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It is designed to measure sound level
The TIP120 Darlington transistor is actually a dual-transistor configuration made by two bipolar transistors connected in such a way that the current amplified by the first transistor is amplified further by the second one
you can even use it to program AVRs (its a bit slow but works
your sensor readings will drift and become untrustworthy over time
Relay Large-Current 30A 4-Channel Module pro trinket It is designed to measureFour Heavy Duty Relay Outputs for Multi Load Control The Relay Large Current 30A 4 Channel Module gives you four larger relay outputs on one board for power heavy projects. It is aimed at builders who need several high current channels in a single control panel or automation box. This is a practical choice for machine control, grouped load switching, custom power distribution, and bench systems that need more than standard 10A relay boards. Important:
