Our project is to make a 9V battery adaptor plug to be used at DC jack/socket on the Arduino board. Fig. 1: Arduino board. This DIY 9V battery power adaptor is built using a drinking straw, aluminium ...

Battery Input: 0-5V(max) – no reverse polarity Constant Current Load: 37mA to 540mA(max) – 16 Steps – can be modified by the user Circuit Analysis. Figure 1 shows the schematic diagram of the device.

[AI] needed a quick-change battery option for his Arduino project and came up with what he is calling the AA Undershield. ... 12V), the USB connector (5V), or the VIN pin of the board (7-12V).

PunchThrough, creators of the LightBlue Bean, have just launch a Kickstarter for a new version called LightBlue Bean+. The tagline for the hardware is “A Bluetooth Arduino for the Mobile Age&… ...

The EnergyShield Arduino rechargeable battery has been created by Nightshade Electronics and has three main internal functions including a circuit to boost the battery’s nominal voltage of 3.7V ...

To measure a 9V battery’s voltage, an Arduino Uno was setup along with a sense voltage where the current leaving the battery through a 10 Ohm sense resistor is monitored. A current sink that came from ...

Denis Hennessy recently encountered a problem we've all faced: he needed some AAs for a battery-eating gizmo, and he was overwhelmed by the choices available. Ignoring the shiny packaging and its ...

LoRa module: Murata ABZ Single cell LiPo cell charger on-board with charging signal internally connected to PA11 (via jumper) Buck/Boost switching power supply for delivering stable 3,3V regardless of ...

Hey, Thanks for this library. However, I'm having issues obtaining the battery level. It always reads 100. I have a Li-Po 3.7v 1000mAh battery connected to the Arduino through the on-board JST ...