frit

2024-10-21 // RBTray, Windows

RBTray
RBTray is a small Windows program that runs in the background and allows almost any window to be minimized to the system tray by right clicking its minimize button. It is free, open source, and is distributed under the terms of the GNU General Public Licence.

2024-06-30 // NOTE FREQUENCIES

NOTE	OCTAVE	FREQ
a	1	27.5
as	1	29.135
b	1	30.87
c	1	32.703
cs	1	34.648
d	1	36.708
ds	1	38.891
e	1	41.2035
f	1	43.6535
fs	1	46.2495
g	1	48.9995
gs	1	51.913
a	2	55
as	2	58.27
b	2	61.74
c	2	65.406
cs	2	69.296
d	2	73.416
ds	2	77.782
e	2	82.407
f	2	87.307
fs	2	92.499
g	2	97.999
gs	2	103.826
a	3	110
as	3	116.541
b	3	123.471
c	3	130.813
cs	3	138.591
d	3	146.832
ds	3	155.563
e	3	164.814
f	3	174.614
fs	3	184.997
g	3	195.998
gs	3	207.652
a	4	220
as	4	233.082
b	4	246.942
c	4	261.626
cs	4	277.183
d	4	293.665
ds	4	311.127
e	4	329.628
f	4	349.228
fs	4	369.994
g	4	391.995
gs	4	415.305
a	5	440
as	5	466.164
b	5	493.883
c	5	523.251
cs	5	554.365
d	5	587.33
ds	5	622.254
e	5	659.255
f	5	698.456
fs	5	739.989
g	5	783.991
gs	5	830.609
a	6	880
as	6	932.328
b	6	987.767
c	6	1046.502
cs	6	1108.73
d	6	1174.66
ds	6	1244.508
e	6	1318.51
f	6	1396.912
fs	6	1479.978
g	6	1567.982
gs	6	1661.218

2023-08-12 // REGEX REGULAR EXPRESSIONS

// Select from q to end of line
q.*$

// Select multiple qs
(q1|q2|q3)

// Select newline / carriage return
(\r\n|\n|\r)

// Select *any* whitespace
\s

// Select space character
[ ]

// Select tabulator
\t

2023-07-02 // TRIG ANGLE COS SIN TAN

c is the 'hypotenuse'
In relation to A, b is 'adjacent' and a is 'opposite'
In relation to B, a is 'adjacent' and b is 'opposite'
(C is a right angle, 90°)
Adding A, B and C will always yield 180°
The sine of angle A or B equals _opposite divided by _hypotenuse
The cosine of angle A or B equals _adjacent divided by _hypotenuse
The tangent of angle A or B equals _opposite divided by _adjacent
Degrees equals radians multiplied by 180 divided by π - ((r 180) / π)
Radians equals degrees multiplied by π divided by 180 - ((d π) / 180)

a & c

b = sqrt(c*c - a*a)

A = asin (a / c)

B = 90° - A

2023-07-02 // Whitworth Pipe Thread DIN ISO 228. dimensional data in millimeters

Nominal Diameter	Major Diameter	Minor Diameter Nut	Tapping Drill Size	Threads per Inch	Pitch
G1/8	9.73	8.85	8.80	28	0.907
G1/4	13.16	11.89	11.80	19	1.337
G3/8	16.66	15.39	15.25	19	1.337
G1/2	20.95	19.17	19.00	14	1.814
G5/8	22.91	21.13	21.00	14	1.814
G3/4	26.44	24.66	24.50	14	1.814
G7/8	30.20	28.42	28.25	14	1.814
G1	33.25	30.93	30.75	11	2.309
G1 1/8	37.90	35.58	35.30	11	2.309
G1 1/4	41.91	39.59	39.25	11	2.309
G1 3/8	44.32	42.00	41.70	11	2.309
G1 1/2	47.80	45.48	45.25	11	2.309
G1 3/4	53.74	51.43	51.10	11	2.309
G2	59.61	57.29	57.00	11	2.309
G2 1/4	65.71	63.39	63.10	11	2.309
G2 1/2	75.18	72.86	72.60	11	2.309
G2 3/4	81.53	79.21	78.90	11	2.309
G3	87.88	85.56	85.30	11	2.309
G3 1/4	93.98	91.66	91.50	11	2.309
G3 1/2	100.33	98.01	97.70	11	2.309
G3 3/4	106.68	104.30	104.00	11	2.309
G4	113.03	110.71	110.40	11	2.309

2023-07-01 // Machinist Metric ISO Screw Thread Tap - Drill Size Table Chart

Tap size	Outer diameter, MM	MM per thread	Drill size
M1.0 x 0.25	1.0	.25	.75
M1.1 x 0.25	1.1	.25	.85
M1.2 x 0.25	1.2	.25	.95
M1.4 x 0.3	1.4	.3	1.1
M1.6 x 0.35	1.6	.35	1.25
M2 x 0.4	2	.4	1.6
M2.5 x 0.45	2.5	.4	1.6
M3 x 0.5	3	.5	2.5
M3.5 x 0.6	3.5	.6	2.9
M5 x 0.8	5	.8	4.2
M6 x 1	6	1	5
M8 x 1.25	8	1.25	6.8
M8 x 1	8	1	7
M10 x 1.5	10	1.5	8.5
M10 x 1.25	10	1.25	8.8
M12 x 1.75	12	1.75	10.2
M12 x 1.25	12	1.25	10.8
M14 x 2	14	2	12
M14 x 1.5	14	1.5	12.5
M16 x 2	16	2	14
M16 x 1.5	16	1.5	14.5
M18 x 2.5	18	2.5	15.5
M18 x 1.5	18	1.5	16.5
M20 x 2.5	20	2.5	17.5
M20 x 1.5	20	1.5	18.5
M22 x 2.5	22	2.5	19.5
M22 x 1.5	22	1.5	20.5
M24 x 3	24	3	21
M24 x 2	24	2	22
M27 x 3	27	3	24
M27 x 2	27	2	25

2023-06-17 // Periodic Table

1
H

2
He

3
Li

4
Be

5
B

6
C

7
N

8
O

9
F

15
P

16
S

19
K

23
V

Lanthanides/Actinides

39
Y

53
I

74
W

92
U

2023-06-03 // SSH, SFTP, PUTTY, Notepad++, Windows, Java

Putty
PuTTY is an SSH and telnet client, developed originally by Simon Tatham for the Windows platform. PuTTY is open source software that is available with source code and is developed and supported by a group of volunteers.

Notepad++Notepad++ (with NppFTP)
Windows text editing with upload on save.