Changes in 7c6d7c5: esp32

				Chip-cn-dat/Espressif-dat/ESP32-S3-DAT/ESP32-S3-HDK-dat/2026-07-15-16-49-29.png
			
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				Chip-cn-dat/Espressif-dat/ESP32-S3-DAT/ESP32-S3-HDK-dat/ESP32-S3-HDK-dat.md
			
          @@ -16,15 +16,28 @@

           - [[SPI-dat]] - [[serial-dat]] - [[ESP32-S3-HDK-dat]] - [[74HC4067-dat]] - [[LED-RGB-dat]]

          +w/ module 

           ![](2026-07-15-16-29-39.png)

          +w/o module 

          +

          +![](2026-07-15-16-49-29.png)

          +

          +### common periperhals 

          +

          +![](2026-07-15-16-50-01.png)

           ### program 

           ![](2026-07-15-16-45-54.png)

          +

          +## app 

          +

          +- [[SX1281-dat]] - [[semtech-dat]]

          +

           ## ref 

           - [[ESP32-S3-dat]]

				Chip-dat/SemTech-dat/SX1281-dat/2026-07-15-16-51-26.png
			
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				Chip-dat/SemTech-dat/SX1281-dat/SX1281-dat.md
			
          @@ -0,0 +1,19 @@

          +

          +

          +# SX1281-dat

          +

          +

          +- [[ESP32-S3-HDK-dat]] - [[semtech-dat]] - [[SX1281-dat]]

          +

          +- [[ELRS-dat]]

          +

          +

          +## SCH 

          +

          +![](2026-07-15-16-51-26.png)

          +

          +

          +

          +

          +## ref 

          +

				Chip-dat/SemTech-dat/SemTech-dat.md
			
          @@ -1,48 +1,48 @@

          -

          -# SemTech-dat

          -

          -

          -

          -

          -- [[LR1121-dat]] - LoRa Connect™ LR1121 for Multi-Band Global Connectivity

          -

          -- [[SX1302-dat]] == [[lora-gateway-dat]]

          -

          -https://www.semtech.com/products/wireless-rf

          -

          -- [[SX1262-dat]] == [[Lora-front-end-dat]]

          -

          -- [[LLCC68-dat]] == https://www.semtech.com/products/wireless-rf/lora-connect/llcc68

          -

          -[LoRa RF Transceiver Module RA-01SC LLCC68](https://www.electrodragon.com/product/lora-rf-transceiver-module-ra-01sc-llcc68/)

          -

          -- [[SX1278-dat]] == [[SX1276-dat]]

          -

          -- [[SX1268-dat]]

          -

          -- [[SX1272-dat]] == [[RFM92-dat]]

          -

          -## Compare 

          -

          -| Chip   | IP Generation | Frequency Bands              | Max Tx Power | Rx Sensitivity (LoRa) | Modulation     | Key Features / Generation                                                                               |

          -| :----- | :------------ | :--------------------------- | :----------- | :-------------------- | :------------- | :------------------------------------------------------------------------------------------------------ |

          -| LR2021 | 4st gen       | 150-960, 1600-2500           | N/A          | N/A                   | N/A            | Data not available.                                                                                     |

          -| LR1121 | 3st gen       | 150-960 MHz, 2.4 GHz, S-Band | +22 dBm      | -144 dBm              | LoRa, (G)FSK   | LoRa Edge™: Multi-band, includes GNSS (GPS/BeiDou) and Wi-Fi passive scanner for low-power geolocation. |

          -| SX1262 | 2nd Gen       | 150-960 MHz                  | +22 dBm      | -148 dBm              | LoRa, (G)FSK   | 2nd Gen: Significantly lower power consumption and higher link budget than SX127x series.               |

          -| SX1268 | 2nd Gen       | 410-810 MHz                  | +22 dBm      | -148 dBm              | LoRa, (G)FSK   | 2nd Gen: Regional variant of SX1262, optimized for Chinese frequency bands.                             |

          -| LLCC68 | 2nd Gen       | 150-960 MHz                  | +22 dBm      | -129 dBm              | LoRa, (G)FSK   | 2nd Gen: Optimized for LoRaWAN end-nodes using lower spreading factors (SF5-SF9). Not for SF10-SF12.    |

