megametrum.sch
T 77700 40100 9 10 1 0 0 0 1
http://altusmetrum.com/
-N 72500 70200 75400 70200 4
+N 71700 70200 74600 70200 4
{
-T 72500 70300 5 10 1 1 0 0 1
+T 71700 70300 5 10 1 1 0 0 1
netname=reset_n
}
N 45300 61700 44400 61700 4
netname=beeper
}
N 67700 69100 67800 69100 4
-C 80700 70500 1 0 0 conn-2.sym
+C 81300 70500 1 0 0 conn-2.sym
{
-T 80300 71100 5 10 0 1 0 0 1
+T 80900 71100 5 10 0 1 0 0 1
footprint=ufl
-T 81005 71145 5 10 1 1 0 0 1
+T 81605 71145 5 10 1 1 0 0 1
refdes=J10
-T 81000 70300 5 10 1 1 0 0 1
+T 81600 70300 5 10 1 1 0 0 1
value=U.FL
-T 80700 70500 5 10 0 0 0 0 1
+T 81300 70500 5 10 0 0 0 0 1
vendor_part_number=WM5587CT-ND
-T 80700 70500 5 10 0 0 0 0 1
+T 81300 70500 5 10 0 0 0 0 1
vendor=digikey
-T 80700 70500 5 10 0 1 0 0 1
+T 81300 70500 5 10 0 1 0 0 1
device=CONNECTOR
-T 80700 70500 5 10 0 1 0 0 1
+T 81300 70500 5 10 0 1 0 0 1
loadstatus=smt
}
-C 80800 71800 1 90 0 inductor.sym
+C 81400 71800 1 90 0 inductor.sym
{
-T 80300 72000 5 10 0 0 90 0 1
+T 80900 72000 5 10 0 0 90 0 1
device=INDUCTOR
-T 81050 72550 5 10 1 1 180 0 1
+T 81650 72550 5 10 1 1 180 0 1
refdes=L5
-T 80100 72000 5 10 0 0 90 0 1
+T 80700 72000 5 10 0 0 90 0 1
symversion=0.1
-T 81300 72100 5 10 1 1 180 0 1
+T 81900 72100 5 10 1 1 180 0 1
value=47nH
-T 80800 71800 5 10 0 0 0 0 1
+T 81400 71800 5 10 0 0 0 0 1
footprint=0402
-T 80800 71800 5 10 0 0 0 0 1
+T 81400 71800 5 10 0 0 0 0 1
vendor_part_number=490-2631-1-ND
-T 80800 71800 5 10 0 0 0 0 1
+T 81400 71800 5 10 0 0 0 0 1
vendor=digikey
-T 80800 71800 5 10 0 1 0 0 1
+T 81400 71800 5 10 0 1 0 0 1
loadstatus=smt
}
-C 80500 72900 1 0 0 3.3V-plus.sym
-N 80700 72900 80700 72700 4
-C 80300 71800 1 90 0 capacitor.sym
+C 81100 72900 1 0 0 3.3V-plus.sym
+N 81300 72900 81300 72700 4
+C 80900 71800 1 90 0 capacitor.sym
{
-T 79600 72000 5 10 0 0 90 0 1
+T 80200 72000 5 10 0 0 90 0 1
device=CAPACITOR
-T 79950 72600 5 10 1 1 180 0 1
+T 80550 72600 5 10 1 1 180 0 1
refdes=C34
-T 79400 72000 5 10 0 0 90 0 1
+T 80000 72000 5 10 0 0 90 0 1
symversion=0.1
-T 80300 71795 5 10 0 1 90 0 1
+T 80900 71795 5 10 0 1 90 0 1
footprint=0402
-T 79400 71900 5 10 1 1 0 0 1
+T 80000 71900 5 10 1 1 0 0 1
value=0.001uF
-T 80300 71800 5 10 0 0 0 0 1
+T 80900 71800 5 10 0 0 0 0 1
vendor_part_number=445-2651-1-ND
-T 80300 71800 5 10 0 0 0 0 1
+T 80900 71800 5 10 0 0 0 0 1
vendor=digikey
-T 80300 71800 5 10 0 1 0 0 1
+T 80900 71800 5 10 0 1 0 0 1
loadstatus=smt
}
-N 80100 72800 80700 72800 4
-N 80700 71000 80700 71800 4
-N 80100 70600 80700 70600 4
-N 79400 71000 80700 71000 4
+N 80700 72800 81300 72800 4
