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 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 connected to the Nordic nRF52840 | + | [[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. Evaluation boards and Preview Development Kits (PDK) were purchased. | A different approach from version 0.4 was taken. Evaluation boards and Preview Development Kits (PDK) were purchased. | ||
| − | * | + | *[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] |
*[https://www.nordicsemi.com/eng/Products/nRF52840-Preview-DK nRF52840 preview Development Kit] | *[https://www.nordicsemi.com/eng/Products/nRF52840-Preview-DK nRF52840 preview Development Kit] | ||
Revision as of 06:08, 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. Evaluation boards and Preview Development Kits (PDK) were purchased.
Goal
Create a low power, battery operated, wireless scale with extended communcation range using Bluetooth Low Energy version 5 (BLE5) with a high performance Analog to Digital Converter (ADC)
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
Data Sheets
http://www.analog.com/en/design-center/design-tools-and-calculators/converter-tools.html
