How it's made (inverter board)

joromy · Post by **joromy** » Sun Sep 22, 2019 6:36 pm

A peak into the smd pick and place assembly line at the factory.
Finally I found a reliable manufacturer.

Can you spot the error?

joromy · Post by **joromy** » Tue Sep 24, 2019 5:16 pm

This is how I test the boards, before I ship out.

YouTube · Post by **johu** » Tue Sep 24, 2019 8:46 pm

Finally got around to watching, so you found a supplier

Wouldn't it save time to use stencil & oven?

joromy · Post by **joromy** » Thu Sep 26, 2019 8:06 am

The pick and place is most time consuming.
Just ordered some manual trays, only EUR 11 from aliexpress.

Paste one board only take 20 min.
Heating the board on hotplate and using gun, works great. It's very therapeutic to see solder melt around the components.

I will consider other methods/equipment if the sale take off

doobedoobedo · Post by **doobedoobedo** » Thu Sep 26, 2019 8:48 pm

I'm with Johannes on the stencil and oven. Stencils are cheap, quick to setup, and even quicker to use once setup and give nice consistent results.

I use a cheap toaster oven with my own controller (code now on github) which will cook as many boards as you can fit in a couple of minutes. Placing components is the biggest pain especially with my eyesight.

riii · Post by **riii** » Wed Oct 09, 2019 1:13 am

Hi Joromy,

Sorry if this should be obvious but is there a browser interface or downloadable software (like IAR embedded ide) you use to access the board via the ST-link V2 STM32? Should I use PC or Linux? On a PC I have downloaded and installed IAR (I think I) have the USB driver for the ST link installed, ST-link connected to inverted board, board powers on, I have the right pins connected but I'm having no success talking to the ST-link let or the board... I'm mostly confused about what software to use and how it should interface with the board. Board is fully populated. Thanks!

Looks like you're using the wifi interface on the browser. I bought an Olimex MOD-wifi-ESP8266, and that might be easier to use. Which pins on the board should that pug into? Does the wifi interface need tot be configured before hand?

joromy · Post by **joromy** » Wed Oct 09, 2019 1:26 am

If this is the board that I made, the bootloader and firmware is already u/l.
If status led is blinking, then it is programmed.

For parameter setup, you use the serial pin 4 and 14 on C4998, and a terminal program.
But will recommend the wifi interface!!!!

https://openinverter.org/shop/index.php ... duct_id=56

Updating firmware is done, with the wifi interface.

riii · Post by **riii** » Wed Oct 09, 2019 1:36 am

You beat me to the punch! Sorry, what pins should the wifi interface plug into?

joromy · Post by **joromy** » Wed Oct 09, 2019 1:46 am

riii wrote: ↑Wed Oct 09, 2019 1:36 am You beat me to the punch! Sorry, what pins should the wifi interface plug into?

Let's move to here:
viewtopic.php?f=16&t=186&start=10#p3374

How it's made (inverter board)

How it's made (inverter board)

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