Need advice on building the TMC22xx PCB + Nano board

[Samuel Tumlad]

Hi all, I just ordered the TMC22xx + Nano PCB from JLCPCB. I've gone through the parts list and bought some from Mouser. I don't need the full feature and just need the minimum of a focuser for my lens. I was wondering if I could omit a couple of stuff and what would I place (a jumper?)in the PCB in lieu of these parts if they are indeed important.

As an example, I omitted the switches and connectors. I plan to use a JST connector to connect the NEMA17 and 3D print a case that would enclose the board and NEMA 17 motor together. For the on/off switch I would simply use a JST 2-pin and a jumper cap.

Here are the things I omitted:
* 12mm Mini Round Waterproof Lockless Momentary Push Button Switch (for PB switches)
* Mini toggle ON OFF switch (power on reset circuit)
* LED Bezel Holder 3mm
* LCD 1602 I2C Module or OLED 0.9" I2C Module
* GX12-3P Aviation connector male
* GX12-3P Aviation connector female
* Toggle switch mini ON-OFF SPST 2pin
* RS232 DB9 female panel mount connector
* Home Position Switch, On/Off momentary

Also, for the LM7808 Voltage Regulator TO-220 package I got a L7805CV which I reckon should do the same work but am unsure if what I did was right.

I would like to get your inputs on this.

Clear skies!
Sam

[brownrb]

this help?

it is a LM7808. You will have issues with LM7805. We need to have a higher voltage on VIN so that it overrides USB 5V power.

[Samuel Tumlad]

Mouser does not carry an LM7808. My local shop sells an L7808CV would that work?

Yes the PDF did, help about omissions. Thanks!

[brownrb]

yes, in the TO-220 package