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PCB antenna used in the nRF51 DK 0

I am trying to find out the part number of the antenna (I assume it is a PCB antenna) used in the nRF51 DK ( www.nordicsemi.com/.../nRF51-DK) . I found a lot of similar questions...
- antenna nrf51dk
742 views

0 replies

Started over 9 years ago
by BCNLANYC
Not Answered
How to see which part of the code/variable is using more Memory ? 0

Hi. I am using the NRF52 Development board, on Keil uVision, to implement a C program that uses Dynamic Structs. The Structs re-size themselves ( by increasing their capacity...
- nrf52 keil c memory
750 views

0 replies

Started over 9 years ago
by Muhammad Ahmad Shah
Not Answered
asynchronous pulse counting in low power mode 0

Hello, I have an NRF51822 (redbealab ble nano) that I would like to use to count pulses in very low power mode. Pulses are asynchronous The rate of pulses can...
1079 views

0 replies

Started over 9 years ago
by fakufaku
Not Answered
nRF52 SAADC gain error a function of Vcc? 0

Hi I'm attempting to read a PT-100 sensor value that is part of a voltage divider using a nRF52. Both the reference resistor and the PT-100 is sampled while the voltage...
- nrf52
- adc
- gain
- vcc
- nrf52382
- saadc
2250 views

0 replies

Started over 9 years ago
by Visti Andresen
Not Answered
Sample multiple inputs with fixed rate using ADC hal 0

Hi I have been searching the forums, but were not able to find an answer to my question. I'm trying to sample 4 analog inputs on the nRF51-DK using the ADC hal. (SDK10...
- adc
- oftdevice
1277 views

0 replies

Started over 9 years ago
by Phillip

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Beacon Kit - Mistake in Ref_Design_UG_v1.0

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I connected the programming header as described in "nRF6930_Beacon_Ref_Design_UG_v1.0.pdf" 5.5.4 Programming interface. I was trying to program Beacon Kit but failed many times then I compared it with…
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SD card interfacing

Salman

Hi, I have written SD & SDHC card routine for reading, writing and erasing data from SD card. It used the hardware SPI of nRF51822. NOTE: 1)Define the PINs of SD card first before initialing. 2)Define…
- 10 Oct 2014
How different BLE packet types influence throughput

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There are several types of write operations, write request with authorization, write request without authorization and write command. You can see message sequence charts for those messages here and he…
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Measuring Lithium battery voltage with nRF51

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Here is an example of a hardware setup to measure the voltage on a Lithium battery with a voltage divider and a connected capacitor. The Lithium battery typically has a voltage range of 2.7 - 4.2 V and…
- 2 Oct 2014