v 20220529 2
C 40000 40000 0 0 0 title-B.sym
{
T 50200 41100 5 10 1 1 0 0 1
title=Turbo the Turtle's Winter Weather Station
T 54200 40100 5 10 1 1 0 0 1
author=Stephan I. Böttcher
T 50200 40400 5 10 1 1 0 0 1
file=turbo.sch
T 50200 40800 5 10 1 1 0 0 1
url=https://codeberg.org/SiB64/turbo_weather
}
C 54100 41600 1 0 0 board.sym
{
T 55425 42200 5 10 1 1 0 4 1
footprint=gseboard
T 55400 42675 5 10 1 1 0 4 1
refdes=BOARD
T 55400 42450 5 10 1 1 0 4 1
value=turbo
T 55400 42025 5 5 1 0 0 4 1
net=GND:1
}
C 42300 46200 1 0 0 header4.sym
{
T 42800 47700 5 10 1 1 0 6 1
device=LPD433 ASK Radio
T 42200 46350 5 10 1 1 0 4 1
refdes=U3
T 42900 46100 5 10 1 1 0 6 1
footprint=SIL_100_4
T 42200 47500 5 10 1 1 0 6 1
value=WRL-10534
}
C 50600 48900 1 180 0 MS5534C.sym
{
T 50000 48200 5 10 1 1 180 4 1
refdes=U2
T 49800 49100 5 10 1 1 180 4 1
value=MS5534C
T 50000 48300 5 10 0 1 180 4 1
footprint=MS5534C
T 48400 49400 5 10 1 1 0 0 1
device=Pressure and Temperature Sensor
}
C 45100 46800 1 0 0 ATtiny404.sym
{
T 47000 49050 5 10 1 1 0 6 1
refdes=U1
T 45400 49250 5 10 0 0 0 0 1
device=ATtiny404
T 46200 46800 5 7 1 1 0 4 1
footprint=SOIC_150_14
T 45100 46800 5 10 0 1 0 0 1
value=ATtiny4x4SS
}
N 47300 47300 48500 47300 4
N 48500 47300 48500 47900 4
N 48500 47900 49100 47900 4
{
T 49000 47950 5 5 1 1 0 6 1
netname=MCLK
}
N 47300 47900 48400 47900 4
N 48400 47900 48400 48100 4
N 48400 48100 49100 48100 4
{
T 49000 48150 5 5 1 1 0 6 1
netname=MOSI
}
N 47300 48200 48300 48200 4
N 48300 48200 48300 48300 4
N 48300 48300 49100 48300 4
{
T 49000 48350 5 5 1 1 0 6 1
netname=MISO
}
N 47300 48500 49100 48500 4
{
T 49000 48550 5 5 1 1 0 6 1
netname=SCLK
}
C 43000 47200 1 90 0 gnd-1.sym
N 42600 46400 43200 46400 4
N 43200 44300 43200 46400 4
{
T 43150 44900 5 10 1 1 90 0 1
netname=ANTENNA
}
N 43200 44300 42800 44300 4
N 42600 46700 42700 46700 4
C 52900 47100 1 90 0 generic-power.sym
{
T 52650 47300 5 10 0 1 90 3 1
net=Vbat:1
T 52675 47300 5 7 1 1 90 3 1
documentation=Vbat
}
C 42700 46900 1 270 0 generic-power.sym
{
T 42950 46700 5 10 0 1 270 3 1
net=Vrf:1
T 42925 46700 5 7 1 1 270 3 1
documentation=Vrf
}
C 53400 45800 1 0 0 LT1761ES5-SD.sym
{
T 54900 47400 5 10 0 1 0 0 1
device=LT1761ES5-BYP
T 54300 47100 5 10 1 1 0 4 1
refdes=U5
T 54800 46100 5 5 1 1 0 8 1
footprint=SOT23_5
T 52700 45800 5 10 1 1 0 0 1
value=LT1761-SD / -BYP
