Archive for the ‘T&T’ Category.

Simple 5 minutes housing for Raspberry Pi with Camera

I took old cover from plastic sewer pipe (it was never used ha ha). Then I drilled four holes for M3 screws and one bigger hole for camera module lens. The housing was prepared from one litre PET bottle. I cut the bottle to proper size and inserted raspberry Pi with the camera inside the bottle. Next the LAN cable with passive 5V “PoE” was inserted.

Finally, I heated the bottle with hot air gun at the camera side to shrink a little bit and tightly close the gap between the plastic camera “holder” and the bottle .

Photos below will tell more than thousand words:

Continue reading ‘Simple 5 minutes housing for Raspberry Pi with Camera’ »

How to program blank STM32F1 with STLINK V2 firmware

Today I found out how to “flash” blank STM32F103xC to make STLINK V2 debugger interface.

So, instead of desoldering from Discovery board to make miniture STLINK debug interface:

a09 - stlink v2 brain desoldered                  a0a - stlink v2 finally assembled usb mini dongle

it’s possible to solder blank (or any) STM32F10x with USB and at least 64k flash + 20k RAM, program it with STLINK V2 Firmware and use your new USB dongle for debugging STM32 or STM8 devices.

Continue reading ‘How to program blank STM32F1 with STLINK V2 firmware’ »

Comparing two DIY PCB prototyping processes

Following this interesting heat-less, laminator-free process I decided to test it myself:

Continue reading ‘Comparing two DIY PCB prototyping processes’ »

Garmin VIRB video cable teardown

Here’s teardown of a Garmin Virb camera AV cable. You can find pinout and “ID” resistor at the end of the post:

http://gal.pavlin.si/galwii/?page_id=196

 

virb usb

How to weld a thermocouple using two pencils

Power supply: 30V, 10A

How to make logo from DXF in Altium

This is simple tutorial, hot to prepare your favorite logotype in altium designer, either as overlay mask or in copper.

Step 1 – Draw your logotype. Prepare it as outline and save it in DXF or DWG version 11 or 12. Altium designer is very picky about that.

logo01

Continue reading ‘How to make logo from DXF in Altium’ »

QR Code in solidworks

I was looking for easy way to get QR code in 3D model within solidworks. Here’s one recipe hot to do it.

test  qr3dqrfinal

Continue reading ‘QR Code in solidworks’ »