init

3DPrint/README.md

@@ -0,0 +1,6 @@
+# 3D-Printed case
+
+Printed with eSUN transparent PETG with FDM printer, assembled with UV glue.
+
+Other materials may also work.
+

3DPrint/main.scad

@@ -0,0 +1,44 @@
+$fn=32;
+
+IN_X = 43;
+IN_Y = 75;
+PCB_Z_OFFSET = 7.5;
+IN_Z = PCB_Z_OFFSET + 7;
+BORDER = 1.5;
+module pcb() {
+    square([IN_X,IN_Y]);
+}
+
+module bottom() {
+    difference() {
+        translate([0,0,-1]) linear_extrude(IN_Z+1) offset(0.5+BORDER) pcb();
+        linear_extrude(99) offset(0.5) pcb();
+        // Screen hole
+        translate([(IN_X-37)/2,50,-6]) cube([37,25,99]);
+        translate([1,-5,PCB_Z_OFFSET-2.0])  cube([15.5,10,2.5+99]); //sd
+        translate([31.5,-5,PCB_Z_OFFSET]) cube([9.5, 10, 3.5+99]); //typec
+        translate([-5, 32.8-1,PCB_Z_OFFSET]) cube([5,10.2+2,2.5+99]); // BTN
+        translate([IN_X,10.8-1,PCB_Z_OFFSET]) cube([5,5+2,5+99]); // Power
+        translate([IN_X, 30-1, PCB_Z_OFFSET])cube([5,6+2,5.5+99]); // Headphone
+    }
+    translate([-1,-1,0]) cube([13,10,PCB_Z_OFFSET-2.0]); // SD
+    translate([33,-1,0]) cube([6,7,PCB_Z_OFFSET]);
+    // Add cube on the left & right side of screen
+    translate([-1,IN_Y-14,0]) cube([4,15,PCB_Z_OFFSET]);
+    translate([IN_X-3,IN_Y-14,0]) cube([4,15,PCB_Z_OFFSET]);
+}
+
+module top() {
+    translate([0,0, IN_Z])
+    difference() {
+        linear_extrude(BORDER) offset(0.5+BORDER) 
+        pcb();
+        translate([(IN_X-37)/2,50,-6]) cube([37,25,99]);
+    }
+    //translate([-1,IN_Y-14,IN_Z-4.5]) cube([3,10,4.5]);
+    //translate([IN_X-3,IN_Y-14,IN_Z-4.5]) cube([3,10,4.5]);
+    //translate([31.5, 14, IN_Z-6]) cube([4, 4, 6]);
+}
+
+bottom();
+//top();

Firmware/README.md

@@ -0,0 +1,16 @@
+# Firmware
+
+# Flash an empty chip
+
+If the chip is empty, it will enter the download mode automatically when you connect it to the USB port. Otherwise you may need the "force-download" tool.
+
+To flash the firmware, you need to obtain the AC692x SDK v2.6.3 from the reseller of the JieLi. 
+
+```diff
+# CSDN is also a good place to find files you want.
+```
+
+After you installed the SDK, copy `sdk.app, download.bat` file to `AC692x_SDK_release_V2.6.3\apps\download\post_build\flash` folder.
+
+Then you can flash the firmware by running `download.bat` while the device is connected to the computer.
+

Hardware/README.md

@@ -0,0 +1,34 @@
+# Hardware
+
+# PCB Project
+
+https://oshwhub.com/44670/44watch_copy
+
+# Datasheets & Resources
+
+AC6921A: 
+
+- https://item.taobao.com/item.htm?id=575054598019
+
+- https://item.taobao.com/item.htm?id=616649464342
+
+- http://www.yunthinker.com/FileUpLoad/DownLoadInfosFile/637729990813300469.pdf
+
+Transparent OLED: 
+
+- https://item.taobao.com/item.htm?id=645424821640
+
+- https://www.crystalfontz.com/product/cfal12856a00151b-128x56-transparent-oled-screen
+
+AP3012:
+
+- https://www.diodes.com/assets/Datasheets/AP3012.pdf
+
+TP4057 (The direction of silkscreen is drawn in the datasheet, do not mistake it while soldering):
+
+- https://datasheet.lcsc.com/lcsc/1811021622_TOPPOWER-Nanjing-Extension-Microelectronics-TP4057-42-SOT26-R_C12044.pdf
+
+Battery:
+
+402040 3.7V Li-ion battery with **built-in protection circuit** 
+

README.md

@@ -1,2 +1,10 @@
 # 44Player
-Transparent OLED music player
+
+Transparent OLED music player, built with JieLi's AC6921A SoC.
+
+[Hardware](Hardware/README.md)
+
+[Firmware](Firmware/README.md)
+
+[3D-Printed Case](3DPrint/README.md)
+