| Year | 2011 |
| Date | 17-Jun |
| Volume | 206 |
| Issue | 4,406 |
| Page | 784 |
| Category | Electronic |
| Part | |
| Title | A รบ2 Counter |
| Author | Linton Wedlock |
| Notes | Makes a useful electronic accessory from a cheap calculator. Calculator disassembly, adding the switch wires, flexible keypad calculators, using reed switches, switch and magnet placement, testing, increasing the count rate, counting other actions, measuring with the counter, other ideas |