}
C 54200 45200 1 0 0 gnd-1.sym
C 51800 44900 1 270 0 battery-1.sym
{
T 52700 44600 5 10 0 0 270 0 1
device=BATTERY
T 52200 44600 5 10 1 1 0 0 1
refdes=B1
T 53100 44600 5 10 0 0 270 0 1
symversion=0.2
T 52200 44400 5 10 1 1 0 0 1
value=6V
T 51700 44600 5 10 1 1 90 3 1
footprint=KEYSTONE-1025-7
}
C 55700 46400 1 90 0 resistor-2.sym
{
T 55350 46800 5 10 0 0 90 0 1
device=RESISTOR
T 55700 46850 5 10 1 1 90 5 1
refdes=R3
T 55200 46600 5 10 0 1 90 0 1
footprint=C0603.fp
T 55450 46850 5 10 1 1 90 3 1
value=3.3MΩ
T 55000 46600 5 10 0 0 90 0 1
symversion=0.1
}
N 55800 47300 55100 47300 4
N 55100 46400 55600 46400 4
{
T 55000 46450 5 5 1 1 0 0 1
netname=ADJ_CC
}
C 55700 45500 1 90 0 resistor-2.sym
{
T 55350 45900 5 10 0 0 90 0 1
device=RESISTOR
T 55700 45950 5 10 1 1 90 5 1
refdes=R4
T 55200 45700 5 10 0 1 90 0 1
footprint=C0603.fp
T 55450 45950 5 10 1 1 90 3 1
value=2.2MΩ
T 55000 45700 5 10 0 0 90 0 1
symversion=0.1
}
C 55500 45200 1 0 0 gnd-1.sym
N 54300 45500 54300 45800 4
C 51800 45000 1 0 0 generic-power.sym
{
T 52000 45250 5 10 0 1 0 3 1
net=Vbat:1
T 52000 45225 5 7 1 1 0 3 1
documentation=Vbat
}
C 51900 43800 1 0 0 gnd-1.sym
C 53500 49800 1 90 0 generic-power.sym
{
T 53250 50000 5 10 0 1 90 3 1
net=Vbat:1
T 53275 50000 5 7 1 1 90 3 1
documentation=Vbat
}
C 55800 50200 1 270 0 generic-power.sym
{
T 56050 50000 5 10 0 1 270 3 1
net=Vrf:1
T 56025 50000 5 7 1 1 270 3 1
documentation=Vrf
}
C 53400 48500 1 0 0 LT1761ES5-SD.sym
{
T 54900 50100 5 10 0 1 0 0 1
device=LT1761ES5-BYP
T 54300 49800 5 10 1 1 0 4 1
refdes=U4
T 54800 48800 5 5 1 1 0 8 1
footprint=SOT23_5
T 52800 48500 5 10 1 1 0 0 1
value=LT1761-SD
}
C 54200 47900 1 0 0 gnd-1.sym
C 55700 49100 1 90 0 resistor-2.sym
{
T 55350 49500 5 10 0 0 90 0 1
device=RESISTOR
T 55200 49300 5 10 0 1 90 0 1
footprint=C0603.fp
T 55000 49300 5 10 0 0 90 0 1
symversion=0.1
T 55700 49550 5 10 1 1 90 5 1
refdes=R1
T 55450 49550 5 10 1 1 90 3 1
value=330kΩ
}
N 55800 50000 55100 50000 4
N 55100 49100 55600 49100 4
{
T 55000 49150 5 5 1 1 0 0 1
netname=ADJ_RF
}
C 55700 48200 1 90 0 resistor-2.sym
{
T 55350 48600 5 10 0 0 90 0 1
device=RESISTOR
T 55200 48400 5 10 0 1 90 0 1
footprint=C0603.fp
T 55000 48400 5 10 0 0 90 0 1
symversion=0.1
T 55700 48650 5 10 1 1 90 5 1
refdes=R2
T 55450 48650 5 10 1 1 90 3 1
value=220kΩ
}
C 55500 47900 1 0 0 gnd-1.sym
