#pcb/ring #pcb
- - -
## Parts Needed
- Processor (with BLE 5.2+)
- Curved lipo battery, ideally 20mAh+
- capacitive touch controller
- BT antenna
- Battery charging IC
- storage?
  Microphone
- PMIC
- 

|           | Name       | Cost  | Link                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |
| --------- | ---------- | ----- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| Processor | CC2340R    | $2.74 | https://www.digikey.com/en/products/detail/texas-instruments/CC2340R52E0RGER/21298701                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |
| Battery   | has sample |       | https://www.alibaba.com/product-detail/Ultra-Thin-3-7V-20mAh-Smart_1601220257715.html                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |
| Battery   |            |       | https://www.alibaba.com/product-detail/OEM-ODM-Souce-Manufacturer-150730-3_1601280065467.html?spm=a2700.prosearch.normal_offer.d_title.4bee67afcA6qVe&priceId=34efe7d3008a447ca502a742a981f37e                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |
| battery   |            |       | https://www.ebay.com/itm/156090956224?_trksid=p2332490.c101196.m2219&itmprp=cksum%3A15609095622491e9f2da655b46e9ae7c58f66effca57%7Cenc%3AAQAKAAABMIObiuteozFaahfHli5t01UIStMdUUaYczAbGaV87lJkYZlnqhPs6hnMXGASN4AJ2yFwbUKfsmeb7meQT9YaEGG7E0Yt63%252FcPRE1o4XweVgLhTT94orMyr0Mx%252BdDZRVLfC7Wpczxtkas8Mw9%252FumSKlRbEDSQOtdaIRQGFoXWzKcaUkz8lmbUd3kXand2PGndp%252B4WAOYDWusdYUsfNmNQHkKC9FCNV2FZISO37UxtjLXZcD48L6RXmZaJgXr1OzsvuAC1qIVzfx0DRRSjQg%252FGhshNi989QeLNQ6NuhGUyr71%252FaNuwvHXHOflK%252FNM6qkBeDrlzIgUHsf759aIUjD2jaRaua9w9bo0fZ%252BOU3UBp1We6Bvpzd7RajZRWTWYbtGfWE%252BY0tZuPDmfjEZqwR63GSzU%253D%7Campid%3APL_CLK%7Cclp%3A2332490&itmmeta=01KCK4T97NSVGSSJD9YT78A6BG |
| battery   |            |       | https://www.aliexpress.us/item/3256809390697337.html?spm=a2g0o.productlist.main.1.3415bCmwbCmwex&algo_pvid=190b7da2-c67e-47f0-9f56-6d86751fdda4&algo_exp_id=190b7da2-c67e-47f0-9f56-6d86751fdda4-0&pdp_ext_f=%7B%22order%22%3A%222%22%2C%22eval%22%3A%221%22%2C%22fromPage%22%3A%22search%22%7D&pdp_npi=6%40dis%21USD%2113.00%2112.35%21%21%2191.04%2186.49%21%40210319b717658751656617027e2e1a%2112000049515958749%21sea%21US%210%21ABX%211%210%21n_tag%3A-29910%3Bd%3A659c4e93%3Bm03_new_user%3A-29895&curPageLogUid=pfZkwMOA9hfh&utparam-url=scene%3Asearch%7Cquery_from%3A%7Cx_object_id%3A1005009577012089%7C_p_origin_prod%3A#nav-specification                                 |
| Processor | DA14531    |       | https://www.digikey.com/en/products/detail/renesas-electronics-corporation/DA14531-00000OG2/10474922                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |
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