Raspberry PI GPIO interface board

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!!Assembly [https://remoteqth.com/img/wiki-rotator-server-01.jpg] [https://remoteqth.com/img/wiki-rotator-server-03.jpg] ✔ All components [https://remoteqth.com/img/wiki-rotator-server-04.jpg] ❏ Solder J2 GPIO connector on bottom of pcb - {.redka#id color: #f23f37;}'''with the exception of pin 17'''{/} [https://remoteqth.com/img/wiki-rotator-server-05.jpg] ❏ Next R1 R2, D2 D3 D4 D5 D6 D7 D8 D9 and C1 C3 C4 C5 C6 C11 C7 C8 C9 C10 [https://remoteqth.com/img/wiki-rotator-server-06.jpg] ❏ All pin strip and connector J16-19 [https://remoteqth.com/img/wiki-rotator-server-07.jpg] ❏ The remaining components - K1, U2 U3 U4 U5, CONN1 CONN2 CONN3 CONN4, F1, R3 R4 R5 R6 - '''before by soldering turn fully CCW, and put on control screw towards to diodes {.redka#id color: #f23f37;}= center of the potentiometer must be routed to ground,'''{/} J8 [https://remoteqth.com/img/wiki-rotator-server-08.jpg] ❏ Last IOs U1 ULN1 ULN2 and two mandatory DC/DC converters for Raspberry PI and rotator modules - {.redka#id color: #f23f37;}'''before mounting must both be set to the output voltage of 5V, otherwise you risk damaging RPI and arduino'''{/}
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