Fixed GND pad on LT3650 charger IC
LT3650 package in kwoo.lbr had a polygon around a through-hole pad toapproximate a large SMD pad connected by a via directly to the groundplane. Created a new package that is like this one but has no via, just anormal SMD pad. Used this package in the power test board, which has no...
Updated design rules for power board
Updated design rules for power board to match DorkbotPDX specifications.This removed some of the DRC errors for the USB port and charger. Thecharger still has a couple that may be from inherently illogicalpackage specification.
Added new charger and pushbutton controller parts
Added LT3650 and LTC2954 to kwoo.lbr. Kevin sent me an updated librarywith these parts previously, but I mistakenly did not import them atthat time.
Disapproved DRC errors on power board
Disapproved of previously approved DRC errors for power board. They areapparently legitimate problems that need to be taken care of.
powerboard placed, needs routing
Fixed gas gauge and charging components
Added extra decoupling capacitor between battery voltage and ground nextto charging circuit to allow board to run with charger but no battery.Connected system side of gas gauge sense resistor to GND to make allcurrent returning to battery go through sense resistor. Removed 0 Ohm...
Added missing components around AVR on power board
Added ISP header, pullup resistor for AVR reset line, and decouplingcapacitors for AVR power lines. Connected ISP header to SPI interface onAVR.
Finished USB interface on power board
Added decoupling capacitors to FTDI chip, changed signaling VCC from USBVCC to AVR VCC so that AVR can signal to FTDI chip. Added USBTX andUSBRX signals between FTDI chip and AVR.
Started to add USB port to power board
Added USB port and USB-UART converter to power board schematic. I thinkthe converter has enough hooked up to it to run without burning up, butit's not hooked up the AVR yet.
Shorted GND to BATT_GND in power schematic
Connected GND and BATT_GND to eachother using a 0 Ohm resistor. I wantto keep the signals separate to ease routing, but they need to beconnected to ensure that all of the current that needs to go through thefuel gauge sense resistor does so.
View all revisions
Also available in: Atom