Robotics hand and arm

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My robotic/pneumatic hand & arm
This is a long-running series of videos, started in 2015, because I come up with (and get suggestions for) new ideas for software and hardware, have to fix things, etc. With currently 7 powermotors (1x 50:1, 6x 125:1) and 2 small motors for the lower pitch-gears and a heavy arm it's my top-model at conventions.

25 October 2024: After the convention in Sinsheim, the base of the arm has to be reconstructed / replaced by L-elements. Free version has 8:08 minutes, the full-length video of 54:37 minutes is for paying patrons or buyers only. Click the image to watch the video. See also the blog.

7 June 2024: After the convention in Eindhoven, motors have to be checked and LED wiring for the valves and finger sensors fixed checked. Free version has 4:49 minutes, the full-length video of 20 minutes is for paying patrons only. Click the image to watch the video. See also the blog.

3 May 2024: After the convention in Wedemark - Mellendorf, an LED has to be fixed and pneumatics checked. And again, things don't always go the way you intend. Free version has 3:40 minutes, the full-length video of 20 minutes is for paying patrons only. Click the image to watch the video. See also the blog.

29 March 2024: Since there have been several problems, I need to do extensive checks on LEDs, the gearbox of the arm-pitch and the electrics and pneumatics of the fingers. Free version has 4:20 minutes, the full-length video of 20 minutes is for paying patrons only. Click the image to watch the video. See also the blog.

12 January 2024: Relocation of the fingers sensors should give a much better operational feeling. But will it work out? A failure is found but can it be solved? Click the image to watch the video. See also the blog.

17 November 2023: After-convention (Sinsheim & Schoonhoven) checkup and fixes. Click the image to watch the video. See also the blog.

15 September 2023: another LED replacement, fixes and test. Click the image to watch the video. See also the blog.

21 July 2023: LED replacement and full test. Click the image to watch the video. See also the blog.

19 May 2023: After-convention (Veghel) checkup with finger wires and LEDs. Click the image to watch the video. See also the blog.

17 March 2023: Adding a finger LED. Click the image to watch the video. See also the blog.

20 January 2023: Rewiring ground and adding a valve LED. Click the image to watch the video. See also the blog.

2 December 2022: Checking the pneumatic system and its electrical wiring. Click the image to watch the video. See also the blog.

14 October 2022: After convention (Sinsheim) fixing and testing. Click the image to watch the video. See also the blog.

23 September 2022: Sensor mount reconstruction for hand pitch and test. Click the image to watch the video. See also the blog.

26 August 2022: Sensor mount reconstruction for hand pitch and test. Click the image to watch the video. See also the blog.

5 August 2022: Hand pitch details, tests via Python & ftdiagnose via Linux. Click the image to watch the video. See also the blog.

15 July 2022: After-convention fixing and testing. Click the image to watch the video. See also the blog.

24 June 2022: More rewiring & testing. Click the image to watch the video. See also the blog.

10 June 2022: Challenging rewiring after the latest LED addition. Click the image to watch the video. See also the blog.

27 May 2022: Reconstruction ideas & testing 1, adding an LED, more. Click the image to watch the video. See also the blog.

13 May 2022: Testing after reconstruction & fixing some (not all) issues. Click the image to watch the video. See also the blog.

29 April 2022: More reconstruction of wrist gear with chain, some speed up. Click the image to watch the video. See also the blog.

15 April 2022: Reconstruction attempt of wrist gear w/ chain, some speed up. Click the image to watch the video. See also the blog.

1 April 2022: Wrist pivot switch & gear, ftdiagnose, Python, some speed up. Click the image to watch the video. See also the blog.

18 March 2022: Fix wiring, switch & gear with ftdiagnose & Python, some speed up. Click the image to watch the video. See also the blog.

25 February 2022: Arm pitch, LEDs, rewiring, ftdiagnose, Python, some speed up. Click the image to watch the video. See also the blog.

11 February 2022: More LEDs, resistors & wiring, ftdiagnose, Python, some speed-up. Click the image to watch the video. See also the blog.

28 January 2022: LED, resistor & wiring, ftdiagnose, Python, some speed-up. Click the image to watch the video. See also the blog.

7 January 2022: Rerouting & gEDA, reconstruction camera hold, LED & speed up. Click the image to watch the video. See also the blog.

