Steve Dunne Posted March 9, 2019 Share Posted March 9, 2019 Scope now fixed (bad probe connection). The Arduino signal output is fixed at 4.0 volts - a very clean square wave. All my other testers give a 5V square wave, or ~4.8V if powered by a 4-cell NiMH battery. These are High Voltage servos after all, and it appears that 4.0V signal is below the threshold even though the power pins are seeing 5V+. Problem solved and all happy! Now for the next... Steve. Quote Link to comment Share on other sites More sharing options...
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