Based upon the original Hall-O (look here). This is a single sided board for easier home etching.
- SS495B hall sensor (replacement SS495A)
- LM-258-D op amp
- SMD potentiometer 10K
- 0805 SMD resistors (2x 560, 1x 1K, 3x 10K, 1x 22K, 1x 1M)
- SMD capacitor 100nF
- SMD tantalum capacitor 10µF/16V
- 1206 LED (example, blue or white requires other resistor, replace R6)
- BC848 SMD transistor
- 1x4 angled pin headers or connector
- (or solder wires directly and route wires through holes)
- in order to activate: neodym magnet