17341^1
author: epccs
2 layer board of 4.35 x 2.85 inches (110.5 x 72.4 mm)
Uploaded:
August 22, 2019
Shared:
July 17, 2020
Total Price:
$62.00
Gravimetric
A controller board with ATmega324pb set up for measuring event times using ICP1, ICP3, and ICP4 with RJ45 for multi-drop serial. Two UART or digital IO (RX1, TX1, RX2, TX2) have level shift. Four analog channels (0..3) also work as digital IO. Seven 22mA current source for use with loop sensors, SSR, LED, and other. Three 17mA current source for flow sensor (ICP1) and start/stop switches (ICP3, and ICP4). Input capture occurs when when enough current (>7mA) arrives at the 100 Ohm loop sensor. Alternate power input may be enabled (ALT_EN), and power to SBC may be disabled (PIPWR_EN). SPI pins are connected to the SBC. Bus manager (ATmega328pb) is a slave I2C (TWI0) connected to ATmega324pb master (TWI0) and a slave SMbus (TWI1) connected to SBC. Power with 7 thru 36V DC.
Gravimetric
A controller board with ATmega324pb set up for measuring event times using ICP1, ICP3, and ICP4 with RJ45 for multi-drop serial. Two UART or digital IO (RX1, TX1, RX2, TX2) have level shift. Four analog channels (0..3) also work as digital IO. Seven 22mA current source for use with loop sensors, SSR, LED, and other. Three 17mA current source for flow sensor (ICP1) and start/stop switches (ICP3, and ICP4). Input capture occurs when when enough current (>7mA) arrives at the 100 Ohm loop sensor. Alternate power input may be enabled (ALT_EN), and power to SBC may be disabled (PIPWR_EN). SPI pins are connected to the SBC. Bus manager (ATmega328pb) is a slave I2C (TWI0) connected to ATmega324pb master (TWI0) and a slave SMbus (TWI1) connected to SBC. Power with 7 thru 36V DC.
