Miami Mike's blog archive for November, 2017 - RC Groups
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Archive for November, 2017
Posted by Miami Mike | Nov 23, 2017 @ 07:18 PM | 6,216 Views
A "fuel gauge" for your telemetry screen to display your LiPo pack's charge state as a percentage of full charge.

For OpenTX Versions 2.1 and 2.2

Update, 11/27/2017: Permission was requested by and granted to Martin Phillips ("thebriars") to include this in the Version 2.2 update of his OpenTX Documentation.

Introduction

Here's a "fuel gauge" setup for your Taranis to display your flight battery's state of charge as a percentage, beginning at 100% for a fully-charged pack and decreasing as you consume battery power. It requires a current sensor, such as a FrSky SP-40A - Smart Port 40 Amp Sensor or FrSky SP-150A - Smart Port 150 Amp Sensor.

You'll be able to add alarms and voice announcements that trigger at specific charge states, or at regular time intervals, or each time the charge state decreases by a certain amount so that you'll get announcements at, for example, 100%, 90%, 80%, etc. You'll also be able to bring up announcements whenever you like by flipping a switch.

The battery state will be retained between flights even if the radio is turned off, so a switch is provided to reset the charge state to 100% when the battery is replaced or recharged.

This was designed and tested with OpenTX Version 2.1.9 but should be (and reportedly is) compatible with Version 2.2 as well.

If you have questions, suggestions, requests, or problems, please post in the comment section below.

Begin by configuring the sensor on the Telemetry page.


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