W1416 HW Block Diagram
Version Date Author Description 0.2 6.10.2014 Jluk Illumination powering changed to control PCB 0.3 7.10.2014 Jluk Known components ungrayed 0.4 8.10.2014 Jluk Test interface added 0.5 9.10.2014 Jluk Tablet presence logic update 0.6 13.10.2014 Jluk Updates to touch 0.7 16.10.2014 JLUk 12Vdc. LED drive updated. 0.81 22.10.2014 Jluk Dock PCB: Illumination LEDs removed. 3V3 power added 0.9 28.10.2014 Jluk Dock pcb updated: Illumination LED strip support.
Main switch Illum LEDs FET x 3 I2C PWM cntr connector 5V in 26A 6x Solenoid connector Tablet slot Dock address = ’x00’ Tablet slot Status LEDs Tablet slot Tablet slot Tablet slot Tablet slot IO expander x 2 IEC Mains connector Integrated EMC-Filter FN9222SR-6-06 Power 5V 130W 26A (tablet charge max 12A for 6 tablets) Meanwell RS-150-5 Bluetooth * 2.4GHz WLAN. 2.4GHz Eth conn (back panel) Bar code reader Dock 1 conn. Raspberry Pi3 FET x 3 Eth conn. I2C PWM controller Usb conn.
Dock PCB LEDs 12Vdc connector 5Vdc connector Tablet slot Tablet slot Tablet slot Tablet slot Tablet slot Tablet slot Illumination LEDs 6x Over current limit (each slot) TPS2069 LED driver LEDs (6) 1-wire I2C A2 = VCC Address config … presence 6 x IO 6x IO Expander 1 Pcf8575 (16-bit) +5V Expander 2 Pcf8575 (16-bit) I2C A1, A0 GND … 1x IO (interrupt; change state) 6x IO (1-wire) Solenoid conn. Solenoid conn. Solenoid conn. Solenoid conn. Solenoid conn. Solenoid conn.
