Circuitry Gallery A view of the interior of the handwired dew heater controller A Raspberry Pi computer set up with an A/D daughterboard The five LM3405 based LED current regulator modules completed and awaiting testing Handwired perfboard and standard 74xx digital logic make up an event counter. Part of the Keck 2 logic board, this PCB assembly controls the various control and safety logic for the Keck 2 telescope. A sample of the control wiring and circuitry in the Servo Amplifier Assembly A distribution video amplifier built around a THS7324 I/O cards and field wiring in the Keck 2 local controls PLC A microcontroller utility PCB layout ready for manufacture Switches and indicators for the dome simulator awaiting wiring The remote current controller PCB and case prior to final assembly The transformers for the Keck 2 telescope servo drives A hand wired microcontroller circuit intended to be used to control a pair of inclinometers in the Keck 2 dome. The new wiring for the motor and encoder including the new terminal strip A digital event counter built when I was fifteen years old. A bank of relays form the safety interlock system for the telescope. A small linear regulator built on perfboard for use in the dummy battery A makeshift breakout board for a THS7374 video amplifier A GPS clock constructed with point-to-point wiring Testing a macro setup that uses a Canon 50mm f/1.4 lens, and a 50mm extension tube mounted to the EOS-M. Patching in an experimental control system to move the Keck 1 telescope, one step closer to a major upgrade. Share this:WhatsAppRedditEmail Author: Andrew An electrical engineer, amateur astronomer, and diver, living and working on the island of Hawaiʻi. View all posts by Andrew