When Pete Juliano sat down to design a sideband transceiver for the 20 Meter (14 MHz) ham radio band, he eschewed the popular circuits that make up so many designs, opting instead for the innovative approach of the Seven-Transistor Novelty. He forged ahead, building a novel design that he calls Pete’s Simple Seven SSB Transceiver, […]
PSSST! HERE’S A NOVEL SSB RADIO DESIGN WITH ONLY SEVEN TRANSISTORS Read More »
Over on the Spectrum web site, [Dale] — a relatively new ham radio operator — talks about his system for sending text messaging over VHF radios called HamMessenger. Of course, hams send messages all the time using a variety of protocols, but [Dale] wanted a self-contained and portable unit with a keyboard, screen, and a GPS
More than once, we’ve looked at a cool board like the TTGO T-Display and thought, “What can we build with this?” If you are [Volos Projects], the answer is a tiny Internet radio. He’s done a lot of other projects with the board including some games and a weather station. You can see the project in
Designed for mass-market tracking and navigation applications, the Teseo-LIV3R ROM-based module, has full GNSSalgorithm capability for cost-conscious tracking and navigation devices, says ST Microelectronics. The GNSS module provides odometer functionality with three trip counters and reached-distance alert, along with geo-fencing capabilities with up to eight configurable circles and crossing-circles alarm. Support for real-time assisted GNSS with free server
Radio modules using STMicroelectronics’ STM32WB55 wireless microcontroller are available from Arrow Electronics. The Sharky modules were co-developed with Italian designer, Midatronics. By Caroline Hayes The microcontroller integrates a 2.4GHz RF transceiver supporting Bluetooth 5 (including Bluetooth Low Energy), Thread, and ZigBee stacks. Its dual Arm Cortex-M core architecture enables real-time secure application performance running on the 64MHz Cortex-M4F core, and concurrently manages the radio subsystem and
NEXT-GENERATION IOT WIRELESS MODULES ACCELERATE DEVELOPMENT Read More »
Sometimes the best way to figure out how something works is to make a model of it. 3D-modeling software makes it possible to do the job in silico, and sometimes that’s enough. But to really get inside the designer’s head, executing a physical model, like this quarter-scale RC-controlled Perseverance rover, is a great way to go. If
3D-PRINTED SCALE MODEL OF PERSEVERANCE ROVER SEEMS AS COMPLICATED AS THE REAL ONE Read More »
There’s no doubt that the RTL-SDR project has made radio hacking more accessible than ever, but there’s only so far you can go with a repurposed TV tuner. Obviously the biggest shortcoming is the fact that you can only listen to signals, and not transmit them. If you’re ready to reach out and touch someone,
Morse code unit for kids. Variable speed and different levels. My son goes to CUBS and has a special event coming up. This event is all about communicating with other Scouts/Cubs from around the world? Via radio, also over the weekend there will be other activities including Morse code. So this little project is just
The Calypso Wi-Fi Module is offered in 19 × 27.5 × 4 mm dimensions and can be operated in -40 to +85°C temperature range. It supports IPv4, IPv6 and common network applications like SNTP, DHCP, MQTT, mDNS, and HTTP(S). The module features AT command interface that enables easy expansion of an embedded system. It comes
Calypso Wi-Fi Certified Radio Module for Secure Industrial IoT Solutions Read More »
Building radio receivers from scratch is still a popular project since it can be done largely with off-the-shelf discrete components and a wire long enough for the bands that the radio will receive. That’s good enough for AM radio, anyway, but you’ll need to try this DIY FM receiver if you want to listen to something more
