I have a Trinket M0 attached to a 16 LED NeoPixel. GND, 3V, D0 (Trinket M0) are connected to Ground, Power, Data-In (NeoPixel).
I have a SPST that goes between the 3V output on Trinket and Power Input on NeoPixel. The circuit is fine when the switch is in the on position, but when I turn it off, I get an error message in serial console that "You are in safe mode: something unanticipated happened. The microcontroller's power dipped."
The Trinket is plugged in via Micro-USB to the wall so I don't mind if the switch just turns off the LEDs or the entire Trinket but what is the best way to wire the switch to this?
Installing a Switch
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The Propmaker Wing does something similar. https://cdn-learn.adafruit.com/assets/assets/000/069/243/original/adafruit_products_Prop_Maker_FeatherWing_Sch.png?1547249389. See the power/enable circuit in the top left.
The bounce in a mechanical switch may be causing the problem as the current demands from the strip will jitter. Using that circuit with a debounced switch should work.
Hmm... you might try adding a moderately sized capacitor (maybe 1 microFarad... you could start there and experiment) to the Trinket side of the switch.
Dave
The bounce in a mechanical switch may be causing the problem as the current demands from the strip will jitter. Using that circuit with a debounced switch should work.
Hmm... you might try adding a moderately sized capacitor (maybe 1 microFarad... you could start there and experiment) to the Trinket side of the switch.
Dave
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dastels - Posts: 4837
- Joined: Tue Oct 20, 2015 3:22 pm
2 posts
• Page 1 of 1
Please be positive and constructive with your questions and comments.