+N 81300 71000 81300 71800 4
+N 80700 70600 81300 70600 4
+N 78600 71000 81300 71000 4
T 81700 45500 9 10 1 0 0 0 2
SMA is optional
default is wire whip
-C 74700 71700 1 0 0 3.3V-plus.sym
-N 75400 70600 74700 70600 4
-N 74900 70600 74900 71700 4
-N 75400 71000 74900 71000 4
-N 73700 67000 72300 67000 4
+C 73900 71700 1 0 0 3.3V-plus.sym
+N 74600 70600 73900 70600 4
+N 74100 70600 74100 71700 4
+N 74600 71000 74100 71000 4
+N 72900 67000 71500 67000 4
{
-T 72300 67100 5 10 1 1 0 0 1
+T 71500 67100 5 10 1 1 0 0 1
netname=v_charge
}
-N 74000 69400 75400 69400 4
+N 73200 69400 74600 69400 4
{
-T 74000 69500 5 10 1 1 0 0 1
+T 73200 69500 5 10 1 1 0 0 1
netname=tx3
}
-N 74000 69000 75400 69000 4
+N 73200 69000 74600 69000 4
{
-T 74000 69100 5 10 1 1 0 0 1
+T 73200 69100 5 10 1 1 0 0 1
netname=rx3
}
C 71300 59700 1 0 0 3.3V-plus.sym
loadstatus=smt
}
C 72800 58100 1 0 0 gnd.sym
-C 77300 65700 1 0 0 gnd.sym
+C 76500 65700 1 0 0 gnd.sym
N 47700 63300 47800 63300 4
N 46500 64000 46500 64200 4
N 46500 64100 47800 64100 4
T 68100 42700 5 10 0 1 0 0 1
loadstatus=smt
}
-N 80100 70600 80100 71800 4
+N 80700 70100 80700 71800 4
C 64600 43200 1 270 0 capacitor.sym
{
T 65300 43000 5 10 0 0 270 0 1
T 45300 60500 5 10 0 1 0 0 1
vendor_part_number=W25Q64FVSSIG-ND
}
-N 80100 72700 80100 72800 4
-T 81600 70700 9 10 1 0 0 0 1
+N 80700 72700 80700 72800 4
+T 82200 70700 9 10 1 0 0 0 1
GPS
C 56500 42600 1 0 0 MCP73831.sym
{
T 45800 72800 5 10 1 1 0 0 1
netname=gps_pps
}
-N 79400 68600 80400 68600 4
+N 78600 68600 79800 68600 4
{
-T 79700 68700 5 10 1 1 0 0 1
+T 79100 68700 5 10 1 1 0 0 1
netname=gps_pps
}
C 45400 72800 1 0 0 gnd.sym
T 70600 53800 5 10 1 1 0 0 1
netname=radio_marc_isr
}
-C 75400 66200 1 0 0 UBLOX-MAX.sym
+C 74600 66200 1 0 0 UBLOX-MAX.sym
{
-T 75795 71495 5 10 1 1 0 0 1
+T 74995 71495 5 10 1 1 0 0 1
refdes=U10
-T 76895 70795 5 10 1 1 0 0 1
+T 76095 70795 5 10 1 1 0 0 1
device=U-Blox MAX
-T 75400 66200 5 10 0 1 0 0 1
+T 74600 66200 5 10 0 1 0 0 1
footprint=UBLOX-MAX
}
-N 77400 66000 77400 66200 4
-N 77400 66100 77800 66100 4
-N 77800 66100 77800 66200 4
-N 77400 66100 77000 66100 4
+N 76600 66000 76600 66200 4
+N 76600 66100 77000 66100 4
N 77000 66100 77000 66200 4
-C 80000 70300 1 0 0 gnd.sym
-T 81600 72000 9 10 1 0 0 0 2
+N 76600 66100 76200 66100 4
+N 76200 66100 76200 66200 4
+C 80600 69800 1 0 0 gnd.sym
+T 81000 69100 9 10 1 0 0 0 2
u-blox suggests L5 be
Murata LQG15HS27NJ02
-T 73000 65500 9 10 1 0 0 0 6
+T 72200 65500 9 10 1 0 0 0 6
v_charge can be 4.2 volts
v_bckp must be 1.4 - 3.6 volts
i_bckp on the order of 22uA
56k should drop 1.232 volts,
