Difference between revisions of "Hardware: Hive Interface Board 5"
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| − | After a failed attempt at Hive Interface board version 0.4, work has begun on version 0.5. | + | After a failed attempt at [[Hardware: Hive Interface Board 4|Hive Interface board version 0.4]], work has begun on version 0.5. |
[[File:NRF52 AD7124 breadboard c.jpg|thumb|right|500px|Analog Devices AD7124-8 Eval Board (left) connected to the Nordic nRF52840 Preview Development Kit (right)]] | [[File:NRF52 AD7124 breadboard c.jpg|thumb|right|500px|Analog Devices AD7124-8 Eval Board (left) connected to the Nordic nRF52840 Preview Development Kit (right)]] | ||
| − | A different approach from version 0.4 was taken. | + | A different approach from version 0.4 was taken. An Analog to Digital Converter (ADC) evaluation board ([http://www.analog.com/en/design-center/evaluation-hardware-and-software/evaluation-boards-kits/eval-ad7124-8.html#eb-overview Analog Devices EVAL-AD7124-8SDZ]) and the Nordic [https://www.nordicsemi.com/eng/Products/nRF52840-Preview-DK nRF52840 Preview Development Kit] (PDK) were purchased. |
| − | + | ||
| − | + | This allows the software to be developed and tested before the hive interface board is designed. Initial development of the ADC driver was developed on the PI. | |
==Goal== | ==Goal== | ||
Revision as of 07:05, 31 January 2018
After a failed attempt at Hive Interface board version 0.4, work has begun on version 0.5.
A different approach from version 0.4 was taken. An Analog to Digital Converter (ADC) evaluation board (Analog Devices EVAL-AD7124-8SDZ) and the Nordic nRF52840 Preview Development Kit (PDK) were purchased.
This allows the software to be developed and tested before the hive interface board is designed. Initial development of the ADC driver was developed on the PI.
Contents
Goal
Create a low power, battery operated, wireless scale with extended communication range with a high performance Analog to Digital Converter (ADC) based on the Internet of Things (IOT) paradigm.
Features
- AD7124-8 24 bit ADC with 8 differential inputs
Provides independent channels for each of the 4 load cells or four scales with 4 loads cells in parallel.
- Bluetooth Low Energy (BLE) support
Uses the Nordic nRF52 32 bit ARM processor with GPIO lines and eight 16 bit ADC inputs.
- 40 pin header plug into a Pi.
The board can run from the Pi without the BMD301 as a replacement for the HX711
Development
[AD7124 Development]
Data Sheets
http://www.analog.com/en/design-center/design-tools-and-calculators/converter-tools.html