N 54300 48200 54300 48500 4
C 47600 48700 1 90 0 gnd-1.sym
C 45100 48600 1 90 0 vcc-1.sym
C 55800 47500 1 270 0 vcc-1.sym
N 52900 47300 53500 47300 4
C 53500 46400 1 90 0 resistor-2.sym
{
T 53150 46800 5 10 0 0 90 0 1
device=RESISTOR
T 53400 46850 5 10 1 1 90 4 1
refdes=R13
T 53000 46600 5 10 0 1 90 0 1
footprint=C0603.fp
T 53250 46850 5 10 1 1 90 3 1
value=-SD: 10kΩ
T 52800 46600 5 10 0 0 90 0 1
symversion=0.1
}
N 53500 46400 52900 46400 4
{
T 53400 46350 5 5 1 1 0 5 1
netname=BYP
}
C 52000 46200 1 0 0 capacitor-1.sym
{
T 52200 46900 5 10 0 0 0 0 1
device=CAPACITOR
T 52500 46400 5 10 1 1 0 2 1
refdes=C4
T 52200 47100 5 10 0 0 0 0 1
symversion=0.2
T 52200 46900 5 10 0 1 0 0 1
footprint=C0603
T 52000 46000 5 10 1 1 0 0 1
value=-BYP 100nF
}
C 47600 43100 1 270 0 capacitor-4.sym
{
T 48700 42900 5 10 0 0 270 0 1
device=POLARIZED_CAPACITOR
T 47450 42550 5 10 1 1 0 2 1
refdes=C22
T 48300 42900 5 10 0 0 270 0 1
symversion=0.2
T 47700 41700 5 10 1 1 0 0 1
footprint=P1206
T 47700 41450 5 10 1 1 0 0 1
value=10µF
}
C 52000 46200 1 90 0 vcc-1.sym
T 52400 46800 9 7 1 0 0 5 1
(for -BYP option)
C 52100 49000 1 0 0 input-2.sym
{
T 52100 49200 5 10 0 0 0 0 1
net=RF_EN:1
T 52700 49700 5 10 0 0 0 0 1
device=none
T 52750 49100 5 7 1 1 0 1 1
value=RF_EN
}
C 48700 47100 1 180 0 input-2.sym
{
T 48700 46900 5 10 0 0 180 0 1
net=RF_EN:1
T 48100 46400 5 10 0 0 180 0 1
device=none
T 48050 47000 5 7 1 1 180 1 1
value=RF_EN
}
N 45000 47600 45100 47600 4
C 48600 48800 1 270 0 gnd-1.sym
C 49100 47500 1 90 0 vcc-1.sym
N 48900 48700 49100 48700 4
C 50700 42200 1 90 0 capacitor-1.sym
{
T 50000 42400 5 10 0 0 90 0 1
device=CAPACITOR
T 50150 42600 5 10 1 1 0 2 1
refdes=C11
T 49800 42400 5 10 0 0 90 0 1
symversion=0.2
T 50000 42400 5 10 0 1 90 0 1
footprint=C0603
T 50400 42700 5 10 0 1 90 0 1
value=100nF
}
C 51200 42200 1 90 0 capacitor-1.sym
{
T 50500 42400 5 10 0 0 90 0 1
device=CAPACITOR
T 50950 42350 5 10 1 1 180 2 1
refdes=C12
T 50300 42400 5 10 0 0 90 0 1
symversion=0.2
T 50500 42400 5 10 0 1 90 0 1
footprint=C0603
T 50900 42700 5 10 0 1 90 0 1
value=100nF
}
N 50500 42200 53300 42200 4
N 50500 43100 53300 43100 4
C 50300 43100 1 0 0 vcc-1.sym
C 50400 41900 1 0 0 gnd-1.sym
C 47500 42200 1 90 0 capacitor-1.sym
{
T 46800 42400 5 10 0 0 90 0 1
device=CAPACITOR
T 46600 42400 5 10 0 0 90 0 1
symversion=0.2