17 December 2021: Testing & fixing fingers, reconstruction of hand pitch. Click the image to watch the video. See also the blog.

26 November 2021: Reconstruction of pneumatic engine & finger test. Click the image to watch the video. See also the blog.

5 November 2021: Yaw check, pitch reconstruction, motor diagnose. Click the image to watch the video. See also the blog.

8 October 2021: Yaw detection & operation diagnosis, Python analysis, test. Click the image to watch the video. See also the blog.

17 September 2021: Yaw detection & operation diagnosis, Python analysis, test. Click the image to watch the video. See also the blog.

27 August 2021: Yaw switch detection, Python, algorithm, time, test. Click the image to watch the video. See also the blog.

6 August 2021: Yaw switch detection, Python, algorithm, time, test. Click the image to watch the video. See also the blog.

16 July 2021: Camera, wrist, modification, yaw detection, Python, test. Click the image to watch the video. See also the blog.

25 June 2021: Wrist, camera position, modification, time, Python, test. Click the image to watch the video. See also the blog.

4 June 2021: Intro, wrist, switch, chain, modification, ftdiagnose. Click the image to watch the video. See also the blog.

14 May 2021: Intro, wrist, modification, ftdiagnose, Python, logfile, more. Click the image to watch the video. See also the blog.

23 April 2021: Intro, logfile, sensors, Python, wrist, testing, analysis. Click the image to watch the video. See also the blog.

2 April 2021: Intro, logfile, sensors, Python, time, calculation, more. Click the image to watch the video. See also the blog.

12 March 2021: Intro, logfile, sensors, Python, ftdiagnose, power, time, info. Click the image to watch the video. See also the blog.

19 February 2021: Intro, logfile, analysis, sensors, Python, time, gears. Click the image to watch the video. See also the blog.

29 January 2021: Intro, hand, pitch, sensor, wiring, ftdiagnose, Python, test. Click the image to watch the video. See also the blog.

8 January 2021: Intro, hand, pitch, sensor, wiring, ftdiagnose, Python, test. Click the image to watch the video. See also the blog.

18 December 2020: Intro, hand, pitch, sensor, wiring, ftdiagnose, Python, test. Click the image to watch the video. See also the blog.

29 November: Intro, hand, pitch, sensor, wiring, ftdiagnose, Python, test. Click the image to watch the video. See also the blog.

6 November: Intro, hand,, sensor, air, wiring, ftdiagnose, Python. Click the image to watch the video. See also the blog.

16 October: Intro, wrist, sensor, ftdiagnose, Python, reconstruction. Click the image to watch the video. See also the blog.

25 September: Intro, wrist, sensor, analysis, ftdiagnose, Python, test. Click the image to watch the video. See also the blog.

4 September: Intro, wrist, sensors, reconstruction, signal, wiring. Click the image to watch the video. See also the blog.

14 August: Intro, wrist, chain, sensor, signal, ftdiagnose, Python, more. Click the image to watch the video. See also the blog.

24 July: Intro, wrist, motor, chain, reconstruction, diagnose, Python. Click the image to watch the video. See also the blog.

3 July: Intro, wrist, modification, robustness, diagnose, Python. Click the image to watch the video. See also the blog.

12 June: Intro, wrist, modification, robustness, diagnose, Python. Click the image to watch the video. See also the blog.

22 May: Intro, wrist, observation, chain, diagnose, Python, test. Click the image to watch the video. See also the blog.

1 May: Intro, wrist, observation, test, Python, diagnose, oops. Click the image to watch the video. See also the blog.

10 April: Intro, stability, robustness, reconstruction, Python, diagnose. Click the image to watch the video. See also the blog.

20 March: Intro, wrist, diagnose, Python, stability, robustness, idea. Click the image to watch the video. See also the blog.

28 February: Intro, Python, fingers, wiring, diagnose, wrist, oops. Click the image to watch the video. See also the blog.

31 January: Intro, stability, diagnose, wiring, testing, Python. Click the image to watch the video. See also the blog.

8 January 2020: Intro, winch modification, counterweight, stability. Click the image to watch the video. See also the blog.

20 December 2019: Intro, wiring, hand, pitch, motor, Python, direction, more. Click the image to watch the video. See also the blog.

29 November: Intro, wiring, power, counterweight, reconstruction, location. Click the image to watch the video. See also the blog.

