Hello Everyone. I am just getting back to re learning Arduino IDE after several years of refraining from my electronics hobby. Once returning to learning i purchased a uno R4 wifi and an Adafruit TFT shield, then discovered the ESP 32 S3 dev boards. ( i buy the ones from Digikey or Freenove because…

[image] r_hatton: Again these are just ideas, the worst are probably first :upside_down_face: [IMG_4179] Hint 2, when there is no redLED/servo activity, can you see we are just looping through the WAITING State every 1ms ? How about preventing the redSwitch from disrupting things while …

[17583231179886550892879377749786] It works just as you say, except i cant get my red relay LED to light from the transistor. Im going to troubleshoot and find out why. Ive gotta tidy up these bird nest of wires, and i was phoning my Dad while i was building :joy:

Problem solved. I only had grounds on the breadboard and no positive power from the R4. Everything works great, as per your schematic. Im starting to really like this Renesas chip. I dont know why people hate on it. Guess cause the boards comes shipped with heart graphics on the LED matrix …

[image] r_hatton: cant get my red relay LED to light Make sure the LED is not reversed. Make sure you are using the correct pinout connections. [IMG_4180]

All good. I subbed in the old 2N3904 bc i didnt have any 2n2222s and otherwise built your circuit to the letter. I did carefuly look up the datasheet to the transistor. It now works 100%. I did make a small irlz44n Mosfet board for future use here. only thing i didnt build in was the gate charge re…

I am not a fan of those interconnecting wires. One more thing for you to master: [image] FYI Making DuPont jumper wires. General Electronics I thought others might be interested in this discussion making DuPont jumper wiring. Attached is a PDF file for the d…

[image] LarryD: I am not a fan of those interconnecting wires. Agreed they suck One more thing for you to master: Already mastered most types of 'open barrel' connections including metri-pack weather-pack, the old Packard terminals, and my least favorite Deutsch connectors. I already have (m…

You can use a female Dupont connector as a male by inserting a short (2 cm?) bit of solid wire into it.

[image] r_hatton: (ive repaired a lot of automotive wiring harnesses) Look for wire splices like 3M makes. You finish up with solid waterproof sealed joins. Telecom crews use crates of the things making fast hairthin-wire splices in seconds w/o solder.

You can use male header pins as gender changers. [image]

Getting back to Arduino

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LarryD September 19, 2025, 11:34pm 144

I am not a fan of those interconnecting wires.
One more thing for you to master:

Share tips you have come across - #1120 by LarryD Share tips you have come across - #1120 by LarryD

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