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--- projects:amateur_radio:meshtastic:diy_devices:ikoka_nano [2024/05/08 04:19] – removed - external edit (Unknown date) 127.0.0.1
+++ projects:amateur_radio:meshtastic:diy_devices:ikoka_nano [2024/05/11 05:00] (current) – Sync ordering PCB steps with GH README.md Andrew Yong
@@ Line 1: / Line 1: @@
+====== Ikoka Nano Meshtastic Device ======
+**GitHub repo: [[https://github.com/ndoo/ikoka-nano-meshtastic-device]]**
+A Meshtastic device based on the [[https://www.seeedstudio.com/Seeed-XIAO-BLE-nRF52840-p-5201.html|Seeed Studio XIAO nRF52840]] and EBYTE E22-XXXMXXS series LoRa modules. Pinout matches the [[https://github.com/meshtastic/firmware/tree/master/variants/xiao_ble|Meshtastic xiao_ble variant]].
+The focus is on small size without an onboard display or buttons, meaning it must be used with [[https://meshtastic.org/docs/software/|Meshtastic client software]], or as a remote repeater managed with [[https://meshtastic.org/docs/configuration/remote-admin/|remote node administration]].
+===== Connectors =====
+  * Qwiic connector for I²C sensors
+===== Libraries Used =====
+  * [[https://www.snapeda.com/parts/E22-900M30S/EBYTE/view-part/|SnapMagic E22-900M30S footprint & symbol]]
+  * [[https://github.com/sparkfun/SparkFun-KiCad-Libraries|SparkFun KiCad Libraries]]
+  * [[https://github.com/ndoo/OPL_Kicad_Library/tree/xiao-ble-symbols|SeeedStudio OPL KiCad Library]] (forked to add missing XIAO nRF5240 symbol)
+===== Building One =====
+==== Software Required ====
+  * The files were created in [[https://www.kicad.org/|KiCad]] 8
+  * Clone this git repository recursively, i.e. with ''--recursive''
+=== Ordering PCBs ===
+  * Follow the instructions to generate Gerbers at your PCB house, e.g. [[https://jlcpcb.com/help/catalog/180-PCB-Files-Preparation|JLCPCB PCB Files Preparation]]
+  * Default 1.6mm 2-layer PCB settings should work well, this PCB passes DRC based on JLCPCB specifications (other than the silkscreen of XIAO module being clipped by the PCB edge)
+  * PCBA: I used [[https://github.com/bennymeg/Fabrication-Toolkit|JLC PCB Plug-in for KiCad]] to generate a BOM and CPL file compatible with JLCPCB PCBA
+==== Ordering Components ====
+  * LCSC
+    * 1* [[https://www.lcsc.com/product-detail/LoRa-Modules_Chengdu-Ebyte-Elec-Tech-E22-900M30S_C411294.html|EBYTE E22-900M30S]]
+    * 1* [[https://www.lcsc.com/product-detail/Wire-To-Board-Wire-To-Wire-Connector_JST-SM04B-SRSS-TB-LF-SN_C160404.html|JST SM04B-SRSS-TB(LF)(SN)]]
+    * 1* [[https://www.lcsc.com/product-detail/Multilayer-Ceramic-Capacitors-MLCC-SMD-SMT_Murata-Electronics-GRM31CR60J107ME39L_C77085.html|Murata GRM31CR60J107ME39L]]
+  * Seeed Studio
+    * 1* [[https://www.seeedstudio.com/Seeed-XIAO-BLE-nRF52840-p-5201.html|Seeed Studio XIAO nRF52840]]
+==== Assembling the PCB ====
+  - Solder U2 E22 module
+  - Solder U1 XIAO nRF52840
+  - Solder C1
+  - Solder Qwiic socket
+==== Flashing ====
+Follow the instructions at [[https://github.com/meshtastic/firmware/tree/master/variants/xiao_ble|meshtastic/firmware/variants/xiao_ble/]].
+==== PCB Images ====
+{{:projects:amateur_radio:meshtastic:diy_devices:ikoka-nano-rotating.gif}}

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