          -| SX1276 | 1st Gen       | 137-1020 MHz                 | +20 dBm      | -148 dBm              | LoRa, FSK, OOK | 1st Gen (Legacy): Higher power consumption than SX126x/LLCC68 series.                                   |

          -| SX1278 | 1st Gen       | 137-525 MHz                  | +20 dBm      | -148 dBm              | LoRa, FSK, OOK | 1st Gen (Legacy): Variant of SX1276, optimized for 433/470 MHz bands.                                   |

          -| SX1272 | 1st Gen       | 860-1020 MHz                 | +20 dBm      | -137 dBm              | LoRa, FSK, OOK | 1st Gen (Legacy): Predecessor to SX1276 with lower sensitivity.                                         |

          -

          -

          -

          -## ref 

          -

          -- [[meshtastic-dat]] - [[opensource-dat]]

          -

          -- [[lora-dat]] 

          -

          -- [[STM32-dat]]

          -

          +

          +# SemTech-dat

          +

          +

          +- [[SX1281-dat]] - [[semtech-dat]]

          +

          +- [[LR1121-dat]] - LoRa Connect™ LR1121 for Multi-Band Global Connectivity

          +

          +- [[SX1302-dat]] == [[lora-gateway-dat]]

          +

          +https://www.semtech.com/products/wireless-rf

          +

          +- [[SX1262-dat]] == [[Lora-front-end-dat]]

          +

          +- [[LLCC68-dat]] == https://www.semtech.com/products/wireless-rf/lora-connect/llcc68

          +

          +[LoRa RF Transceiver Module RA-01SC LLCC68](https://www.electrodragon.com/product/lora-rf-transceiver-module-ra-01sc-llcc68/)

          +

          +- [[SX1278-dat]] == [[SX1276-dat]]

          +

          +- [[SX1268-dat]]

          +

          +- [[SX1272-dat]] == [[RFM92-dat]]

          +

          +## Compare 

          +

          +| Chip   | IP Generation | Frequency Bands              | Max Tx Power | Rx Sensitivity (LoRa) | Modulation     | Key Features / Generation                                                                               |

          +| :----- | :------------ | :--------------------------- | :----------- | :-------------------- | :------------- | :------------------------------------------------------------------------------------------------------ |

          +| LR2021 | 4st gen       | 150-960, 1600-2500           | N/A          | N/A                   | N/A            | Data not available.                                                                                     |

          +| LR1121 | 3st gen       | 150-960 MHz, 2.4 GHz, S-Band | +22 dBm      | -144 dBm              | LoRa, (G)FSK   | LoRa Edge™: Multi-band, includes GNSS (GPS/BeiDou) and Wi-Fi passive scanner for low-power geolocation. |

          +| SX1262 | 2nd Gen       | 150-960 MHz                  | +22 dBm      | -148 dBm              | LoRa, (G)FSK   | 2nd Gen: Significantly lower power consumption and higher link budget than SX127x series.               |

          +| SX1268 | 2nd Gen       | 410-810 MHz                  | +22 dBm      | -148 dBm              | LoRa, (G)FSK   | 2nd Gen: Regional variant of SX1262, optimized for Chinese frequency bands.                             |

          +| LLCC68 | 2nd Gen       | 150-960 MHz                  | +22 dBm      | -129 dBm              | LoRa, (G)FSK   | 2nd Gen: Optimized for LoRaWAN end-nodes using lower spreading factors (SF5-SF9). Not for SF10-SF12.    |

          +| SX1276 | 1st Gen       | 137-1020 MHz                 | +20 dBm      | -148 dBm              | LoRa, FSK, OOK | 1st Gen (Legacy): Higher power consumption than SX126x/LLCC68 series.                                   |

          +| SX1278 | 1st Gen       | 137-525 MHz                  | +20 dBm      | -148 dBm              | LoRa, FSK, OOK | 1st Gen (Legacy): Variant of SX1276, optimized for 433/470 MHz bands.                                   |

          +| SX1272 | 1st Gen       | 860-1020 MHz                 | +20 dBm      | -137 dBm              | LoRa, FSK, OOK | 1st Gen (Legacy): Predecessor to SX1276 with lower sensitivity.                                         |

          +

          +

          +

          +## ref 

          +

          +- [[meshtastic-dat]] - [[opensource-dat]]

          +

          +- [[lora-dat]] 

          +

          +- [[STM32-dat]]

