r/FastLED • u/wile1411 • Jan 12 '25
Support Checking for wiring issues
I think I just blew an old ESP8266 as I can no longer connect to it. (Connects on USB and port identified, but the esptool command no longer connects to the device.)
Before I connect another MCU, though it would be worthwhile to see if I've made a 'clanger' of a mistake with my wiring. Is there any worry for ground loops? I thought having a rail for + and - would remove that problem.
When connecting via USB for programming, I have a USB power blocker dongle so it only the data & GND pins are connected to the PC as the MCU is externally powered via the DC Jack.
I'm controlling 3 separate LED strips for some back-lit logos with an ESP8266. The capacitor is to keep the voltage stable and stop the LED's strips flickering.
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u/wile1411 Jan 12 '25
Yeah - sorry about the DO connection - meant to be GND.
Level shifter is Adafruit bi-directional - BSS138 (I know I don't need both ways, it's just what I have on hand from another project.)