| Year | 2019 |
| Date | 30-Aug |
| Volume | 223 |
| Issue | 4,620 |
| Page | 376 |
| Category | Electronic |
| Part | 1 |
| Title | Soldering Timer |
| Author | Les Kerr |
| Notes | Describes a microprocessor based timer which will extend the life of your soldering iron. The circuit, parts list, PCB, testing the PCB, fault finding, box drilling, final assembly |