ExpressLRS Gemini 900/433 Tx

Ongoing

STD ExpressLRS Gemini 900/433 Tx

2.4G/RF

Radio_Frequency

License: GPL 3.0

Mode:

Editors' pick

Cloned from ExpressLRS Gemini Tx

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Update time： 2023-12-27 05:20:41

Creation time： 2022-12-16 08:42:08

Description

This is a dual frequency module prototype for the ExpressLRS project. It is designed to be an internal TX16s module, but can be easily used has an external module. An esp01 is included to be used as a Backpack and can be flash via passthrough.

Here is a TX16 dual antenna print.

https://www.tinkercad.com/things/2SKwpFs5M9j-tx16s-dual-antenna

Design Drawing

schematic diagram

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PCB

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PCB_ExpressLRS Gemini 900/433 Tx
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BOM

BOM download Purchase Parts

ID	Name	Designator	Footprint	Quantity
1	WIRELESS-LORA-RFM95W#SMD	1,2	WIRELESS-LORA-RFM95W#SMD	2
2	Micro tactile switch	BOOT1,BOOT2	2 PIN SWITCH	2
3	100nF	C1,C2,C6,C7	C0402	4
4	2.2uF	C3,C4,C22	C0603	3
5	1uF	C5,C9,C23,C24	C0402	4
6	100pF	C8	C0402	1
7	10nF	C10	C0402	1
8	10uF	C12	C0402	1
9	2.2uF	C_1	C0402	1
10	2mm PAD	D1,D2,D3,D4,D5,D6,D7,D8,D9,D10,D11	2MM-POGO-PAD	11
11	CONUFL001-SMD-T_CONUFL001-SMD-T	J1,J2	CONUFL001-SMD-T_CONUFL001-SMD	2
12	Jumper pad	JP1,JP2	JUMPERPADS	2
13	16-213/GHC-YR1S1/3T	LED1,LED3,LED4,LED5	LED0402-R-RD	4
14	WS2812B	LED8	LED-SMD_4P-L5.0-W5.0-TL	1
15	SS8050_C2150	Q1	SOT-23-3_L2.9-W1.3-P1.90-LS2.4-BR	1
16	150Ω	R1,R3,R5,R6,R7,R14	R0402	6
17	1K	R2,R4,R11,R15	R0402	4
18	10K	R8,R9,R12,R13,R16	R0402	5
19	4.7K	R10	R0402	1
20	4 pin header	REG1	4 PIN HADER	1
21	ESP32-PICO-D4	U1	QFN-48_L7.0-W7.0-P0.50-BL-EP5.4	1
22	ZL6205A33TS5	U2,U3,U8	TSOT-23-5_L2.9-W1.6-P0.95-LS2.8-BL	3
23	ESP-01F	U4	ESP-01F-SL 11MM WIDTH	1
24	2.4G ANTENNA	U5,U6	2.4G ANTENNA	2
25	2x3mm Pads 9-fach mit Plus	U9	SOLDERPADSQUARE_9P	1