T 46900 41700 5 10 1 1 0 0 1
footprint=C0603
T 47250 42700 5 10 1 1 180 2 1
refdes=C10
T 46900 41450 5 10 1 1 0 0 1
value=100nF
}
N 47300 42200 49600 42200 4
N 47300 43100 49600 43100 4
C 47200 41900 1 0 0 gnd-1.sym
C 51300 43100 1 270 0 capacitor-4.sym
{
T 52400 42900 5 10 0 0 270 0 1
device=POLARIZED_CAPACITOR
T 51450 42300 5 10 1 1 180 2 1
refdes=C26
T 52000 42900 5 10 0 0 270 0 1
symversion=0.2
T 52000 42900 5 10 0 1 270 0 1
footprint=P1206
T 51600 42900 5 10 0 1 270 0 1
value=10µF
}
C 51900 43100 1 270 0 capacitor-4.sym
{
T 53000 42900 5 10 0 0 270 0 1
device=POLARIZED_CAPACITOR
T 52050 42300 5 10 1 1 180 2 1
refdes=C27
T 52600 42900 5 10 0 0 270 0 1
symversion=0.2
T 52600 42900 5 10 0 1 270 0 1
footprint=P1206
T 52200 42900 5 10 0 1 270 0 1
value=10µF
}
C 52500 43100 1 270 0 capacitor-4.sym
{
T 53600 42900 5 10 0 0 270 0 1
device=POLARIZED_CAPACITOR
T 52650 42300 5 10 1 1 180 2 1
refdes=C28
T 53200 42900 5 10 0 0 270 0 1
symversion=0.2
T 53200 42900 5 10 0 1 270 0 1
footprint=P1206
T 52800 42900 5 10 0 1 270 0 1
value=10µF
}
C 48200 43100 1 270 0 capacitor-4.sym
{
T 49300 42900 5 10 0 0 270 0 1
device=POLARIZED_CAPACITOR
T 48050 42550 5 10 1 1 0 2 1
refdes=C23
T 48900 42900 5 10 0 0 270 0 1
symversion=0.2
T 48900 42900 5 10 0 1 270 0 1
footprint=P1206
T 48500 42900 5 10 0 1 270 0 1
value=10µF
}
C 48800 43100 1 270 0 capacitor-4.sym
{
T 49900 42900 5 10 0 0 270 0 1
device=POLARIZED_CAPACITOR
T 48650 42550 5 10 1 1 0 2 1
refdes=C24
T 49500 42900 5 10 0 0 270 0 1
symversion=0.2
T 49500 42900 5 10 0 1 270 0 1
footprint=P1206
T 49100 42900 5 10 0 1 270 0 1
value=10µF
}
C 49400 43100 1 270 0 capacitor-4.sym
{
T 50500 42900 5 10 0 0 270 0 1
device=POLARIZED_CAPACITOR
T 49250 42550 5 10 1 1 0 2 1
refdes=C25
T 50100 42900 5 10 0 0 270 0 1
symversion=0.2
T 50100 42900 5 10 0 1 270 0 1
footprint=P1206
T 49700 42900 5 10 0 1 270 0 1
value=10µF
}
C 53100 43100 1 270 0 capacitor-4.sym
{
T 54200 42900 5 10 0 0 270 0 1
device=POLARIZED_CAPACITOR
T 53250 42300 5 10 1 1 180 2 1
refdes=C29
T 53800 42900 5 10 0 0 270 0 1
symversion=0.2
T 53800 42900 5 10 0 1 270 0 1
footprint=P1206
T 53400 42900 5 10 0 1 270 0 1
value=10µF
}
C 47100 43100 1 0 0 generic-power.sym
{
T 47300 43350 5 10 0 1 0 3 1
net=Vrf:1
T 47300 43325 5 7 1 1 0 3 1
documentation=Vrf
}
C 43500 49900 1 270 0 led-3.sym
{
T 44150 48950 5 10 0 0 270 0 1
