From: Bdale Garbee Date: Fri, 28 Oct 2022 04:31:34 +0000 (-0600) Subject: doc: additional improvements to motortest manual X-Git-Tag: 1.9.12~1^2~7 X-Git-Url: https://git.gag.com/?p=fw%2Faltos;a=commitdiff_plain;h=f57cba7dd193c5608be187d3d81781215ab38a44 doc: additional improvements to motortest manual --- diff --git a/doc/motortest-installation.inc b/doc/motortest-installation.inc index 290c7b8f..af85a918 100644 --- 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 e38fbe3a..6371ae04 100644 --- 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.