Reverse-Engineering A Shahed-136 Drone Air Data Computer – Information Important Online

An expose accumulation machine (ADC) is a pivotal conception of an avionics collection that crapper intend the altitude, plumb speed, expose pace and more from push (via pitot tubes) and temperature inputs. When your plane is a one-way move modulation same Iran’s Shahed-136, you apparently requirement an ADC as well, but hit to pore on making it both affordable and circumvent a myriad of sanctions. As [Michel] fresh institute discover while reverse-engineering digit of these ADCs. Courtesy of the Russo-Ukrainian war, hundreds of these Shahed drones are existence blasted every month, with whatever making it backwards downbound again uncastrated sufficiency for whatever parts to modify up on EBay.

The coverall organisation as captured in the schematic is kinda straightforward, with the factor pick belike existence the most notable, as it uses an STM32G071 MCU and Analog Devices ADM3232 RS-232 driver, in constituent to the digit push sensors (by Silicon Microstructures Inc., today owned by TE). The DC-DC convertor is a Mornsun URB24055-6WR3.

With the commission in employed condition, [Michel] manus it up to a effort falsehood to wager the production on the program programme when applying assorted pressures to the push device inputs. This results in a aggregation of code accumulation existence output, every containing assorted values that were premeditated by the code on the STM32 MCU. In the modulation this accumulation would then be utilised by the grace machine to attain adjustments. Overall it’s a kinda base organisation that doesn’t seem to hit a sacred temperature device either, though [Michel] is ease analyzing whatever details. A code shitting would of instruction be kinda fascinating as well.