update

content/lab-notes/Chess.md

@@ -0,0 +1,10 @@
+# Game Loop
+- display board
+- check if endgame state
+	- end game if needed
+- get current side
+- get move for current side
+
+---
+- `Game` struct contains game state
+	- Refactor to trait?

content/lab-notes/Poketch.md

@@ -1,3 +1,71 @@
 ---
 {}
 ---
+# Hardware
+- Display Resolution: 192x160
+	- potentially just upscaled from 96x80
+	- at 3x scaling that's 576x480, 32px pillarboxes if 640x480
+	- 384x320 
+- how small can the screen physically be?
+	- android guidelines say 48dp @ 160dpi or 0.3"
+		- android guidelines also say 48dp is about 9mm so who the fuck knows anymore 
+	- apple says 44pt ~~or 44/72" or 0.61"~~
+		- 44pt is 44px, 88px, 132px depending on device
+		- 132px on iPhone X @ 448(?)dpi so ~ 0.294"
+	- 192x160 is 1.2"x1"
+	- 640x480 is 4"x5" for a 6.4" diagonal
+	- 28.8" x  24" needed to meet android accessibility guidelines jfc
+	- tl;dr: Apple and Google seem to want about 0.3"per target 
+	- NDS screen size is 106.666 dpi
+		- poketch would be 1.8x1.5"
+		- **640x480 would be 2x1.5" or 2.5" diagonal**
+	- https://www.adafruit.com/product/2478 should do the trick
+		- 320x240 2.4" 
+		- we use 288x240 (1.5x)
+
+- 2 Bit grayscale
+- Touch screen 
+- 5:4 aspect ratio
+- 1/2 physical buttons
+# etc
+- will need a font 
+	- sprite based?
+	- ttf based?
+	- https://lvgl.io/tools/fontconverter
+# stretch goals
+- use wifi/ble
+	- config applet
+	- also would handle right vs left handed
+- mqtt/ntfy.sh
+	- display notifications using margins?
+- android notifications sync
+	- requires adding to gadgetbridge long term
+- pedometer
+	- needs extra hardware
+
+# Sprites
+- [x] Digital Watch
+- [x] Calculator
+- [ ] Memo Pad
+- [x] Pedometer
+- [x] Pokemon List
+- [x] Friendship Checker
+- [ ] Dowsing Machine
+- [x] Berry Searcher
+- [ ] Day-Care Checker
+- [ ] Pokemon History
+- [ ] Counter
+- [x] Analog Watch
+- [x] Marking Map
+- [x] Link Searcher
+- [ ] Coin Toss
+- [ ] Move Tester
+- [ ] Calendar
+- [ ] Dot Artist
+- [x] Roulette
+- [ ] Chain Counter
+- [x] Kitchen Timer
+- [ ] Color Changer
+- [ ] Matchup Checker
+- [ ] Stopwatch
+- [ ] Alarm Clock

content/lab-notes/Toki Pona Hex Encoding.md

@@ -0,0 +1,23 @@
+
+|     |     |
+| --- | --- |
+| a   | A   |
+| e   | E/* |
+| i   | 1   |
+| o   | 0   |
+| u   | 5   |
+| n   | 7   |
+|     |     |
+| j   | 3   |
+| k   | 9   |
+| l   | 6   |
+| m   | 4   |
+| p   | B   |
+| s   | C   |
+| t   | D   |
+| w   | 2   |
+| ∅   | F/# |
+
+D091 41 3A7 416A
+
+Ports over to DTMF as well

content/lab-notes/pkpass.md

@@ -1,3 +1,2 @@
----
+https://file-extensions.com/docs/pkpasss 
-{}
+https://developer.apple.com/documentation/walletpasses
----

content/posts/hypercomplex-interest.md

@@ -11,10 +11,10 @@ You know what, fuck you _rotates your interest rates 90°_
 Y'all remember this from like 4th grade right, I barely do so here's a refresh
 $$ z = Pe^{rt} $$
 
-- \(P\) is your principal, or how much money you initially put in or took out
+- $P$ is your principal, or how much money you initially put in or took out
-- \(r\) is the interest rate, you want this to be low if you're borrowing and high if you're lending
+- $r$ is the interest rate, you want this to be low if you're borrowing and high if you're lending
-- \(t\) is time, unless you have a TARDIS, this one is pretty out of your control
+- $t$ is time, unless you have a TARDIS, this one is pretty out of your control
-- \(z\) is how much money you owe/are owed, I know this isn't the standard variable name but bear with me
+- $z$ is how much money you owe/are owed, I know this isn't the standard variable name but bear with me
 
 Now let's make it spicy
 
@@ -26,13 +26,13 @@ Let's keep things simple for now and just rotate it around 0 like it's a circle
 
 ![The quantity $2 rotated 45 degrees about the origin, yielding a complex amount of money](Pasted%20image%2020240926154326.png)
 
-We can represent this as a complex number in the form \(z=Pe^{i\theta}\), where \(\theta\) is some angle.
+We can represent this as a complex number in the form $z=Pe^{i\theta}$, where $\theta$ is some angle.
-Hold on a second this looks kinda like the the interest rate formula from earlier. Let's add in time as a factor to get: \(z=Pe^{i\theta t}\).
+Hold on a second this looks kinda like the the interest rate formula from earlier. Let's add in time as a factor to get: $z=Pe^{i\theta t}$.
 
