DMX 512 control board DMX 192 repair

DMX stands for Digital Multiplex DMX512 (Digital Multiplex) is a standard for digital communication networks that are commonly used to control stage lighting and effects. DMX can now be used to control almost anything, reflecting its popularity in theatres and venues. I have some DMX-512 controlled lights and also built some DMX-512 hardware myself. I

PIR sensor teardown

This is a tear-down of an interesting PIR (passive infra red) sensor found from some unknown light system believed to be powered from 230V AC. The chips used seem to be ST LM2904 low power opamp and TFK U2100 timer control chip. The sensors are PIR sensor and LDR. The most interesting part is that

Night light teardown

Here is a teardown of cheap mains powered LED night light from LIDL. After few years of use this light became very dim and so useless. I opened it to see what is in it and what was broken. Let’s open it. Circuit board details Here is the circuit diagram. This is quite typical transformerless

Electrical car charging cables

There is a growing interest and investment in electric vehicles infrastructure. To change those electric vehicles here are many different options how this can be done – with different benefits and disadvantages. The charging time depends on the battery capacity and the charging power. The charging power depends on the power available from the power

Sony PlayStation Teardown

Celebrating the console’s 25th birthday in style, iFixit makes PlayStation teardown,breaks out the DualShock controllers and the screwdrivers reports https://www.hackster.io/news/ifixit-tears-down-a-launch-model-sony-playstation-to-celebrate-the-console-s-25th-anniversary-38f7d4522bbd The detailed tear-down is available now on the iFixit website. For those interested in the inner workings of the original PlayStation the company also has a service guide.

LED DMX-512 lamp teardown

Here is a tear-down of 36W Par LED PAR CAN Stage Light with IR remote and DMX-512 control from wish.com sale. The light works well with DMX-512 control. Front and back On the back there are XLR3 DMX-512 connectors, address display and control buttons. Look inside On the left there is aluminum circuit board with

Omron blood pressure monitor teardown

This is a teardown of an Omron M6 Comfort blood pressure monitor. This was several years old model (newer looks different). This teardown was done because this was no longer reliable – the display was missing most of graphics. Let’s open it. Open two screws and use pry tool to open plastic case. Let’s go