and consume 27 microwatts
-C 74600 67100 1 180 0 resistor.sym
+C 73800 67100 1 180 0 resistor.sym
{
-T 74300 66700 5 10 0 0 180 0 1
+T 73500 66700 5 10 0 0 180 0 1
device=RESISTOR
-T 73700 67200 5 10 1 1 0 0 1
+T 72900 67200 5 10 1 1 0 0 1
refdes=R32
-T 74300 67200 5 10 1 1 0 0 1
+T 73500 67200 5 10 1 1 0 0 1
value=56k
-T 74600 67100 5 10 0 1 180 0 1
+T 73800 67100 5 10 0 1 180 0 1
footprint=0402
-T 74600 67100 5 10 0 1 180 0 1
+T 73800 67100 5 10 0 1 180 0 1
vendor=digikey
-T 74600 67100 5 10 0 1 180 0 1
+T 73800 67100 5 10 0 1 180 0 1
vendor_part_number=RHM56.0KLCT-ND
-T 74600 67100 5 10 0 1 90 0 1
+T 73800 67100 5 10 0 1 90 0 1
loadstatus=smt
}
-N 74600 67000 75400 67000 4
-C 73800 70500 1 0 0 resistor.sym
+N 73800 67000 74600 67000 4
+C 73000 70500 1 0 0 resistor.sym
{
-T 74100 70900 5 10 0 0 0 0 1
+T 73300 70900 5 10 0 0 0 0 1
device=RESISTOR
-T 74150 70950 5 10 1 1 180 0 1
+T 73350 70950 5 10 1 1 180 0 1
refdes=R33
-T 73795 70500 5 10 0 1 0 0 1
+T 72995 70500 5 10 0 1 0 0 1
footprint=0402
-T 74300 70800 5 10 1 1 0 0 1
+T 73500 70800 5 10 1 1 0 0 1
value=3.3k
-T 73800 70500 5 10 0 1 270 0 1
+T 73000 70500 5 10 0 1 270 0 1
vendor_part_number=311-3.30KLRCT-ND
-T 73800 70500 5 10 0 0 270 0 1
+T 73000 70500 5 10 0 0 270 0 1
vendor=digikey
-T 73800 70500 5 10 0 1 270 0 1
+T 73000 70500 5 10 0 1 270 0 1
loadstatus=smt
}
-N 73800 70600 73800 70200 4
-T 71500 70800 9 10 1 0 0 0 9
+N 73000 70600 73000 70200 4
+T 70700 70800 9 10 1 0 0 0 9
don't drive reset_n high!
mcp130t is open drain
pull-up here? unclear!
don't use reset_n at all?
+T -72100 -78700 8 10 0 1 0 0 1
+vendor_part_number=MMA7260QT-ND
+T -72100 -78700 8 10 0 1 0 0 1
+vendor_part_number=MCP9700-E/TO-ND
+T -72100 -78700 8 10 0 1 0 0 1
+vendor_part_number=MMA7260QT-ND
+T -72100 -78700 8 10 0 1 0 0 1
+vendor_part_number=MCP9700-E/TO-ND
+C 79900 71000 1 0 0 antenna.sym
+{
+T 80100 71400 5 10 0 0 0 0 1
+device=ANTENNA
+T 80100 71200 5 10 1 1 0 0 1
+refdes=A1
+T 80100 71600 5 10 0 0 0 0 1
+symversion=0.1
+T 79900 71000 5 10 0 1 0 0 1
+footprint=GP1575.18
+T 79900 71000 5 10 0 1 0 0 1
+loadstatus=throughhole
+T 79900 71000 5 10 0 1 0 0 1
+vendor=digikey
+T 79900 71000 5 10 0 1 0 0 1
+vendor_part_number=931-1019-ND
+}
+C 80200 70100 1 90 0 capacitor.sym
+{
+T 79500 70300 5 10 0 0 90 0 1
+device=CAPACITOR
+T 79300 70300 5 10 0 0 90 0 1
+symversion=0.1
+T 80200 70100 5 10 0 0 180 0 1
+footprint=0402
+T 80200 70100 5 10 0 1 90 0 1
+loadstatus=noload
+T 79500 70700 5 10 1 1 0 0 1
+refdes=C35
+T 78800 70200 5 10 1 1 0 0 1
+value=tuning
+}
+N 80000 70100 80700 70100 4