Using NFC To Power Devices Instead Of Qi

It shouldn’t be any surprise that NFC and similar RFID implementations are capable of providing power to a receiver, since this is after all how RFID tags can work without a battery. The ques…

Hackaday
Using NFC To Power Devices Instead Of Qi

It shouldn’t be any surprise that NFC and similar RFID implementations are capable of providing power to a receiver, since this is after all how RFID tags can work without a battery. The ques…

Hackaday
DIY Smart Button Gets Surprisingly Complicated

There’s a reason that the standards specifications for various wireless communications protocols are extremely long and detailed. [Made by Dennis] found this out first hand when he decided to…

Hackaday
Converting A Nebra Cryptocurrency Miner To A Meshcore Repeater

After the swivel by Helium Inc. towards simply running distributed WiFi hotspots after for years pushing LoRaWAN nodes, many of the associated hardware became effectively obsolete. This led to quit…

Hackaday
Demonstrating The Sheer Lack Of Security In First Gen Cellular Networks

Modern cellular networks are built to serve millions upon millions of users, all while maintaining strict encryption across all communications. But earlier cellular networks were by no means so sec…

Hackaday
Review And Demo Of The Zoyi ZT-QB9 Smart Clamp Meter

Over on YouTube [Kiss Analog] reviews the New Zoyi ZT-QB9 Smart Clamp meter. If you’re putting together an electronics lab from scratch you absolutely must get a multimeter to start. A typica…

Hackaday
39C3: Liberating ESP32 Bluetooth

Bluetooth is everywhere, but it’s hard to inspect. Most of the magic is done inside a Bluetooth controller chip, accessed only through a controller-specific Host-Controller Interface (HCI) pr…

Hackaday
A 1930s Ham Station

[Mikrowave1] wanted to build an authentic 1930s-style ham radio station that was portable. He’s already done a regenerative receiver, but now he’s starting on a tube transmitter that ru…

Hackaday
Decoding Meshtastic With GNU Radio

Meshtastic is a way to build mesh networks using LoRa that is independent of cell towers, hot spots or traditional repeaters. It stands to reason that with an SDR and GNU Radio, you could send and …

Hackaday
Making Your Wireless Keyboard Truly Low-Power

The basics of keyboard design are tried and true at this point, but there are still a few aspects yet unconquered. One of them is making your keyboards wireless. You might think it’s easy, bu…

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