED-matrix in the form of (see-through) mesh
• coloured translucent panes for living-room bookcase
• find out how video-signals work
• find out how data-storage on tapes works
• acrylic enclosure for C64
• find out how Tcl namespaces and simple modules work exactly
• simple devboard with host-MCU, one per interesting chip (e.g. CPLD), to use it in a low-level way
• do something with VHDL/Verilog
• DONE: simple bitbanging FTDI AVR progger
• LED-effects for livingroom ceiling / cupboard
• VT100/220 clock using ASCII-art (e.g. aalib)
• redesign livingroom LCD-display and lib
• NES zapper adapter & proof-of-concept code for Atari 2600
• DONE AC-load using power-resistors and triacs
• gravitar / space war / outlaw sort of game for oscilloscope
• DONE: tiny ISP debugging framework for microcontrollers
• small dev-/proto-board with AVR and programming- and serial-ports behind USB-hub
• LED-matrix + gyroscope + accelerometer = virtual window (or with 2D optical sensor from mouse)
• animated bike light v2
• bike wheel effect lights
• minimal tamagotchi
• find out how DRAM works exactly
• serial morse interface / buzzer
• animated movie using components, PCB and copy/paste
• mind machine
• equalizer using moving static magnets and static electromagnets
• mechanical cellular automaton
• hand-assembly 1-bit CPU into small CPLD
• tetrahedron-shaped robot
• arcade-cabinet containing Atari VCS or C64
• 3x PS/2 mouse + round PCB + mid LED-button = live asteroids game
• talking battleship-game using 2 telephones
• make chiptunes using home-built tracker and PC soundcard
• IR display with resistor-grid and fan blowing on them
• one-hand keyboard using accelerometer
• do something with C64/VCS analog inputs
• 2-player, 2-VCS Pong using audio/joystick as bidir link
• memory game using 1541 using LED and drive-lid as I/O
• cluster using vintage intelligent peripherals on some shared bus
• quad-paddle pong on atari VCS
• paddle-game on c64 involving FISH
• Nipkow-disk analog image transfer
• Tcl/Vi'ish kernel for C64
• benchtop box converting digital signal to OC/relay/pushpull/PchFET
• simple battery pack using lead-acid battery
• adventure-/maze-game inside cassette-tape, with sound output and play/rwd/fwd/flip as input
• composite Pong with 2 distance-sensors as inputs
• DONE FLDSMDFR-like eye-animation on C64
• DONE self-disabling adapter in between C64 and cartridge for small attract-screen
• hacking Nespresso-machine to play a game
• portable variable AC/DC converter with V-/I-readouts and 2 or 3 outputs
• make a nice serial bootloader
• C64 screen with only lda/sta $d020, video off, with huge codesize
• vga monitor pixel wall