device=LED
T 44050 49350 5 10 1 1 0 0 1
refdes=D1
T 43400 49200 5 10 1 1 0 6 1
footprint=C0603
T 43400 49400 5 10 1 1 0 6 1
value=SMD-LED
}
C 43600 49100 1 270 0 resistor-2.sym
{
T 43950 48700 5 10 0 0 270 0 1
device=RESISTOR
T 43700 48650 5 10 1 1 90 4 1
refdes=R11
T 44100 48900 5 10 0 1 270 0 1
footprint=C0603.fp
T 43500 48650 5 10 1 1 90 4 1
value=10kΩ
T 44300 48900 5 10 0 0 270 0 1
symversion=0.1
}
N 43700 48200 45100 48200 4
{
T 44200 48250 5 5 1 1 0 6 1
netname=LED
}
C 52600 45000 1 270 0 capacitor-4.sym
{
T 53700 44800 5 10 0 0 270 0 1
device=POLARIZED_CAPACITOR
T 53300 44800 5 10 0 0 270 0 1
symversion=0.2
T 53300 44800 5 10 0 1 270 0 1
footprint=P1206
T 52450 44450 5 10 1 1 0 2 1
refdes=C20
T 52600 43900 5 10 0 1 0 0 1
value=10µF
}
C 53200 45000 1 270 0 capacitor-4.sym
{
T 54300 44800 5 10 0 0 270 0 1
device=POLARIZED_CAPACITOR
T 53900 44800 5 10 0 0 270 0 1
symversion=0.2
T 53900 44800 5 10 0 1 270 0 1
footprint=P1206
T 53050 44450 5 10 1 1 0 2 1
refdes=C21
T 53200 43900 5 10 0 1 0 0 1
value=10µF
}
N 53400 45000 52000 45000 4
N 53400 44100 52000 44100 4
N 52000 44100 52000 44200 4
N 52000 45000 52000 44900 4
C 41600 41600 1 0 0 DB9-1.sym
{
T 42600 44500 5 10 0 0 0 0 1
device=DB9
T 41800 44800 5 10 1 1 0 0 1
refdes=CONN1
T 41800 41300 5 10 1 1 0 0 1
footprint=SUBD9_PINS
T 41800 41100 5 10 1 1 0 0 1
value=D9 pigtail
}
C 43100 43900 1 90 0 gnd-1.sym
C 43100 42700 1 90 0 gnd-1.sym
C 42800 42100 1 270 0 generic-power.sym
{
T 43050 41900 5 10 0 1 270 3 1
net=Vbat:1
T 43025 41900 5 7 1 1 270 3 1
documentation=Vbat
}
C 43100 42100 1 90 0 gnd-1.sym
C 43600 47200 1 0 0 input-2.sym
{
T 43600 47400 5 10 0 0 0 0 1
net=RxD:1
T 44200 47900 5 10 0 0 0 0 1
device=none
T 44250 47300 5 7 1 1 0 1 1
value=RxD
}
N 45000 47300 45100 47300 4
C 44200 42600 1 180 0 input-2.sym
{
T 44200 42400 5 10 0 0 180 0 1
net=RxD:1
T 43600 41900 5 10 0 0 180 0 1
device=none
T 43550 42500 5 7 1 1 180 1 1
value=RxD
}
C 44200 43200 1 180 0 input-2.sym
{
T 44200 43000 5 10 0 0 180 0 1
net=TxD:1
T 43600 42500 5 10 0 0 180 0 1
device=none
T 43550 43100 5 7 1 1 180 1 1
value=TxD
}
C 48700 47700 1 180 0 input-2.sym
{
T 48700 47500 5 10 0 0 180 0 1
net=Reset:1
T 48100 47000 5 10 0 0 180 0 1
device=none
T 48050 47600 5 7 1 1 180 1 1
value=Reset
}
C 44200 43800 1 180 0 input-2.sym
{
T 44200 43600 5 10 0 0 180 0 1
