doc: additional improvements to motortest manual

diff --git a/doc/motortest-installation.inc b/doc/motortest-installation.inc
index 290c7b8fa7d3542511944278321f2ae77c012bb6..af85a918d6ee2814799156a1a5ed099b38dddac0 100644 (file)
--- a/doc/motortest-installation.inc
+++ b/doc/motortest-installation.inc
@@ -9,14 +9,11 @@
        === Power Switch and Battery
 
                In addition to the circuit board itself, EasyMotor needs
-               a power switch and battery to operate. Unlike most other
-               Altus Metrum products, EasyMotor does not work with
-               single-cell LiPo batteries. That's because commonly
-               available inexpensive pressure sensors need 5V, which is
-               more than a single-cell LiPo provides. Any battery that
-               provides from 6.5 to about 15 volts should work. Good
-               choices are the common 9V alkaline battery, or the very
-               small and light A23 12V alkaline batteries.
+               a power switch and battery to operate.  Like many Altus 
+               Metrum products, EasyMotor requires a single-cell LiPo 
+               battery, and has an on-board charging circuit.  The 5V
+               needed for inexpensive pressure sensors is generated 
+               onboard using a switching regulator to boost the voltage.
 
                Because he often mounts EasyMotor to the motor's forward
                bulkhead instead of to the airframe itself, Bdale often
@@ -40,7 +37,8 @@
                by the sensor. Very inexpensive sensors that have a
                “1/8 NPT” threaded input, a “Buick-style” 3-pin connector,
                and typically ship with a short cable and mating
-               connector, are readily available on eBay and AliExpress.
+               connector, are readily available through various vendors
+               including Amazon, eBay, and AliExpress.
 
                To log in-flight chamber pressure, a typical approach
                might be to drill a 1/8" sampling hole all the way

diff --git a/doc/motortest-operation.inc b/doc/motortest-operation.inc
index e38fbe3a2dd79a85ccea960f187634f06d983008..6371ae04c49301f62ad1d72824e25aadb1032a2f 100644 (file)
--- a/doc/motortest-operation.inc
+++ b/doc/motortest-operation.inc
@@ -10,5 +10,7 @@
        data 100 times per second throughout the flight.
 
        After flight, AltosUI can be used to download the flight data,
-       then export it to a comma separated values (CSV) file. Such a
-       file can easily be loaded into a spreadsheet for analysis.
+       view a quick graph of acceleration and pressure with pan and
+       zoom capabilities, then export it to a comma separated values 
+       (CSV) file. Such a file can easily be loaded into a spreadsheet 
+       for analysis.