Description OPS242-A Short Range Radar Sensor The OPS242-A is complete short-range radar sensor providing motion detection, speed, and direction reporting. All radar signal processing is done on board and a simple API reports the processed data. Flexible control over the reporting format, sample rate, and module power levels is provided. The sensor has full FCC/IC […]
Arduino Gets Its First Radar Shield Board Continue Reading
The Rural Hack Kit is the perfect electronic set to get started hacking farms, gardens, or even plants on your balcony. Story The Rural Hack kit. The Rural Hack Kit is the perfect electronic set to get you started hacking your farm, garden, or plants on your balcony. The kit includes the essentials for monitoring
Rural Hack Kit Continue Reading
Step 1: Introduction Description: Bipolar Stepper Motor is DC motor that move in discrete steps. It has multiple coils that are organized in groups called “phases”. By energizing each phase in sequence, the motor will rotate, a step at a time. In order to be able to move the motor, you will need a motor
How to Interface Stepper Motor With Arduino Continue Reading
Step 1 Scavenging Parts What I’d like to do for this crazy/ambitions project is turn an old cell phone into a smartwatch. So obviously an old cell phone is required. The primary reason for this project is simply that I had an old cell phone laying around and wanted to find a creative way to
Make Your Own Smartwatch From An Old Cell Phone Continue Reading
Ever wished you could talk with your plants? Story Introduction As the English poet William Wordsworth once said: “Your mind is the garden, your thoughts are the seeds, the harvest can be either flowers or weeds.” Keeping your plants alive can be quite the challenge as they are very bad at communication. One way to
Plant Communicator Continue Reading
When I was working on the the latest version of the Common Parts Library, I realized that it would be helpful to explain why you might pick one type of inductor over another. We started off this series by writing “How to select a capacitor,” followed by “How to select a resistor,” and are continuing
How To Select an Inductor Continue Reading
Greetings! In EMRFD, 4.10, Wes provides the schema for a versatile VXO – extending frequency synthesizer. Although, I referred him to Wes for help, a reader asked me some questions and I ended up designing some pieces for him. In order to test some of my ideas, I made a VXO – based synthesizer that
VXO – based PLL frequency synthesizer for 7 MHz Continue Reading
Some time ago I passed comment in here about converting an ESP-01 to 32Mb (or 4MB). And here it is in the flesh – a 32Mb ESP-01 – and also – at last – Sonoff Upgrades. Now, why would you want to do all of that? I would suggest only if you happen to have
Memory upgrade for ESP8266 Continue Reading
A wifi-connected high-precision camera slider, controllable from any web browser. Easily capture smooth sliding video shots or time lapses. Story My name is Ben Brandt, and I run a YouTube channel as a hobby to share my various DIY projects (like this one) as well as woodworking, metal work, and making things in general. In
Wifi-Controlled Precision Camera Slider Continue Reading
Arthur English’s group at Emory has developed a custom device that they have used for stimulating peripheral nerves optically in anesthetized mice using a standard optical fiber. The device is compact, rechargeable battery-operated, and controlled either manually or by computer using analog input. Essentially, laser LED illumination is coupled to an optical fiber by a
Optogenetic hardware setup Continue Reading