8 October: Intro, counterweight, reconstruction, location, balance. Click the image to watch the video. See also the blog.

21 June: Intro, counterweight, roll, sensor, reconstruction, test, oops. Click the image to watch the video. See also the blog.

7 June: Intro, roll, pitch, yaw, sensor, reconstruction, diagnose,oops. Click the image to watch the video. See also the blog.

31 May: Intro, roll, pitch, yaw, motor, reconstruction, diagnose, more. Click the image to watch the video. See also the blog.

24 May: Intro, roll, pitch, yaw, sensor, modification, actuation, oops. Click the image to watch the video. See also the blog.

17 May: Intro, roll, pitch, yaw, sensor, modification, gears, more. Click the image to watch the video. See also the blog.

10 May: Intro, roll, pitch, yaw, sensor, modification, direction. Click the image to watch the video. See also the blog.

26 April: Intro, roll, pitch, yaw, cord, motor, replacement, gears, more. Click the image to watch the video. See also the blog.

12 April: Intro, roll, pitch, yaw, cord, motor, gears, reconstruction. Click the image to watch the video. See also the blog.

5 April: Intro, roll, pitch, yaw, motor, reconstruction, gears, winch. Click the image to watch the video. See also the blog.

29 March: Intro, yaw, roll, pitch, motor, cord, fingers, diagnose, more. Click the image to watch the video. See also the blog.

22 March: Intro, yaw, pitch, modification, diagnose, Python, algorithm. Click the image to watch the video. See also the blog.

15 March: Yaw, roll, pitch, reconstruction, diagnose, Python, more. Click the image to watch the video. See also the blog.

8 March: Yaw, roll, pitch, diagnose, Python, algorithm, confusion, more. Click the image to watch the video. See also the blog.

1 Match: Hand, yaw, roll, pitch, diagnose, rewiring, Python, algorithm. Click the image to watch the video. See also the blog.

22 February: Hand, yaw, roll, pitch, fixes, diagnose, rewiring, Python. Click the image to watch the video. See also the blog.

15 February: Hand, yaw, pitch, reconstructtion, gears, wiring, diagnose. Click the image to watch the video. See also the blog.

8 February: Hand, yaw, roll, pitch, modification, reconstruction, more. Click the image to watch the video. See also the blog.

1 February: Hand, yaw, roll, pitch, pivot, reconstruction, wiring, Python. Click the image to watch the video. See also the blog.

25 January: Hand, yaw, roll, lift, reinforcement, reconstruction, analysis. Click the image to watch the video. See also the blog.

18 January: Hand, yaw, roll, pitch, modification, analysis, wiring, oops. Click the image to watch the video. See also the blog.

11 January: Hand, yaw, roll, lift, modification, analysis, wiring, oops. Click the image to watch the video. See also the blog.

4 January 2019: Overview, hand, yaw, roll, lift, analysis, modification, plan. Click the image to watch the video. See also the blog.

28 December 2018: Yaw, roll, reconstruction, winch, oops, analysis, plan. Click the image to watch the video. See also the blog.

14 December: Overall test, pivot, yaw, modification, wiring, analysis. Click the image to watch the video. See also the blog.

7 December: Overall test, pivot, elbow, modification, fingers, analysis. Click the image to watch the video. See also the blog.

30 November: Pivot & pitch test, diagnose, elbow, oops, robustness, more. Click the image to watch the video. See also the blog.

23 November: Test, pitch, diagnose, yaw, python, chain, switch, more. Click the image to watch the video. See also the blog.

9 November: Overall test, fingers, wiring, replacement, python, diagnose. Click the image to watch the video. See also the blog.

2 November: Overall test, pitch, fingers, electrics, pneumatics, more. Click the image to watch the video. Click the image to watch the video. See also the blog.

26 October: Roll, pitch, yaw, connection, hand, oops, analysis, more. Click the image to watch the video. See also the blog.

19 October: Roll, yaw, motor, chain, modification, speed, time, more. Click the image to watch the video. See also the blog.

12 October: Yaw, Python, algorithm, function, time, sleep, seconds, more. Click the image to watch the video. See also the blog.

5 October: Yaw, algorithm, function, sequence, milliseconds, more. Click the image to watch the video. See also the blog.

28 September: Timer, Python, algorithm, function, sequence, milliseconds. Click the image to watch the video. See also the blog.

