The Curious Engineer

All blogs / Electronics

BOGIN, JR.

boginjr.com

ElectronicsRetro computingDOS / vintage PCAmigaHam radio / RF

’15’20’25
Posts
66 from 9 Mar 2012 to 17 Aug 2026
Posting
now and then (2 in the last year)
Kind
personal blog
Feed
https://boginjr.com/feed/

2026 2

  1. ‘Sentinel’ MFM/RLL hard disk controller
  2. Acoustic coupler

2025 4

  1. Winchesterduino, version 1.1 update
  2. Winchesterduino MFM/RLL disk interface
  3. PMD 32-SD pre lenivých
  4. Štítky panelu Tesla BM215A

2024 2

  1. ‘Cat printer’ stock ticker
  2. ImageDisk (IMD) support in MegaFDC

2023 7

  1. Amiga 500 shenanigans
  2. Yaesu FT-857 CAT/interface cable
  3. PCjr’s 40th birthday: tape booting revisited
  4. 2.88MB PS/2 diskettes thru USB with an Arduino
  5. Experiments with an Edison Phonograph
  6. MegaFDC – a Mega2560 floppy drive controller
  7. Arduino Mega2560 nixie clock

2022 2

  1. Keybjr
  2. IBM 4860 PCjr

2021 3

  1. 8FORMAT
  2. Using 8-inch diskette drives with a PC
  3. DKE “Deutscher Kleinempfänger”

2020 8

  1. Booting from a vinyl record
  2. Dealing with TTL/RGBI video
  3. IBM 5150
  4. ALLOY EarthStation-I
  5. Studer-Revox B77 MKII
  6. Kudelski-NAGRA III BH
  7. 5150CAXX
  8. BootLPT/86

2019 2

  1. TESLA PMD 85 8-bit computer
  2. TESLA PMD-60.1 monochrome monitor

2018 6

  1. CRT screen regenerator
  2. Nixie tube tester
  3. Magic eye tuning indicator as a VU meter
  4. TESLA B115 Hi-Fi reel-to-reel tape recorder
  5. TESLA B90 reel-to-reel tape recorder
  6. TESLA B101 reel-to-reel tape recorder

2014 1

  1. RBGT-62 Geiger counter (radiac)

2013 5

  1. Windows/Workstation Kill Switch
  2. CMOS De-Animator v3
  3. Siemens Nixdorf PCD-4ND
  4. 200 kV multiplier
  5. Semiconductor free Geiger Counter

2012 24

  1. EDOS high-range dosimeter
  2. Triple333 (333-333-333)
  3. 3D X-ray setup
  4. ST-WARE Softworks
  5. Two watt blue laser driver 445nm
  6. Fluoroscopy of a hand
  7. X-rays with a Beryllium-window tube
  8. Dual ignition coil driver
  9. X-rays with a dental Chirana
  10. Small Vacuum tube Tesla coil (VTTC)
  11. X-rays with a 6VS-1 (6ВС-1)
  12. X-rays with a DY86
  13. Flyback driver #3: ZVS
  14. IBG 58 T Radiation indicator
  15. DP-5B (ДП-5Б) Geiger counter (radiac)
  16. IT-65 Geiger counter (radiac meter)
  17. Fully Regulated ATX Power Supply
  18. Derrick Operating System
  19. Degen DE1103
  20. A Guide to Flyback Transformers
  21. Flyback driver #2: NE555 quasi-resonant
  22. Flyback driver #1: Single transistor driver
  23. TESLA Merkur 4160AB B&W TV
  24. TESLA Moderato 1037A radio record player