Programming thread. Made this recently: classical Runge-Kutta method applied to trajectory integration.

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File: ea8c68f09123af0⋯.png (9.48 KB, 928x758, 464:379, 9504DB0B_F283_430C_B0BA_AE….png)

Anonymous 11/20/20 (Fri) 02:49:20 No.21863

Programming thread. Made this recently: classical Runge-Kutta method applied to trajectory integration.

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Anonymous 11/20/20 (Fri) 03:08:10 No.21868

File: dc8f7735de989a5⋯.jpg (291.86 KB, 755x800, 151:160, 20201120_tx_timer.JPG)

Something I'm about to start doing... A Transmission timer.

It's an Amateur Radio thing. Most Ham Repeaters have session timeouts, my local one limits overs to 3 minutes (..which is a bit small compared to others), and this just counts up in seconds whenever that super-simple RF signal-level circuit outputs a voltage, which happens when there's a local non-microwave radio transmission, i.e: me on the FT-817.

Coding will be in MSP430 assembler.

The '430 is kewl-- it's a proper Von Neumann CPU, and the instruction set makes this old Commodore 64 coder quite erect.

Given how much power those fcukhueg 7-segs will use, I'm not even going to bother with low-power mode on the CPU.

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Anonymous 11/23/20 (Mon) 04:27:05 No.22491

File: 30aeb3d2b50daf1⋯.jpeg (568.7 KB, 1536x2056, 192:257, 80891BEA_5256_4125_903D_5….jpeg)

>>21863 (Me)

Update: Today, I devised a suitable RK4 integration method for calculating both angular velocity and position. Previously, my simulation code assumed that the forces on the projectile were invariant with respect to its orientation. I expect that this will facilitate lockstep integration of position, velocity, orientation, and angular velocity.

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Anonymous 11/23/20 (Mon) 07:29:19 No.22501

i can imagine this is the only profitable use for science nowadays, calculating projectile path, heat-seeking, aimbots...

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