21 September: Yaw, Timer, Python, algorithm, oops, milliseconds, variable . Click the image to watch the video. See also the blog.

14 September: Motor, switch, yaw, Python, algorithm, millisecond, more. Click the image to watch the video. See also the blog.

7 September: Timer, Python, algorithm, yaw, switch, analysis, more. Click the image to watch the video.. See also the blog.

31 August: Timer, Python, algorithm, argument, yaw, direction, more. Click the image to watch the video. See also the blog.

24 August: Timer, Python, algorithm, timing, yaw, direction, switch, more. Click the image to watch the video. See also the blog.

17 August: Sleep, timer, timing, demo, yaw, switch, Python, analysis. Click the image to watch the video. See also the blog.

10 August: Roll, pitch, yaw, sleep, timer, demo, motors, switch, more. Click the image to watch the video. See also the blog.

3 August: Roll, pitch, yaw, hand, demo, motors, switch, timing, more. Click the image to watch the video. See also the blog.

13 July: Pivot, yaw, motor, switch, Python, analysis, oops, wiring. Click the image to watch the video. See also the blog.

6 July: Motor, chain, switch, reconstructions, robustness, wiring, more. Click the image to watch the video. See also the blog.

29 June: Motor, chain, switch, reconstruction, oops, algorithm. Click the image to watch the video. See also the blog.

22 June: Pivot, motor, yaw, algorithm, chain, switch, reconstruction. Click the image to watch the video. See also the blog.

15 June: Pivot, motor, yaw, algorithm, chain, switch, oops. Click the image to watch the video. See also the blog.

8 June: Pivot, motor, reconstruction, robustness, chain, test, more. Click the image to watch the video. See also the blog.

1 June: Pivot, motor, reconstruction, robustness, chain, more. Click the image to watch the video. See also the blog.

25 May: Pivot, motor, oops, switch, robustness, reconstruction, more. Click the image to watch the video. See also the blog.

18 May: Pivot, motor, reconstruction, rewiring, oops, diagnose, more. Click the image to watch the video. See also the blog.

11 May: Pivot, motor, robustness, diagnose, sensor, reconstruction. Click the image to watch the video. See also the blog.

4 May: Gears, motors, diagnose, speed, direction, sensor, robustness. Click the image to watch the video. See also the blog.

27 April: Gears, motors, diagnose, speed, change, sensor, time. Click the image to watch the video. See also the blog.

20 April: Gears, motors, reconstruction, diagnose, speed, sensor, more. Click the image to watch the video. See also the blog.

13 April: Gears, motors, diagnose, Python, speed, sensor, direction. Click the image to watch the video. See also the blog.

6 April: Weight, modification, gears, motors, diagnose, Python. Click the image to watch the video. See also the blog.

30 March: Arm, weight, modification, robustness, gears, speed, diagnose. Click the image to watch the video. See also the blog.

23 March: Arm, modification, gears, speed, diagnose, Python. Click the image to watch the video. See also the blog.

16 March: Arm, weight, gears, speed, diagnose, tension, Python. Click the image to watch the video.
See also the blog.

9 March: Wrist, yaw, switch, winch, cord, gears, speed, diagnose. Click the image to watch the video.
See also the blog.

2 March: Wrist, yaw, switch, gears, wiring, algorithm, diagnose, gEDA. Click the image to watch the video. See also the blog.

23 February: Wrist, yaw, switch, gears, Python, algorithm, diagnose, gEDA. Click the image to watch the video. See also the blog.

16 February: Wrist, yaw, switch, gears, hand, Python, algorithm. Click the image to watch the video. See also the blog.

9 February: Winch, wrist, switch, motor, Python, hand, cord. Click the image to watch the video. See also the blog.

2 February: Winch, wrist, motor, Python, diagnose, reconstruction. Click the image to watch the video. See also the blog.

26 January: Winch, wire, wrist, switch, modification, motor, speed, diagnose, Python. Click the image to watch the video. See also the blog.

19 January: Winch, wire, motor, reconstruction, weight, diagnose, Python. Click the image to watch the video. See also the blog.

12 January: Winch, wire, motor, reconstruction, diagnose, Python. Click the image to watch the video.
See also the blog.

5 January 2018: Winch, wire, motor, diagnose, Python, direction. Click the image to watch the video. See also the blog.

29 December 2017: Gears, winch, reconstruction, motor, diagnose, Python, speed. Click the image to watch the video. See also the blog.

