Move CAPTOUCH_~RST from BOOT_CFG_03 to GPIO1_IO05/P3.33 (was CSI_P2_PWDN), add a 10k pull-down to LCD_~RESET, make the corresponding changes to the BoM and netlist/layout
by
Eric Kuzmenko
6 years 4 months
Rename all diff pairs such that they end in _P/_N rather than just P/N (underscore needed for diff pair routing)
by
Eric Kuzmenko
6 years 4 months
Update the component properties for the SMD right-angled push buttoms
by
Eric Kuzmenko
6 years 4 months
Replace camera's schottky+resistor level-shifter circuit with the more functional TXB0101 dedicated IC
by
Eric Kuzmenko
6 years 4 months
Add proper WWAN reset circuit using a MMBT2222A NPN BJT along with a 100nF cap and a TVS diode, make needed adjustements to the WWAN's SIM card circuit (UIM-CLK and UIM-RESET caps are NC & added 4.7k series resistor to SIM_DETECT_O#), assign the MMBT2222A footprint to KiCad's official SOT-23 footprint (identical to the spec sheet's recommended land pattern)
by
Eric Kuzmenko
6 years 4 months
Add pull-up resistor to nCS pin of the NOR flash chip, make electrolytic caps tantalums again due to a the price difference not being significant
by
Eric Kuzmenko
6 years 4 months
Add mounting holes to the schematic and assign the associated M2 hole footprint, add fiducial marks to schematic and assign the associated 1mm diameter copper with 2mm diameter solder mask opening footprint, make various visual adjustments throughout the schematic
by
Eric Kuzmenko
6 years 4 months
For better BoM generation, added placeholders for SOM, disṕlay, camera, WWAN card and wifi/BT card.
by
Christian Schilmoeller
6 years 4 months
Add FDV301N footprint based on the manufacturer's given recommended land pattern, use lower ESR 220uF tantalum capacitors in place of previously selected ones, re-export the BoM
by
Eric Kuzmenko
6 years 4 months