LDM #369: Shahed-136 drone Air Data Computer

Complete schematic diagram

LDM369-Shahed-136-ADC-Sch_A

LDM #375: Boeing 727 EPR Indicator – Part 1: Teardown and Reverse engineering

Posted by on Août 28, 2024 in Blog | 0 comments

Boeing 727 EPR indicator

Boeing 727 EPR indicator

Click below to download the full schematic diagram:

B727-EPR-A

LDM #374: Humphrey directional gyro – teardown, test and reverse engineering

Posted by on Août 22, 2024 in Blog | 0 comments

vlcsnap-2024-08-22-16h10m51s646

Video on Youtube:

https://youtu.be/xzcyMOsk-X4

Schematic diagram:

DG11-0105-1

LDM #367: Shahed-136 kamikaze drone servomotor

Posted by on Juin 22, 2024 in Blog | 0 comments

Schematic diagram of the servo motor of Shahed-136 kamikaze drone

LDM367-Shahed-136-servomotor_B

LDM #364: Aircraft Coffee Maker

Posted by on Juin 3, 2024 in Blog | 0 comments

LDM #364: Aircraft Coffee Maker

Part 1: overview

https://youtu.be/GiQL9kHKi9I

Part 2: reverse engineering

https://youtu.be/SyVm-urduX4

Schematic diagram of the coffee maker:

Coffee_maker_Rev_A_030624

Modification for 115Vac 50/60Hz:

The modification consists to replace the 115Vac/20Vac 400Hz transformer by a 30W AC to DC converter (ECL30UD02-T) which delivers a voltage of 30Vdc.

  • Unscrew the right cover which gives access to the electronic board
  • Remove the logic board
  • Disconnect the 16-pins connectors
  • Remove the power supply board
  • Desolder the transformer
  • Solder four lugs (pins

pcb_transfor_modif_top.jpg

  • On the bottom side of the coffee maker drill the holes according to the image below:

IMG_3183.jpg

  • Place 4 spacers M/F M2.5
  • Place an insulator between the power supply and the square bar
  • Mount the power supply on the spacers
  • Connect the AC-DC converter to the power supply board

IMG_3232