22 December: Gears, switch, test, wrist, wiring, motor, diagnose, Python. Click the image to watch the video. See also the blog.

15 December: Gears, wrist, wiring, diagnose, pivot, reconstruction. Click the image to watch the video. See also the blog.

8 December: Gears, elbow, wrist, wiring, diagnose, winch, wire. Click the image to watch the video. See also the blog.

1 December: Wrist, yaw, wiring, Python, winch, elbow, gears. Click the image to watch the video. See also the blog.

24 November: Gears, elbow, wrist, wiring, Python, motor, yaw. Click the image to watch the video. See also the blog.

17 November: Gears, modification, wiring, diagnose, Python, motor. Click the image to watch the video. See also the blog.

10 November: BASIC, RS232, FtUploader, diagnose, Python, motor, gears. Click the image to watch the video. See also the blog.

3 November: Wiring, RS232, USB, BASIC, ftloader, errors, diagnose, Python. Click the image to watch the video. See also the blog.

27 October: FtLoader, wine, USB, RS232, BASIC, ftuploader, error, Python. Click the image to watch the video. See also the blog.

20 October: Diagnose, ROBOPro, FtLoader, interface, settings, ftuploader. Click the image to watch the video. See also the blog.

13 October: Diagnose, switch, armbase, Python, BASIC, uploader, oops. Click the image to watch the video. See also the blog.

16 June: Test, diagnose, wiring, code. Click the image to watch the video. See also the blog.

9 June: Elbow, gear, diagnose, test. Click the image to watch the video. See also the blog.

2 June: Wrist, elbow, gear. Click the image to watch the video. See also the blog.

26 May: Diagnose, improvement, test. Click the image to watch the video. See also the blog.

19 May: Compression, diagnose, fingers, wiring. Click the image to watch the video. See also the blog.

12 May: Compression engine and fingers (again). Click the image to watch the video. See also the blog.

5 May: Compression engine and fingers. Click the image to watch the video. See also the blog.

28 April: Hand, worm gear, elbow and compressor. Click the image to watch the video. See also the blog.

21 April: Arm and hand... Click the image to watch the video. See also the blog.

14 April: Code, motor, hand, stabilization, wrist, arm. Click the image to watch the video. See also the blog.

7 April: Hand, motor, wiring, diagnostics, Python. Click the image to watch the video. See also the blog.

31 March: Pivot arm, reconstructin, diagnostics, Python. Click the image to watch the video. See also the blog.

24 March: Pivot arm, reconstruction, pivot wrist, test. Click the image to watch the video. See also the blog.

17 March: Weight, switch, pivot, wrist. Click the image to watch the video. See also the blog.

10 March: Replacement, rewiring, recoding, testing, oops. Click the image to watch the video. See also the blog.

3 March: Reconstruction, tests, diagnostics. Click the image to watch the video. See also the blog.

24 February: Wrist, switch and Python. Click the image to watch the video. See also the blog.

17 February: Wrist, switch, Python, wires, oops. Click the image to watch the video. See also the blog.

10 February 2017: Fixation and control. Click the image to watch the video. See also the blog.

3 February 2017: Motor, wiring, software. Click the image to watch the video.

27 January 2017: Time to put the wrist motor in place. Click the image to watch the video.

20 January 2017: Another (final?) pivot gear reconstruction and a little arm issue. Click the image the watch the video.

13 January 2017: Pivot gear reconstruction with oops. Click the image to watch the video.

6 January 2017: Wrist improvement, wire check. Click the image to watch the video.

30 December 2016: Wrist reconstruction and rewiring. Click the image to watch the video.

23 December 2016: Adding stability to the pivot motor and wrist reconstruction (sort of). Click the image to watch the video.

16 December 2016: Replacement of a switch, rewiring, reconstruction and tests. See the blog and click the image to watch the video.

9 December 2016: One reconstruction leads to another. But will it work? See the blog and click the image to watch the video.

