Making Electronics

So the final fix will be replacing Lidar turret. But as I said in the part 1 of Neato Botvac Lidar Repair I could not find Botvac Lidar turret to replace. But there are many XV Lidar turrets available on eBay and Amazon.
And they are different. XV series turret has mechanical data and power connection between spinning turret head and base using sliding contacts. This is major point of failure of XV series turrets. And Botvac turret has optical data connection to the...

Here goes a bit of story how I get there, for those who bored of text jump straight to the juicy pictures.
I acquired a broken Neato Botvac
robot vacuum on eBay recently. Seller has said that vacuum asks to turn power switch on, which is hidden in the dust bin compartment. But switching it on does not help and robot won't start cleaning. Otherwise it looks in good condition. Ok, easy fix...

Today I'm going to teardown a pair of Oaxis InkCase thingies. It is a protective case for your phone which has a second screen and the screen is eInk type screen, black and white. This type of screens used for eBook readers like Amazon Kindle. So in...

Here goes schematics and pcb for transmitter which will be is installed inside a controller shell.
Battery charging current set to ~200mA. There are 3 leds. Red(Orange) is for charging indication. One green for charging end indication and second green is for debug indications. There are 4 smd connections. +5v input for charging. Battery connection...