Author: mixos
![Bluetooth Smart module is only 11x8x1.8mm Bluetooth Smart module is only 11x8x1.8mm](https://www.electronics-lab.com/wp-content/uploads/2017/04/2017-04-24-eenews-jh-amber.jpg)
Bluetooth Smart module is only 11x8x1.8mm
By Julien Happich @ eedesignnewseurope.com: Amber wireless GmbH's AMB2621 Bluetooth Smart module is a 2.4 GHz BLE wireless module based on the Bluetooth Smart 4.2 standard, measuring only 11x8x1.8mm and offered with or without integrated antenna. Bluetooth Smart module is only...
Continue Reading![Using a supercapacitor for power management and energy storage with a small solar cell Using a supercapacitor for power management and energy storage with a small solar cell](https://www.electronics-lab.com/wp-content/uploads/2017/04/supercap_power_energy_Lab_test_setup.gif)
Using a supercapacitor for power management and energy storage with a small solar cell
Jean Mars & Julia Leem @ edn.com writes: In Part 1 of this series, we have reviewed solar cell performance, how to select and size the supercapacitor, requirements of supercapacitor charging circuits and charging IC characteristics. We will now use two case studies to illustrate...
Continue Reading![Simple circuit indicates health of lithium-ion batteries Simple circuit indicates health of lithium-ion batteries](https://www.electronics-lab.com/wp-content/uploads/2017/04/Simple_circuit_indicates_health_lithium_ion_batteries_figure1.gif)
Simple circuit indicates health of lithium-ion batteries
Fritz Weld @ edn.com proposes a simple circuit to check li-ion battery health. He writes: Lithium-ion batteries are sensitive to bad treatment. Fire, explosions, and other hazardous condition may occur when you charge the cell below the margin that the manufacturer defines. Modern...
Continue Reading![Boost Converters and Buck Converters: Power Electronics Boost Converters and Buck Converters: Power Electronics](https://www.electronics-lab.com/wp-content/uploads/2017/04/boost-converters-and-buck-conver-1024x576.jpg)
Boost Converters and Buck Converters: Power Electronics
Boost Converters and Buck Converters: Power Electronics -...
Continue Reading![Raspberry Pi Publishing MQTT Messages to ESP8266 Raspberry Pi Publishing MQTT Messages to ESP8266](https://www.electronics-lab.com/wp-content/uploads/2017/04/featured-image-raspberry-pi-esp8266-mqtt-output-1024x576.jpg)
Raspberry Pi Publishing MQTT Messages to ESP8266
Rui @ randomnerdtutorials.com tipped us with his latest tutorial. He writes: In this project you’ll create a standalone web server with a Raspberry Pi that can toggle two LEDs from an ESP8266 using MQTT protocol. You can replace those LEDs with any output (like a relay that...
Continue Reading![Screens become speakers, smartphones can lose micro-speakers Screens become speakers, smartphones can lose micro-speakers](https://www.electronics-lab.com/wp-content/uploads/2017/04/170420eedn-snip-redux.png)
Screens become speakers, smartphones can lose micro-speakers
by Graham Prophet @ eedesignnewseurope.com: Redux (London UK) has followed earlier announcements of its surface-wave-based haptics technology with a version specifically targeted at the smartphone, with which it aspires to “kill off smartphone micro-speakers”. Screens become...
Continue Reading![Castellated PCB Edges Castellated PCB Edges](https://www.electronics-lab.com/wp-content/uploads/2017/04/fabricated-pcb-scaled-1024x440.jpg)
Castellated PCB Edges
@ oshpark.com: Castellations are small plated edges, typically used for making circuit boards into small pcb modules. These are often seen on wireless modules, such as the ESP8266-12E. Castellated PCB Edges -...
Continue Reading![FPGA eink controller FPGA eink controller](https://www.electronics-lab.com/wp-content/uploads/2017/04/eink.png)
FPGA eink controller
Julien @ hackaday.io build a custom board to control e-ink display. He writes: The idea is to control an old broken kindle 3 eink display with a FPGA. I started looking at http://essentialscrap.com/eink/waveforms.html and http://spritesmods.com/?art=einkdisplay since eink constructor...
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