Peter Neufeld (16)

24-08-2026 | A faulty “donut” antenna shipped with an ESP32-based ATS-Mini receiver was wired to cancel its own signal. Rewiring the loop fixed it and do...

24-11-2025 | The low-cost ESP32-C3 SuperMini modules feature a compact SMD antenna. However, the small antenna design greatly restricts the effective Wi-...

30-10-2024 | ESP32 modules often have “integrated antennas” printed on the PCBs. But, at times, you might need improved Wi-Fi range. A solution can be an...

1-09-2024 | ESP32 modules often have “integrated antennas” (printed on the PCB), sometimes resulting in poor Wi-Fi range and otherwise causing trouble....

1-01-2024 | The new helpful hammer in the software hobbyist’s toolbox is ChatGPT. It can not only write completely new code, but also extend and enhance...

2-10-2023 | ChatGPT is a helpful tool for software developers. It can not only write entirely new code, but it can also extend and enhance handwritten s...

1-05-2023 | Determining indoor air quality does not always require highly accurate and expensive measuring devices. A simple indicator plus limit-value...

30-03-2023 | Want a do-it-yourself solution for taking indoor air quality measurements? This eCO2 Telgram Bot sends alerts to a Telegram account to keep...

1-08-2022 | Want to switch a kitchen light with floury or sticky fingers? A relay board and a TTP223-based sensor board will help you get the job done....

1-03-2022 | Let's take a look at a simple analog circuit for levitating small objects, which is the subject of many interesting discussions and expe...