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Changes to Step #28

Edit by Robert Shuler

Edit approved by Robert Shuler

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[* black] Main PCB Backside Close Up View. Please leave a comment if you know information about U1, U26, and U42
[* orange] [http://www.ti.com/product/BQ25898|U21 - I2C Single Cell 3A Charger, TI BQ25898]
[* green] [https://www.winbond.com/resource-files/w631gu6kb_a07.pdf|Winbond 8M x 8 Banks x 16 Bit, W631GU6MB121]
[* light_blue] U1 Part Markings: OA00805-B56G, TIVH62. Appears to be the video image processor
[* red] [https://www.cypress.com/file/384986/download|U7 - Cypress Ultra-Low Power, 802.11a/b/g/n WiFi/BLuetooth 5.0 Controller]
[* blue] U26, and U42 Part Markings: PA61, TI 871, A241, and 851DD, TI 838, A827
[* black] RF Front end with RF Switches, RF Bandpass Filter, and possible a RF PA
[* violet] Dual WiF / BluetoothiBluetooth Antennas
[* violet] Dual WiF / BluetoothiBluetooth Antennas