net=Reset:1
T 43600 43100 5 10 0 0 180 0 1
device=none
T 43550 43700 5 7 1 1 180 1 1
value=Reset
}
C 43100 43300 1 90 0 gnd-1.sym
C 44800 41600 1 90 0 input-2.sym
{
T 44600 41600 5 10 0 0 90 0 1
net=Reset:1
T 44100 42200 5 10 0 0 90 0 1
device=none
T 44700 42250 5 7 1 1 90 1 1
value=Reset
}
C 44300 42600 1 0 0 gnd-1.sym
C 45600 46100 1 0 0 generic-power.sym
{
T 45800 46350 5 10 0 1 0 3 1
net=Vrf:1
T 45800 46325 5 7 1 1 0 3 1
documentation=Vrf
}
C 45900 44100 1 90 0 resistor-2.sym
{
T 45550 44500 5 10 0 0 90 0 1
device=RESISTOR
T 45400 44300 5 10 0 1 90 0 1
footprint=C0603.fp
T 45200 44300 5 10 0 0 90 0 1
symversion=0.1
T 45800 44550 5 10 1 1 90 4 1
refdes=R6
T 45650 44550 5 10 1 1 90 3 1
value=10kΩ NTC
}
C 45900 45200 1 90 0 resistor-2.sym
{
T 45550 45600 5 10 0 0 90 0 1
device=RESISTOR
T 45400 45400 5 10 0 1 90 0 1
footprint=C0603.fp
T 45200 45400 5 10 0 0 90 0 1
symversion=0.1
T 45800 45650 5 10 1 1 90 4 1
refdes=R5
T 45650 45650 5 10 1 1 90 3 1
value=10kΩ
}
C 46700 44100 1 90 0 capacitor-1.sym
{
T 46000 44300 5 10 0 0 90 0 1
device=CAPACITOR
T 45800 44300 5 10 0 0 90 0 1
symversion=0.2
T 46000 44300 5 10 0 1 90 0 1
footprint=C0603
T 46600 44500 5 10 1 1 0 2 1
refdes=C1
T 46600 44100 5 10 0 1 0 0 1
value=100nF
}
N 46500 44100 45800 44100 4
N 45800 45000 46500 45000 4
C 45700 43800 1 0 0 gnd-1.sym
C 44200 45100 1 0 0 input-2.sym
{
T 44200 45300 5 10 0 0 0 0 1
net=ADC_T:1
T 44800 45800 5 10 0 0 0 0 1
device=none
T 44850 45200 5 7 1 1 0 1 1
value=ADC_T
}
N 45600 45200 45800 45200 4
N 45800 45200 45800 45000 4
C 46300 45100 1 0 0 input-2.sym
{
T 46300 45300 5 10 0 0 0 0 1
net=ADC_V:1
T 46900 45800 5 10 0 0 0 0 1
device=none
T 46950 45200 5 7 1 1 0 1 1
value=ADC_V
}
C 43600 48400 1 0 0 input-2.sym
{
T 43600 48600 5 10 0 0 0 0 1
net=ADC_V:1
T 44200 49100 5 10 0 0 0 0 1
device=none
T 44250 48500 5 7 1 1 0 1 1
value=ADC_V
}
C 43600 47800 1 0 0 input-2.sym
{
T 43600 48000 5 10 0 0 0 0 1
net=ADC_T:1
T 44200 48500 5 10 0 0 0 0 1
device=none
T 44250 47900 5 7 1 1 0 1 1
value=ADC_T
}
N 42600 47300 42700 47300 4
N 45000 47900 45100 47900 4
N 45000 48500 45100 48500 4
C 49600 46100 1 0 0 generic-power.sym
{
T 49800 46350 5 10 0 1 0 3 1
net=Vbat:1
T 49800 46325 5 7 1 1 0 3 1
documentation=Vbat
}
C 48000 44100 1 90 0 resistor-2.sym
{
T 47650 44500 5 10 0 0 90 0 1
device=RESISTOR