          +

           - [[semtech]]

          \ No newline at end of file

				fab-tools-dat/fab-tools-electronic-dat/meter-dat/meter-energy-dat/meter-energy-dat.md
			
          @@ -19,3 +19,4 @@

           ## ref 

          +- [[meter-energy]] - [[meter]] - [[fab-tools]]

          \ No newline at end of file

				projects-dat/github-projects-dat/github-projects-dat.md
			
          @@ -11,3 +11,8 @@ https://github.com/topics/open-source-hardware

           https://github.com/delftopenhardware/awesome-open-hardware

          +

          +

          +

          +## ref 

          +

...	...	@@ -16,15 +16,28 @@
16	16
17	17	- [[SPI-dat]] - [[serial-dat]] - [[ESP32-S3-HDK-dat]] - [[74HC4067-dat]] - [[LED-RGB-dat]]
18	18
	19	+w/ module
19	20
20	21	![](2026-07-15-16-29-39.png)
21	22
	23	+w/o module
	24	+
	25	+![](2026-07-15-16-49-29.png)
	26	+
	27	+### common periperhals
	28	+
	29	+![](2026-07-15-16-50-01.png)
22	30
23	31	### program
24	32
25	33	![](2026-07-15-16-45-54.png)
26	34
27	35
	36	+
	37	+## app
	38	+
	39	+- [[SX1281-dat]] - [[semtech-dat]]
	40	+
28	41	## ref
29	42
30	43	- [[ESP32-S3-dat]]

...	...	@@ -0,0 +1,19 @@
	1	+
	2	+
	3	+# SX1281-dat
	4	+
	5	+
	6	+- [[ESP32-S3-HDK-dat]] - [[semtech-dat]] - [[SX1281-dat]]
	7	+
	8	+- [[ELRS-dat]]
	9	+
	10	+
	11	+## SCH
	12	+
	13	+![](2026-07-15-16-51-26.png)
	14	+
	15	+
	16	+
	17	+
	18	+## ref
	19	+

