2.2 Load parts on each board. I do them in this order:
1. 100k reset capacitor
- 2. 470 LED current limiting capacitor
+ 2. 470 LED current limiting resistor
3. Power switch
4. CPU
5. CPU bypass cap
5.1 Flow a small amount of solder onto the center conductor pad so
that it is raised high enough to hit the battery terminal.
- 5.2 Take the metal battery holder cage, align to the circuit board and
+ 5.2 Clean the resulting pad with isopropyl alcohol
+
+ 5.3 Take the metal battery holder cage, align to the circuit board and
clamp the ATtiny85 end in a vise whose jaws are horizontal. This
end has enough board surface on the parts side to allow clamping,
especially if you align the bypass cap inside a gap in the vise
jaws.
- 5.3 Press down on the battery holder so that the exposed terminal
+ 5.4 Press down on the battery holder so that the exposed terminal
makes firm contact with the PCB pad. Solder in place.
- 5.4 Remove from vise.
+ 5.5 Remove from vise.
- 5.5 With the vise jaws vertical again, place the board in the end of
+ 5.6 With the vise jaws vertical again, place the board in the end of
the vise with the remaining battery holder terminal exposed.
- 5.6 Solder in place.
+ 5.7 Solder in place.
- 5.7 Load battery into plastic tray, install in battery holder
+ 5.8 Load battery into plastic tray, install in battery holder
6. System test
-v 20110115 2
-C 40000 40000 0 0 0 title-B.sym
+v 20121123 2
+C 40000 40000 0 0 0 title-B-keithp.sym
C 42000 44500 1 0 0 attiny85.sym
{
T 41995 44475 5 10 0 1 0 0 1
T 41995 44475 5 10 0 1 0 0 1
loadstatus=smt
}
-C 52300 45500 1 0 1 MS5611.sym
+C 52300 45500 1 0 1 MS5607.sym
{
T 50905 47695 5 10 1 1 0 6 1
value=MS5611
T 52305 42295 5 10 0 1 0 6 1
vendor=measspec
T 52305 42295 5 10 0 1 0 6 1
-vendor_part_number=MS5611
+vendor_part_number=MS5607
T 52305 42295 5 10 0 1 0 6 1
loadstatus=smt
}
-C 42300 43300 1 270 0 battery-1.sym
+C 42300 43300 1 270 0 battery.sym
{
T 43200 43000 5 10 0 0 270 0 1
device=BATTERY
T 42300 43300 5 10 0 0 270 0 1
loadstatus=smt
}
-C 42300 43500 1 0 0 3.3V-plus-1.sym
-C 52600 47300 1 0 0 3.3V-plus-1.sym
-C 41300 47000 1 0 0 3.3V-plus-1.sym
-C 41400 44700 1 0 0 gnd-1.sym
-C 52700 45400 1 0 0 gnd-1.sym
+C 42300 43500 1 0 0 3.3V-plus.sym
+C 52600 47300 1 0 0 3.3V-plus.sym
+C 41300 47000 1 0 0 3.3V-plus.sym
+C 41400 44700 1 0 0 gnd.sym
+C 52700 45400 1 0 0 gnd.sym
N 41500 45000 41500 46100 4
-C 41700 46100 1 90 0 capacitor-1.sym
+C 41700 46100 1 90 0 capacitor.sym
{
T 41000 46300 5 10 0 0 90 0 1
device=CAPACITOR
N 50000 46900 50000 47300 4
N 52800 45700 52300 45700 4
N 52800 47300 52300 47300 4
-C 52600 47300 1 270 0 capacitor-1.sym
+C 52600 47300 1 270 0 capacitor.sym
{
T 53300 47100 5 10 0 0 270 0 1
device=CAPACITOR
T 47500 45100 5 10 1 1 0 0 1
netname=\_reset\_
}
-C 48400 45000 1 0 0 led-2.sym
+C 48400 45000 1 0 0 led.sym
{
T 48700 45300 5 10 1 1 180 0 1
refdes=D1
T 48400 45000 5 10 0 1 90 0 1
loadstatus=smt
}
-C 47500 45400 1 0 0 resistor-1.sym
+C 47500 45400 1 0 0 resistor.sym
{
T 47800 45800 5 10 0 0 0 0 1
device=RESISTOR
netname=\_reset\_
}
N 46100 41400 46700 41400 4
-C 46000 41100 1 0 0 gnd-1.sym
+C 46000 41100 1 0 0 gnd.sym
N 46700 43000 46100 43000 4
-C 45900 43000 1 0 0 3.3V-plus-1.sym
-C 46700 41300 1 0 0 pico-ezmate-6.sym
+C 45900 43000 1 0 0 3.3V-plus.sym
+C 46700 41300 1 0 0 conn-6.sym
{
T 47055 43595 5 10 1 1 0 0 1
refdes=J1
T 46695 41275 5 10 0 1 0 0 1
value=6-pin
}
-C 51300 44400 1 0 0 3.3V-plus-1.sym
+C 51300 44400 1 0 0 3.3V-plus.sym
N 48400 45500 48400 45100 4
-C 49200 44800 1 0 0 gnd-1.sym
-C 49100 45600 1 0 0 resistor-1.sym
+C 48700 44800 1 0 0 gnd.sym
+C 49100 45600 1 0 0 resistor.sym
{
T 49400 46000 5 10 0 0 0 0 1
device=RESISTOR
T 43400 41000 5 10 0 0 180 6 1
value=SPDT
}
-C 42700 41100 1 0 0 gnd-1.sym
+C 42700 41100 1 0 0 gnd.sym
N 42800 41400 42800 41500 4
-C 43200 42500 1 90 0 resistor-1.sym
+C 43200 42500 1 90 0 resistor.sym
{
T 42800 42800 5 10 0 0 90 0 1
device=RESISTOR