T 47500 44300 5 10 0 1 90 0 1
footprint=C0603.fp
T 47300 44300 5 10 0 0 90 0 1
symversion=0.1
T 47900 44550 5 10 1 1 90 4 1
refdes=R8
T 47750 44550 5 10 1 1 90 3 1
value=10kΩ
}
C 48800 44100 1 90 0 capacitor-1.sym
{
T 48100 44300 5 10 0 0 90 0 1
device=CAPACITOR
T 47900 44300 5 10 0 0 90 0 1
symversion=0.2
T 48100 44300 5 10 0 1 90 0 1
footprint=C0603
T 48700 44500 5 10 1 1 0 2 1
refdes=C2
T 48700 44100 5 10 0 1 0 0 1
value=100nF
}
N 48600 44100 47900 44100 4
N 47900 45000 48600 45000 4
N 47700 45200 47900 45200 4
N 47900 45200 47900 45000 4
C 48000 45200 1 90 0 resistor-2.sym
{
T 47900 45650 5 10 1 1 90 4 1
refdes=R7
T 47750 45650 5 10 1 1 90 3 1
value=10kΩ
T 47650 45600 5 10 0 0 90 0 1
device=RESISTOR
T 47500 45400 5 10 0 1 90 0 1
footprint=C0603.fp
T 47300 45400 5 10 0 0 90 0 1
symversion=0.1
}
C 47800 43800 1 0 0 gnd-1.sym
C 47700 46100 1 0 0 generic-power.sym
{
T 47900 46350 5 10 0 1 0 3 1
net=Vrf:1
T 47900 46325 5 7 1 1 0 3 1
documentation=Vrf
}
C 49900 44100 1 90 0 resistor-2.sym
{
T 49550 44500 5 10 0 0 90 0 1
device=RESISTOR
T 49400 44300 5 10 0 1 90 0 1
footprint=C0603.fp
T 49200 44300 5 10 0 0 90 0 1
symversion=0.1
T 49800 44550 5 10 1 1 90 4 1
refdes=R10
T 49650 44550 5 10 1 1 90 3 1
value=1MΩ
}
C 50700 44100 1 90 0 capacitor-1.sym
{
T 50000 44300 5 10 0 0 90 0 1
device=CAPACITOR
T 49800 44300 5 10 0 0 90 0 1
symversion=0.2
T 50000 44300 5 10 0 1 90 0 1
footprint=C0603
T 50400 44600 5 10 1 1 180 2 1
refdes=C3
T 50100 43900 5 10 0 1 0 0 1
value=100nF
}
N 49800 44100 51000 44100 4
N 49800 45000 51000 45000 4
N 49600 45200 49800 45200 4
N 49800 45200 49800 45000 4
C 49900 45200 1 90 0 resistor-2.sym
{
T 49550 45600 5 10 0 0 90 0 1
device=RESISTOR
T 49400 45400 5 10 0 1 90 0 1
footprint=C0603.fp
T 49200 45400 5 10 0 0 90 0 1
symversion=0.1
T 49800 45650 5 10 1 1 90 4 1
refdes=R9
T 49650 45650 5 10 1 1 90 3 1
value=10MΩ
}
C 49700 43800 1 0 0 gnd-1.sym
C 48200 45100 1 0 0 input-2.sym
{
T 48200 45300 5 10 0 0 0 0 1
net=ADC_B:1
T 48800 45800 5 10 0 0 0 0 1
device=none
T 48850 45200 5 7 1 1 0 1 1
value=ADC_B
}
N 44700 42900 44700 43400 4
C 44500 44200 1 0 0 vcc-1.sym
N 44700 44200 44700 44300 4
C 44600 44300 1 270 0 resistor-2.sym
{
T 44950 43900 5 10 0 0 270 0 1
device=RESISTOR
T 44700 43850 5 10 1 1 90 4 1
refdes=R12
T 45100 44100 5 10 0 1 270 0 1
footprint=C0603.fp
T 44900 43850 5 10 1 1 90 4 1
