Difference between revisions of "Hardware: Hive Interface Board 4"

Revision as of 04:33, 25 November 2017

Can operate with the Pi or as a standalone Bluetooth Low Energy (BLE) device. Replaces the HX711 single channel ADC with an 8 channel.

Provides independent channels for each of the 4 load cells or four scales with 4 loads cells in parallel.

Maybe not necessary. Preliminary tests using the EVAL-AD7124-8 board are able to resolve to .001 lbs (.45 g) without external amplifiers.

Uses the BMD301 containing the Nordic nRF52 32 bit ARM processor with GPIO lines and eight 16 bit ADC inputs.

The board can run from the Pi without the BMD301 as a replacement for the HX711

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 ==Features==
-*AD7124 24 bit ADC with 8 differential inputs
+*AD7124-8 24 bit ADC with 8 differential inputs
-Supports 4 load cells or four scales with 4 loads cells in parallel.
+Provides independent channels for each of the 4 load cells or four scales with 4 loads cells in parallel.
 *Instrumentation Amplifiers for load cells.
-Maybe not necessary.  Preliminary tests using the EVAL-AD7124-8 board are able to resolve to .001 lbs (.45 g) without external aplifiers.
+Maybe not necessary.  Preliminary tests using the EVAL-AD7124-8 board are able to resolve to .001 lbs (.45 g) without external amplifiers.
-*Bluetooth Low Energy (BLE) support using a Nordic nRF52
+*Bluetooth Low Energy (BLE) support
-*BMD301 32 bit ARM processor with GPIO lines and eight 16 bit ADC inputs
-*40 pin header plug into a Pi
+Uses the BMD301 containing the Nordic nRF52 32 bit ARM processor with GPIO lines and eight 16 bit ADC inputs.
-*two coin cells to power the BMD301
+*BMD301 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
+*two coin cells to power the BMD301
 *BMD301 (Nordic nRF52) can be programmed via the Pi.