ESP32-C3 brushed ESC + RX - Design Overview (it's tiny!)

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In this video, I’ll be showing you how I made a tiny ESP32 robot controller called the AntC3, which can drive motors, control servos, and receive wireless signals from other ESP32s to act as a fully customizable RC system.
00:00 Intro
00:33 Schematic
13:25 PCB Design
GitHub:
github.com/hxelec/antc3
Hopefully the algorithm will pick this up lol:
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[@MistahHeffo]

Also a hint for the Power LED... Get a Two-Pin bidirectional Red/Green LED (or put two LEDs in parallel bidirectionally) where the GREEN led lights when power is applied correctly, and the RED led lights when the power is applied backwards.

[@hxtec32]

Smart! Yes, I might try that sometime, thanks!

[@Seventhsu]

Great video, big fan. Some tips on passive components: you can and should use 1% resistors for everything, as they are often the same price as 5% and give an assurance of accuracy like you said. You also correctly noted that ceramic caps are terrible for bulk storage for many reasons, so you can think off-board for a solution that costs zero PCB space: many drone ESCs (which also suffer from battery voltage sag under heavy load) solder a giant through-hole electrolytic cap directly to the battery wires/input pads and bend it somewhere that it fits. Happy making :)

[@tomaszkarwik6357]

Man the quality of the videos has increased a ton.
Good job

[@MistahHeffo]

The resistor arrangement for the RX/TX lines is an awesome hack!

[@user-ko7kj4kb7s]

The quality of the vids are crazzy goood

[@hxtec32]

Thank you bro 😘🫢

[@BamTehBrent]

Yes! I've been waiting for this

[@AimingIsOverrated]

this is very informative and very groovy baby!

[@hxtec32]

Thanks so much. More coming. My next one will be either the programmer or the controller/remote.

[@pterribilis]

🎉 can’t wait to see more videos😅

[@Positive_Altitude]

I recommend against low-temperature solder, especially in power applications. Many components have overtemperature protection at ~150C, so in some conditions, they could melt the solder. Anyway, great video.

[@hxtec32]

True true actually. Next version will be assembled by PCBWay though, and they will probably use 250 C solder paste

[@Positive_Altitude]

Also, voltage dividers and ADC are a little bit tricky. If you have very high value resistors, the readings will be not precise, as there is an internal "sampling" capacitor in ADC and with high input impedance it takes a lot of time to charge, probably more than your sampling time. Just sharing the information, I think your design is fine here. Check out AN2834 application note if you need a good bedtime reading about ADCs :D

[@Positive_Altitude]

@@hxtec32 Cool! I would love to hear about it.

[@thatradioguy6839]

hahaha nice great scott reference

[@hxtec32]

lol thanks bro

[@shanemshort]

is that a slight dig at great scott? :D

[@alanhaase7165]

Haha😂 both great youtubers

[@hxtec32]

a little lol

[@jvp5000]

Cool!

[@stefankachaunov396]

Hahaha, so I'm not the only one who cringes when GreatScott uses up half a highlighter in every video 🤣
You forgot to print the datasheet on an inkjet for maximum smear though 📃

[@hxtec32]

true lol. glad you noticed 😂😂

[@AJB2K3]

ROFL Free Fog machine with induction heater.

[@daijoubu4529]

Have you stumbled upon the TA6586 motor IC? It's DIP8 but can do 5A continuous, there's also the SA8336 7A continuous in DIP8 and SOP8, the latter is not available on LCSC however, used in MN/WPL RC cars

[@hxtec32]

Yeah, I’ve only seen the TA6586 I think, but I didn’t want to use a DIP8 since it would be very space consuming (bc it’s through hole). I’ll take a look at the SA8336 though. Thanks bro