2 December 2016: A reconfiguration and another reconstruction. See the blog and click the image to watch the video.

25 November 2016 A reconstruction. See the blog. Click the image to watch the video.

18 November 2016 Pivot direction, See the blog. Click the image to watch the video.

11 November 2016 Switch issues. See the blog. Click the image to watch the video.

4 November 2016 One second and a switch. See the blog. Click the image to watch the video.

28 October 2016 Pivot gear and software. See the blog. Click the image to watch the video.

21 October 2016 Pivot motor improvement. See the blog. Click the image to watch the video.

14 October 2016 Stability and working. See the blog. Click the image to watch the video.

30 September 2016 Replacing the pivot motor. See the blog. Click the image to watch the video.

22 September 2016 Pivot motor again. See the blog. Click the image to watch the video.

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16 September 2016 Timing, motor and weight issues. See the blog. Click the image to watch the video.

9 September 2016 A rather motoric episode. See the blog. Click the image to watch the video.

2 September 2016 A pivot motor solution? See the blog. Click the image to watch the video.

26 August 2016 Great test results, until....See the blog. Click the image to watch the video.

19 August 2016 Solution and reconstruction. See the blog. Click the image to watch the video.

12 August 2016 Gear problems revealed. See the blog. Click the image to watch the video.

5 August 2016 The gears have to be improved. See the blog. Click the image to watch the video.

29 July 2016 Can the elbow range be used fully. See the blog. Click the image to watch the video.

22 July 2016 Sensors are not responding. See the blog. Click the image to watch the video.

15 July 2016 Some programming. See the blog. Click the image to watch the video.

8 July 2016 (Re)placements and fixation. See the blog. Click the image to watch the video.

1 July 2016 Motors, sensors and reconstruction. See the blog. Click the image to watch video.

24 June 2016 Improvements are necessary. Click the image to watch the video. Also see the blog.

17 June 2016 Modifications and questions. Click the image to watch the video. See the blog.

10 June 2016 Checking and more. Click the image to watch the video. Also see the blog.

3 June 2016 Reconstruction continued. Click the image to watch the video. Also see the blog.

27 May 2016 Reconstruction is needed. Click the image to watch the video. See the blog.

20 May 2016 Problems make another major reconstruction is necessary. Click the image to watch the video. See the blog.

13 May 2016 Questions, results and more. Click the first image to watch the video. See the blog.

6 May 2016 Fixing the big "winch", then the motors. Then of course another issue comes up. Click the first image to watch the video. See the blog.

29 April 2016 Trying to solve the physical moment issue of the hand. Click the first image to watch the video. See the blog.

22 April 2016 A few problems with the hand. Click the image to watch the video. See the blog.

8 April 2016 Gearing problems...what to do? Click the image to watch the video. See the blog.

1 April 2016 With the current gear problems, another question pops up. Click the first image to watch the video. See the blog.

25 March 2016 Gears close-up. Click the image to watch the video. See the blog.

18 March 2016 Re-re-reconstructed elbow. Click the image to watch the video. See the blog.

11 March 2016 Shortened arm. Re-reconstructed elbow. Click the first image to watch the video. See the blog.

4 March 2016 Motor added to gears. IO Extension with corrected motor and switch wiring. Click the first image to watch the video. See the blog.

26 February 2016 Improved elbow. Attached IO extension. Click the first image to watch the video. See the blog.

12 February 2016 Other motor construction with the elbow. 2 non-metal axes holding the gear inside the elbow. See the blog.

5 February 2016 Motor/chain issues. Rewiring doesn't solve it. Click the first image to watch the video. Also see the blog.

29 January 2016 New setup of the elbow motor. The reconstruction of the elbow: side view. The reconstruction of the elbow (back view). Click the first image to watch the video. See also the blog.

22 January 2016 New setup of elbow. Click the first image to watch the video. Also see the blog.

8 January 2016 Tubes through the holes for easy access to the inside of the arm. ..and through the inside of the arm. Electrical wiring through holes.. T-pieces and stops in place to attach new tubes. Tubes connected to the valves. Overview of the new situation.See the blog.

31 December 2015 Some issues to solve. Click the image to watch the video. See also the blog

25 December 2015 Hand with arm.. Click the first image to watch the video. Also see the blog

11 December 2015 All fingers in-line: switches at the same height. Click the image to watch the video. See also the blog

4 December 2015 No picture, just a blog entry and video.
27 November 2015 Reconstruction of the hand to 4 fingers and a thumb. Elevated compression chamber to fit in all valves. Side view of all valves. Click the first image to watch the video. See also th blog.