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Here is an example of a hardware setup to measure the voltage on a Lithium battery with a voltage divider on nRF52. The Lithium battery typically has a voltage range of 2.7 - 4.2 V and we (Nordic) recommend that you divide the battery voltage with two resistors. To reduce the leakage current through the voltage divider to the minimum, we want the total resistance to be as high as possible. Therefore, we choose R1 to be 800 KΩ. This is the maximum source resistance we can have and will require an acquisit...

 This series of posts will describe a new toy here at Nordic: The nRF Hexapod. The post will be divided in multiple parts, this part describing the project in general and the hardware that is required. All parts of this project is open source so you can make one yourself.The hexapod is built to show the power of nRF52. Using hardware PWM we can control up to 20 servos simultaneously, 12 using the PWM peripheral and 8 using a combination of TIMER, PPI and GPIOTE. This project also shows how a single c...

Sometimes we look for what will be the best demo for BLE operation between mobile device and peer device. Recently Blinky is one of perfect application, but I suggest one more interesting example between mobile game based on Android and nRF51-DK or nRF52-DK as a controller. Environment You may know Digital Bird already introduced in our Github, which was created as a part of BBC Make it Digital program with microbit. So this will be a nice game to operate with DK. https://github.com/NordicSemicon...

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MorningI was just wondering if anyone knows which types of Bluetooth devices work with the nRF Toolbox for iOS and where to buy them - proximity etc.Iain...

I need a module that can transmit to a range as low as 30 cm.What would be the right choice for this?Thank you....

I am using nrf51822 and I am trying to reduce the transmit range to 30 cm or less.Is it possible to achieve this. The reason I am doing this is that I will be working with a large number of chips and to reduce any complications I need the chips to transmit at a very low range.Thanks for the help....