ao-tools: don't do 'm 0' after 'E 0' since EasyMotor doesn't support it

[fw/altos] / doc / motortest-installation.inc

diff --git a/doc/motortest-installation.inc b/doc/motortest-installation.inc
index 290c7b8fa7d3542511944278321f2ae77c012bb6..1edee68d4c57293bb32a12e53d854b623a9863c2 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
        === 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
 
                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
                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
 
                To log in-flight chamber pressure, a typical approach
                might be to drill a 1/8" sampling hole all the way


@@ -49,3 +47,8 @@
                NPT” pipe tap. Fill the touch hole with grease, screw in
                the pressure sensor, and attach the sensor leads to
                EasyMotor.
                NPT” pipe tap. Fill the touch hole with grease, screw in
                the pressure sensor, and attach the sensor leads to
                EasyMotor.

+
+               If you aren't up for machining closures yourself, 
+               link:http://lokiresearch.com[Loki Research] sells 
+               54mm and 75mm "experimental bulkheads" with threaded
+               sensor ports that can be used with snap ring cases.