HackerBox 0096: Get radio active by exploring the two meter very high frequency (VHF) amateur radio band, how to obtain an amateur radio license, and how to join an amateur radio club. Configure the ESP32 T-Display module for easy programming via the Arduino Integrated Development Environment (IDE). Assemble the exclusive HackerBox Two Meter (2m) radio lab…
How To Charge Li-Ion/LiPo Batteries With A Power Supply Video by EEVBlog How to safely charge Lithium Ion & Lithium Polymer batteries with a bench power supply, for when you don’t have the correct charger available. WARNING: Take care using PSU’s for charging unprotected cells. A fault in the PSU might overload or short the…
GreenEarth USB Rechargeable AA Batteries | 1450 mAh | Quick Charge USB Charger | 500 Cycles Reusable | NiMH Double A 1.2v (2 Pack) About this item: ✅ USB RECHARGEABLE BATTERIES – Whether you’re camping or at home, you can simply charge them with a single USB port. No need to buy batteries frequently.…
Simple SDR Receiver that can receive frequencies up to approximately 30MHz, if an optional Si5351 clock generator is used. Without this, it receives up to about 20MHz, using the ESP32 clock dividers. The circuit is so simple that it can even be built on a breadboard. Tayloe Quadrature Detector circuit on a solderless breadboard Circuit…
Antuino is an accurate instrument that can be used in the field to measure SWR, field strength, modulation, etc. In the lab, it can be used to sweep filters, measure gain, distortion, frequency response, etc. It works upto 150 Mhz. On the third harmonic, it is usable on 435 Mhz band as well (with…