-Okay so we can see that this is basically just compound interest with an interest rate of \(\theta\).
+Okay so we can see that this is basically just compound interest with an interest rate of $\theta$.
 What does this even mean, can I use this to get out of student loans? Do I owe MOHELA imaginary money?
 
-Well I left out an important detail, \(Pe^{i\theta}=P\cos(t\theta)+iP\sin(t\theta)\)
+Well I left out an important detail, $Pe^{i\theta}=P\cos(t\theta)+iP\sin(t\theta)$
 
 The proof is trivial and would be left as an exercise to the reader but unfortunately I need to use it later on so here's why this works:
 
@@ -42,7 +42,7 @@ So let's say I owe 1,000 USD at a 5% interest rate (I wish lmao), that would loo
 
 > [!TODO] Todo
 
-That makes sense, but now let's look at what happens if we do \(5i\%\)
+That makes sense, but now let's look at what happens if we do $5i\%$
 ![A graph of compound interest at 5% vs 5i% interest rates](Pasted%20image%2020240926123001.png)
 Well the real part ends up being
 $$\Re(z)=P\cos(\frac\pi 2rt)$$
@@ -66,32 +66,32 @@ Normally when you rotate something you move it in a circle, which is cool and al
 ![The quantity $2 hyperbolically rotated about the origin by 45 degrees, yielding a split-complex value](Pasted%20image%2020240926154245.png)
 Introducing: the Hyperbola
 ![The unit circle (red), alongside the unit hyperbola(green)](Pasted%20image%2020240926154035.png)
-So with the unit circle we had an equation like \(x^2+y^2=1\), well there's a unit Hyperbola too and the equation for that is \(x^2-y^2=1\).
+So with the unit circle we had an equation like $x^2+y^2=1$, well there's a unit Hyperbola too and the equation for that is $x^2-y^2=1$.
 There's actually a lot more stuff that circles have that have a hyperbolic equivalent.
 
-Remember \(\sin\) and \(\cos\)? There's also a \(\sinh\) and \(\cosh\), don't ask me to explain these because we didn't cover them at all in high school.
+Remember $\sin$ and $\cos$? There's also a $\sinh$ and $\cosh$, don't ask me to explain these because we didn't cover them at all in high school.
 
-Here's the big one that we care about though, we know multiplying something by \(i\) rotates it around a circle, there's actually a \(j\) that rotates something around a hyperbola.
+Here's the big one that we care about though, we know multiplying something by $i$ rotates it around a circle, there's actually a $j$ that rotates something around a hyperbola.
 
-But what exactly is this mysterious \(j\)?. It's shrimple as really, \(j=\sqrt{1}\).
+But what exactly is this mysterious $j$?. It's shrimple as really, $j=\sqrt{1}$.
 
 > [!QUOTE] Isn't that just 1?
 
 No. don't think about it too hard
 
-> [!QUOTE] So what does \(e^{\theta j}\) break down into, if anything?
+> [!QUOTE] So what does $e^{\theta j}$ break down into, if anything?
 
 I wouldn't be asking this rhetorical if there wasn't a semi-interesting answer
-It's actually \(Pe^{j\theta t} = P\cosh(t\theta)+jP\sinh(t\theta)\)
+It's actually $Pe^{j\theta t} = P\cosh(t\theta)+jP\sinh(t\theta)$
 
 # Dual Interest rates
 
 Okay this one isn't as interesting but I want to include it for completeness,
-We have \(i=\sqrt{-1},\ j=\sqrt{1}\), now get ready for \(\varepsilon=\sqrt{0}\). I guess was taken when they invented this one?
+We have $i=\sqrt{-1},\ j=\sqrt{1}$, now get ready for $\varepsilon=\sqrt{0}$. I guess was taken when they invented this one?
 
