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analog reading pfutzing for better battery stability?
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@ -75,7 +75,7 @@ void setup()
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pinMode(RESETPIN, INPUT);
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digitalWrite(RESETPIN, HIGH);
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analogReference(EXTERNAL); // 3.3v external, or 1.2v internal. We need 1.2 internal for the battery level, which means we're gonna have to do something about the paddles :/
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analogReference(EXTERNAL); // 3.3v external, or 1.7v internal. We need 1.7 internal for the battery level, which means we're gonna have to do something about the paddles :/
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analogReadRes(8); // We only need 8 bits of resolution (0-255) for battery & paddles
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analogReadAveraging(4); // ?? dunno if we need this or not.
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analogWriteResolution(12);
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@ -263,7 +263,7 @@ void loop()
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// FIXME: what about rollover?
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nextBattCheck = millis() + 3 * 1000; // check every 30 seconds
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// This is a bit disruptive - but the external 3.3v will drop along with the battery level, so we should use the more stable (I hope) internal 1.2v.
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// This is a bit disruptive - but the external 3.3v will drop along with the battery level, so we should use the more stable (I hope) internal 1.7v.
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// The alternative is to build a more stable buck/boost regulator for reference...
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analogReference(INTERNAL);
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batteryLevel = analogRead(BATTERYPIN);
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@ -290,10 +290,10 @@ void loop()
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if (batteryLevel < 146)
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batteryLevel = 146;
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if (batteryLevel > 172)
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batteryLevel = 172;
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if (batteryLevel > 168)
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batteryLevel = 168;
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batteryLevel = map(batteryLevel, 146, 172, 0, 100);
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batteryLevel = map(batteryLevel, 146, 168, 0, 100);
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g_display->drawBatteryStatus(batteryLevel);
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}
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}
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