value=∞Ω
T 45300 44100 5 10 0 2 270 0 1
symversion=0.1
T 44550 43850 5 5 1 1 90 3 1
note=not needed
}
N 43700 49000 43700 49100 4
{
T 43650 49000 5 5 1 1 90 0 1
netname=LEDR
}
C 43600 47500 1 0 0 input-2.sym
{
T 43600 47700 5 10 0 0 0 0 1
net=ADC_B:1
T 44200 48200 5 10 0 0 0 0 1
device=none
T 44250 47600 5 7 1 1 0 1 1
value=ADC_B
}
C 43800 50200 1 180 0 gnd-1.sym
T 52900 46900 9 7 1 0 90 5 1
(for -SD option)
C 43600 46900 1 0 0 input-2.sym
{
T 43600 47100 5 10 0 0 0 0 1
net=TxD:1
T 44200 47600 5 10 0 0 0 0 1
device=none
T 44250 47000 5 7 1 1 0 1 1
value=TxD
}
N 45000 47000 45100 47000 4
C 44700 47100 1 180 0 input-2.sym
{
T 44700 46900 5 10 0 0 180 0 1
net=TxD:1
T 44100 46400 5 10 0 0 180 0 1
device=none
T 44050 47000 5 7 1 1 180 1 1
value=TxD
}
N 43300 47000 42600 47000 4
C 50800 45000 1 270 0 capacitor-4.sym
{
T 51900 44800 5 10 0 0 270 0 1
device=POLARIZED_CAPACITOR
T 51500 44800 5 10 0 0 270 0 1
symversion=0.2
T 51500 44800 5 10 0 1 270 0 1
footprint=P1206
T 50950 44200 5 10 1 1 180 2 1
refdes=C30
T 50700 43900 5 10 0 1 0 0 1
value=10µF
}
T 47700 40900 9 10 1 0 0 0 2
C20…C30, 1206
use 10µF 25V X7R
T 46150 40900 9 10 1 0 0 0 2
C1…C19, 0603
use 100nF X7R
T 46750 40450 9 10 1 0 0 0 1
All R are size 0603
T 52700 50350 9 10 1 0 0 0 2
The Vrf regulator will be shut down
when the sensor is idle. Use an —SD part.
T 52650 47700 9 10 1 0 0 0 1
The Vcc regulator may use a  —BYP part.
T 44950 49500 9 10 1 0 0 0 5
• SPI for SCK, MISO, MOSI
• Timer PWM output for MCLK
• UART TxD for output
• UART RxD (optional) for configuration
• Any  IO for RF_EN
T 50050 45500 9 10 1 0 0 0 3
High Impedance
V_bat monitor 
drains ~½µA
T 46150 45550 9 10 1 0 0 0 3
NTC bridge
powered down
when idle
T 43800 41350 9 10 1 0 0 0 3
UPDI (Unified Program 
and Debug Interface)
via J1 or CONN1
C 44000 43100 1 270 0 header3.sym
{
T 45200 43000 5 10 0 0 270 0 1
device=CONNECTOR_3
T 44400 43350 5 10 1 1 0 4 1
refdes=J1
T 44900 42900 5 10 0 1 0 0 1
footprint=SIL_100_3
T 44900 43100 5 10 0 1 0 0 1
value=HE_100_1×3
}
C 44300 42900 1 180 0 vcc-1.sym
L 55300 46300 55000 46300 3 10 1 0 -1 -1
L 55000 46300 55075 46325 3 10 1 0 -1 -1
L 55000 46300 55075 46275 3 10 1 0 -1 -1
T 55200 46300 9 5 1 0 0 5 1
30nA
T 54400 43800 9 10 1 0 0 0 5
Vcc  = 1.22V × (1+R₃/R₄) 
            + 30nA × R₃
Vcc  = 3.15V
Vrf  = 3.06V
I_R₃ = 0.6 µA