ESP8266 temperature logger
https://www.electronics-lab.com/esp8266-temperature-logger/
A ESP8266 temperature logger project from Facelesstech: I decided to use the esp-01 module because I only need 2 GPIO pins since I was using the DS18B20 temp sensor and the WS2812 LED. This made the hardware really cheap and easy to reproduce too. I normally use FTDI boards when it comes to the USB to […]
Iterated-map circuit creates chaos
https://www.electronics-lab.com/iterated-map-circuit-creates-chaos/
Lars Keuninckx @ edn.com writes: The Design Idea circuit shown below is a simple implementation of an iterated unimodal map, reminiscent of the logistic or Verhulst map encountered in the study of nonlinear dynamics. It is useful to show chaotic discrete-time dynamics to students, or as a random number generator. Specifically, the circuit implements: Vk+1 […]
Make Your Own Smartwatch From An Old Cell Phone
https://www.electronics-lab.com/make-smartwatch-old-cell-phone/
Have an old cell phone laying around? Don’t know what to do with it? What if I told you that you could turn that old cell phone into a smartwatch! 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 […]
New PIC32MM family consumes as little as 500 nA
https://www.electronics-lab.com/new-pic32mm-consumes-little-500-na/
by Clemens Valens @ elektormagazine.com: The new PIC32MM family, currently Microchip’s lowest power 32-bit PIC32 family, features sleep modes down to as little as 500 nA. Filling the gap between the PIC24F XLP and PIC32MX families, the new family also offers so-called core independent peripherals that once initialized can function without intervention of or loading […]
Hall-effect current sensing replaces shunt-resistive measurements
https://www.electronics-lab.com/hall-effect-current-sensing-replaces-shunt-resistive-measurements/
These high speed isolated calibrated current sensors are presented as an effective alternative to conventional shunt based solutions; standard-footprint packaged ICs simultaneously offer 100 kHz bandwidth, high accuracy and crosstalk resilience. By Graham Prophet @ edn-europe.com Melexis (Tessenderlo, Belgium) has added the MLX91210 family of integrated sensors; operating from a 5V supply, the ICs have […]
How To Select an Inductor
https://www.electronics-lab.com/how-to-select-an-inductor/
Sanket Gupta pointed us to his latest article, on how to select an inductor and discuss about the various types of them. Inductors are two-terminal components used for filtering, timing and power electronics applications. They store energy in the form of magnetic fields as long as a current is flowing. Inductors oppose a change in […]
ArduCAM Introduces tiny Raspberry Pi compatible board
https://www.electronics-lab.com/arducam-introduces-tiny-raspberry-pi-compatible-board/
ArduCAM has introduced a tiny Raspberry Pi compatible module based on Broadcom’s BCM2835 Processor, the same chip found in the original Raspberry Pis A, B, B+ and Zero. This module is tiny, measuring only 24 x 24mm and it is compatible with all of the software that makes the Raspberry Pi so popular. It comes with 256MB/512MB […]
VXO – based PLL frequency synthesizer for 7 MHz
https://www.electronics-lab.com/vxo-based-pll-frequency-synthesizer-7-mhz/
Vasily Ivanenko made a VXO-based synthesizer: To make a VXO to mix with a ~7 MHz VCO, you’ll need a crystal that is higher in frequency than the highest frequency you want to synthesize. Some rummaging revealed a bag of 21.4773 MHz crystals that I could divide by 3 to garner 7.159 MHz. To afford a […]
The future of IC design
https://www.electronics-lab.com/future-ic-design/
R Colin Johnson @ edn.com discuss about the future of IC design and the different technologies that can extend Moore Law. Such technologies include 3D memories, superconducting, quantum, neuromorphic and photonic mixed-signal devices. To celebrate 60 years of EDN, we’re looking into the future to predict what advancements will be made in IC Design in […]
Memory upgrade for ESP8266
https://www.electronics-lab.com/memory-add-esp8266/
Pete show us how to upgrade your ESP8266 with 32Mbit memory chip. 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 […]