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Photos from my rebuild of the Stealth USB Capslocker, using a laser resist etching process. Full writeup available here: macetech.com/blog/node/81
big change: switched to LP2951 power supplies for their shutdown pins.
small change: dropped unused 7805 regulator, added 1n4004 input diode, tightened everything up, dropped extra power supply enable circuity, switched to pin headers for power supply (2 for each voltage).
This rat's nest is the shutter electronics, on the blue board, and the photodiode amplifier on the white board. I'm using a Raspberry Pi Pico, which I can cope with more easily than the PIC 12F675 controller specified in Frans' design. Also, at £3.60 I couldn't resist getting this device to play with. Otherwise the shutter driver electronics are exactly as his version. At the moment there is no provision for the rangefinder or flash control, it's just the shutter driver.
The main circuit is built on a Raspberry Pi Pico breadboard, which is great for prototyping. The extra lights and switches were very convenient for debugging the circuit and software. Intention: ultimately a pcb with Fritzing.
I'm developing the software using the Thonny IDE with micropython. With this I can use assembler for the PIO state machines to get precise timing. The current code is not optimal in that respect but I can see that when I start working on the flash trigger, precise synchronisation with the shutter open time will be essential. I intend to make the code and other details of the project available on my GitHub account.
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This photo recorded March 10, 2020, after visiting Space Center Houston. We've driven past this Fry's Electronics half a dozen times in recent years and I kept promising we'd stop and get a photo, so I finally did.
Dirty Electronics Mute Synth custom modified by A.S.M.O. for Daniel Miller (The Normal / Mute Records).
Touch panels hardwired to pots and switches, 3 LFOs, one for each oscillator and feedback.
Low / band pass resonant filter with external voltage control input, self oscillates at full resonance.
Panel is covered in (warm) leatherette, nice!
Greenpeace activists protest outside Hewlett Packard headquarters in Palo Alto, Calif., July 28, 2009. Greenpeace today exposed electronics giant Hewlett Packard for backtracking on its public commitment to eliminate key toxic chemicals in its products by the end of this year. Some of the Greenpeace activists climbed to the top of Hewlett Packard global headquarters and painted the message “Hazardous Products” in big, bold letters on the roof. The message, applied using non toxic children’s finger-paint, covered over 11,500 square ft., or the size of two and half basketball courts.
Dirty Electronics Mute Synth custom modified by A.S.M.O. for Daniel Miller (The Normal / Mute Records).
Touch panels hardwired to pots and switches, 3 LFOs, one for each oscillator and feedback.
Low / band pass resonant filter with external voltage control input, self oscillates at full resonance.
Panel is covered in (warm) leatherette, nice!
A shot of the component side of my Octave Fuzz from BYOC.
I'm not getting any output, so I'm hoping some helpful members of the BYOC forum can help me troubleshoot.
From a 1331A XY monitor. Stock number 5083-2578.
More details on CRT manufacture in this Tektronix video (1955): www.youtube.com/watch?v=q5dhfhMItQc&feature=youtu.be
Velleman PMK 111 INTERVAL TIMER
IFA Berlin 2008, Opening Day, Consumer electronics show
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