the regulator didn't need a 22uf capacitor, datasheet for vreg on lcsc said 10uf.
Switch w 100 nano (.1 micro) farad capacitor (samsnung electro-mechanics package: 0402. )
Be mindful that the same component may be shown in multiple places on the given schematic. like the resistor/capacitor/ground/vcc here on the RC Delay Circuit -> (used to ensure stable power on startup)
Between the switch and ESP our Docs recommend using 1uF capacitor and we are using 100nF for our the Delay Circuit at EN Pin. can increase if needed
The switch doesn't look much like it's original schematic. That's because the wires going to ground don't touch in our drawing (no difference in outcome).
Here's our finished result when we put the two componetnts together. Pay attention to how the original schematics have the componets separate and the capacitor going to ground is shown twice. The docs/datasheet has a template schematic where it depicts this a lil different too. It looks identical to the switch above but adds the resistor right before EN.
As it's shown vs as it is
uniroyal keyboard manufacturer, 0402 0 ohm +-1% resistence
similarly, searching the library for 0402wgf2212tce will return a 22.1kohm resistor wheras 0402wgf4752ce yields 47.52kohms
The USB to UART datasheet recommends you use a 1Kohm resistor, not 2kohm like the schematics use.
NC == NF = Not Fitted = not connected (by default)
Be careful with the direction of arrows on the transistors
For the power supply, He made the RED led Green and in the schematic mapped it to 3.3v instead of how it's shown in schematic
for pin headers: 1 row 3 pins 1.27mm a pin.
We did not connect a diode but instead use a 3 pin header. The s2 reference schematic has a difference (maybe check it out) The 3 pins will connect esp to vbus or usb. The middle pin is the +5V which goes to our ESP32. Put a jumper shint between this pin and VBus and it will power from usb. Put a jumper shint between this pin and +5V and it will pull from the ESP32 +5V Input Pin (external power supply).
He then improves the IO0 by adding forked 22 ohm resistors that help w signal. (it is split within 3 different circuits so this helps) but you can get rid of em if needed.
The Docs mention Capacitor C15 Can cause issues and should be NF (not fitted) if it caused problems. We left a note.
He uses a 17 pin header not 19. 2.54mm 1 row. the original model doesn't use all the pins.
LED red 0805. Since it's connected to the output pin we use a 560 ohm resistor. and connects to IO18 to match with the s2 schematic
For the CP2102N USB to UART bridge controller there is no need to put in a capacitor at the vbus like the s2 schematic does. and the CP2102 has 'errata' which means softwear issue. They have special docs of to list em.. th cp2102 sometimes wont work as a usb device unless we solve add aditional circuit w/ a transistor and the use of gpio23. we did.
"Super standard Transistor": 2N7002T-7-F
Capitalization matters ^
And then he adds a way to mannually use gpio23. Gets a pin header which is used to cause a shortcircuit that activates the special circuit, manually, before actually programming w gpio pin 23. 'You can use tweezers or something, to connect the pins, 1 & 2 together to activate the circuit. Most people should have this in their schematic just in case but have it NF
tools > crossprobe and place
c1 as close to +5v input of regulator. c2 as close to output