A peak into the smd pick and place assembly line at the factory.
Finally I found a reliable manufacturer.
Can you spot the error?
Re: How it's made (inverter board)
Posted: Tue Sep 24, 2019 5:16 pm
by joromy
This is how I test the boards, before I ship out.
Re: How it's made (inverter board)
Posted: Tue Sep 24, 2019 8:46 pm
by johu
Finally got around to watching, so you found a supplier
Wouldn't it save time to use stencil & oven?
Re: How it's made (inverter board)
Posted: Thu Sep 26, 2019 8:06 am
by joromy
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
Re: How it's made (inverter board)
Posted: Thu Sep 26, 2019 8:48 pm
by doobedoobedo
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.
Re: How it's made (inverter board)
Posted: Wed Oct 09, 2019 1:13 am
by riii
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?
Re: How it's made (inverter board)
Posted: Wed Oct 09, 2019 1:26 am
by joromy
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!!!!