 > [!Todo] todo
 
-while we're on the topic of dual numbers, lets try shoving \(x+\varepsilon\) into some functions for shits and giggles:
+while we're on the topic of dual numbers, lets try shoving $x+\varepsilon$ into some functions for shits and giggles:
 $$(x+\varepsilon)^2=x^2+2x\varepsilon+\varepsilon^2=2x\varepsilon$$
 
 > [!quote] Okay that was a waste of time, was that supposed to be interesting?
@@ -100,9 +100,9 @@ Yes. I'm getting there
 $$\sin(x+\varepsilon)=(x+\varepsilon)-\frac{(x+\varepsilon)^3}{3!}+\frac{(x+\varepsilon)^5}{5!}\ldots$$
 Okay now lets expand that out
 $$=(x+\varepsilon)-\frac{x^3+3x^2\varepsilon+3x\varepsilon^2+\varepsilon^3}{3!}+\frac{x^5+5x^4\varepsilon+10x^3\epsilon^2+10x^2\varepsilon^3+5x\varepsilon^4+\varepsilon^5}{5!}\ldots$$
-of course \(\varepsilon\) to powers higher than 1 just ends up being zero so we can simplify this monstrosity down to
+of course $\varepsilon$ to powers higher than 1 just ends up being zero so we can simplify this monstrosity down to
 $$=x+\varepsilon-\frac{x^3+3x^2\varepsilon}{3!}+\frac{x^5+5x^4\varepsilon}{5!}$$
-...except this still doesn't mean too much, lets try factoring \(\varepsilon\) out
+...except this still doesn't mean too much, lets try factoring $\varepsilon$ out
 $$(x-\frac{x^3}{3!}+\frac{x^5}{5!}+\ldots)+\varepsilon(1-\frac{x^2}{2!}+\frac{x^4}{4!})$$
 $$=\sin(x)+-\cos(x)\varepsilon$$
 
@@ -110,10 +110,10 @@ $$=\sin(x)+-\cos(x)\varepsilon$$
 
 Yeah actually. If you remember back to 8th grade,
 $$f'(x)=\frac{d}{dx}f(x)=\lim_{h\to0}\frac{f(x+h)-f(x)}{h}$$
-We can kinda replace \(h\to 0\) here with \(\varepsilon\) since it's basically an infinitely tiny number that's not zero or negative, which gives us
+We can kinda replace $h\to 0$ here with $\varepsilon$ since it's basically an infinitely tiny number that's not zero or negative, which gives us
 $$f'(x)=\frac{f(x+\varepsilon)-f(x)}{\varepsilon}$$
 
-> [!note] Dividing by is sus as fuck, but just bear with me here
+> [!note] Dividing by $\varepsilon$ is sus as fuck, but just bear with me here
 
 $$\varepsilon f'(x)=f(x+\varepsilon)-f(x)$$
 $$f(x+\varepsilon)=f(x)=\varepsilon f'(x)$$
@@ -123,12 +123,12 @@ There you go, typesetting this was a bitch.
 
 ## Matrix Representations
 
-Fun fact, you can also represent \(i,j,\varepsilon\) as matrices too
+Fun fact, you can also represent $i,j,\varepsilon$ as matrices too
-Its already kinda standard to use \(\begin{bmatrix}1&0\\0&1\end{bmatrix}\) to cast real numbers into 2D matrices, but there's two zeros in there doing nothing, maybe we can yoink those for real estate.
+Its already kinda standard to use $\begin{bmatrix}1&0\\0&1\end{bmatrix}$ to cast real numbers into 2D matrices, but there's two zeros in there doing nothing, maybe we can yoink those for real estate.
 
 Introducing:
 $$i=\begin{bmatrix}0&1\\-1&0\end{bmatrix},\ j=\begin{bmatrix}0&1\\1&0\end{bmatrix},\ \varepsilon=\begin{bmatrix}0&1\\0&0\end{bmatrix}$$
-These versions actually obey the same multiplication rules as our original derivations of the hypercomplex numbers. Now we can turn something like \(6+3j\) into \(\begin{bmatrix}6&3\\3&6\end{bmatrix}\)
+These versions actually obey the same multiplication rules as our original derivations of the hypercomplex numbers. Now we can turn something like $6+3j$ into $\begin{bmatrix}6&3\\3&6\end{bmatrix}$
 
 ## Colors
 
@@ -136,7 +136,7 @@ As somewhat of a convention, I use red, green, and blue in this post to differen
 
 ## Honey, I broke the concept of division!
 
-Yeah... division doesn't really work right when you bring \(j\) and \(\varepsilon\) into the mix since you can multiply non-zero stuff and get zero out
+Yeah... division doesn't really work right when you bring $j$ and $\varepsilon$ into the mix since you can multiply non-zero stuff and get zero out
 
 $$\frac{1}{1+j}\cdot\frac{1}{1-j}=\frac{1}{1-j^2}=\frac{1}{1-1}=\frac10$$
 $$\frac 1\varepsilon \cdot \frac 1\varepsilon=\frac 1{\varepsilon^2}=\frac 10$$