nRF52832_ButterflyAddOn.v01b
2 layer board of 0.71 x 0.71 inches (17.9 x 17.9 mm)
Uploaded:
August 23, 2017
Shared:
August 23, 2017
Total Price:
$2.45
nRF52 add-on board for Butterfly, perfect as a UART bridge to stream serial over BLE to a smart phone or laptop.
nRF52 add-on board for Butterfly, perfect as a UART bridge to stream serial over BLE to a smart phone or laptop.
SensorTile.v01d
4 layer board of 0.79 x 0.79 inches (20.0 x 20.0 mm)
Uploaded:
August 19, 2017
Shared:
August 19, 2017
Total Price:
$6.10
Continued evolution, removed battery voltage divider on A4, moved indicator led from D13 to A4, removed power-on led, put BME280 on back with CCS811 so VEML6040 can measure direct sun without causing the air quality sensors to go nuts, tightened trace tolerances..
Continued evolution, removed battery voltage divider on A4, moved indicator led from D13 to A4, removed power-on led, put BME280 on back with CCS811 so VEML6040 can measure direct sun without causing the air quality sensors to go nuts, tightened trace tolerances..
solarcharger.v01d
2 layer board of 0.51 x 0.51 inches (12.8 x 12.8 mm)
Uploaded:
August 15, 2017
Shared:
August 15, 2017
Total Price:
$1.25
Redesigned pcb layout according to data sheet, revised resistor values for 4.15 V overvoltage, 3.58 V undervoltage, and 3.71 V battery OK and 3.79 V battery hysteresis. All a better match to the small 3.7 V (4.2 V max) LiPo batteries I am using.
Redesigned pcb layout according to data sheet, revised resistor values for 4.15 V overvoltage, 3.58 V undervoltage, and 3.71 V battery OK and 3.79 V battery hysteresis. All a better match to the small 3.7 V (4.2 V max) LiPo batteries I am using.