...	...	@@ -1,48 +1,48 @@
1		-
2		-# SemTech-dat
3		-
4		-
5		-
6		-
7		-- [[LR1121-dat]] - LoRa Connect™ LR1121 for Multi-Band Global Connectivity
8		-
9		-- [[SX1302-dat]] == [[lora-gateway-dat]]
10		-
11		-https://www.semtech.com/products/wireless-rf
12		-
13		-- [[SX1262-dat]] == [[Lora-front-end-dat]]
14		-
15		-- [[LLCC68-dat]] == https://www.semtech.com/products/wireless-rf/lora-connect/llcc68
16		-
17		-[LoRa RF Transceiver Module RA-01SC LLCC68](https://www.electrodragon.com/product/lora-rf-transceiver-module-ra-01sc-llcc68/)
18		-
19		-- [[SX1278-dat]] == [[SX1276-dat]]
20		-
21		-- [[SX1268-dat]]
22		-
23		-- [[SX1272-dat]] == [[RFM92-dat]]
24		-
25		-## Compare
26		-
27		-\| Chip \| IP Generation \| Frequency Bands \| Max Tx Power \| Rx Sensitivity (LoRa) \| Modulation \| Key Features / Generation \|
28		-\| :----- \| :------------ \| :--------------------------- \| :----------- \| :-------------------- \| :------------- \| :------------------------------------------------------------------------------------------------------ \|
29		-\| LR2021 \| 4st gen \| 150-960, 1600-2500 \| N/A \| N/A \| N/A \| Data not available. \|
30		-\| LR1121 \| 3st gen \| 150-960 MHz, 2.4 GHz, S-Band \| +22 dBm \| -144 dBm \| LoRa, (G)FSK \| LoRa Edge™: Multi-band, includes GNSS (GPS/BeiDou) and Wi-Fi passive scanner for low-power geolocation. \|
31		-\| SX1262 \| 2nd Gen \| 150-960 MHz \| +22 dBm \| -148 dBm \| LoRa, (G)FSK \| 2nd Gen: Significantly lower power consumption and higher link budget than SX127x series. \|
32		-\| SX1268 \| 2nd Gen \| 410-810 MHz \| +22 dBm \| -148 dBm \| LoRa, (G)FSK \| 2nd Gen: Regional variant of SX1262, optimized for Chinese frequency bands. \|
33		-\| LLCC68 \| 2nd Gen \| 150-960 MHz \| +22 dBm \| -129 dBm \| LoRa, (G)FSK \| 2nd Gen: Optimized for LoRaWAN end-nodes using lower spreading factors (SF5-SF9). Not for SF10-SF12. \|
34		-\| SX1276 \| 1st Gen \| 137-1020 MHz \| +20 dBm \| -148 dBm \| LoRa, FSK, OOK \| 1st Gen (Legacy): Higher power consumption than SX126x/LLCC68 series. \|
35		-\| SX1278 \| 1st Gen \| 137-525 MHz \| +20 dBm \| -148 dBm \| LoRa, FSK, OOK \| 1st Gen (Legacy): Variant of SX1276, optimized for 433/470 MHz bands. \|
36		-\| SX1272 \| 1st Gen \| 860-1020 MHz \| +20 dBm \| -137 dBm \| LoRa, FSK, OOK \| 1st Gen (Legacy): Predecessor to SX1276 with lower sensitivity. \|
37		-
38		-
39		-
40		-## ref
41		-
42		-- [[meshtastic-dat]] - [[opensource-dat]]
43		-
44		-- [[lora-dat]]
45		-
46		-- [[STM32-dat]]
47		-
	1	+
	2	+# SemTech-dat
	3	+
	4	+
	5	+- [[SX1281-dat]] - [[semtech-dat]]
	6	+
	7	+- [[LR1121-dat]] - LoRa Connect™ LR1121 for Multi-Band Global Connectivity
	8	+
	9	+- [[SX1302-dat]] == [[lora-gateway-dat]]
	10	+
	11	+https://www.semtech.com/products/wireless-rf
	12	+
	13	+- [[SX1262-dat]] == [[Lora-front-end-dat]]
	14	+
	15	+- [[LLCC68-dat]] == https://www.semtech.com/products/wireless-rf/lora-connect/llcc68
	16	+
	17	+[LoRa RF Transceiver Module RA-01SC LLCC68](https://www.electrodragon.com/product/lora-rf-transceiver-module-ra-01sc-llcc68/)
	18	+
	19	+- [[SX1278-dat]] == [[SX1276-dat]]
	20	+
	21	+- [[SX1268-dat]]
	22	+
	23	+- [[SX1272-dat]] == [[RFM92-dat]]
	24	+
	25	+## Compare
	26	+
	27	+\| Chip \| IP Generation \| Frequency Bands \| Max Tx Power \| Rx Sensitivity (LoRa) \| Modulation \| Key Features / Generation \|
	28	+\| :----- \| :------------ \| :--------------------------- \| :----------- \| :-------------------- \| :------------- \| :------------------------------------------------------------------------------------------------------ \|
	29	+\| LR2021 \| 4st gen \| 150-960, 1600-2500 \| N/A \| N/A \| N/A \| Data not available. \|
	30	+\| LR1121 \| 3st gen \| 150-960 MHz, 2.4 GHz, S-Band \| +22 dBm \| -144 dBm \| LoRa, (G)FSK \| LoRa Edge™: Multi-band, includes GNSS (GPS/BeiDou) and Wi-Fi passive scanner for low-power geolocation. \|
	31	+\| SX1262 \| 2nd Gen \| 150-960 MHz \| +22 dBm \| -148 dBm \| LoRa, (G)FSK \| 2nd Gen: Significantly lower power consumption and higher link budget than SX127x series. \|
	32	+\| SX1268 \| 2nd Gen \| 410-810 MHz \| +22 dBm \| -148 dBm \| LoRa, (G)FSK \| 2nd Gen: Regional variant of SX1262, optimized for Chinese frequency bands. \|
	33	+\| LLCC68 \| 2nd Gen \| 150-960 MHz \| +22 dBm \| -129 dBm \| LoRa, (G)FSK \| 2nd Gen: Optimized for LoRaWAN end-nodes using lower spreading factors (SF5-SF9). Not for SF10-SF12. \|
	34	+\| SX1276 \| 1st Gen \| 137-1020 MHz \| +20 dBm \| -148 dBm \| LoRa, FSK, OOK \| 1st Gen (Legacy): Higher power consumption than SX126x/LLCC68 series. \|
	35	+\| SX1278 \| 1st Gen \| 137-525 MHz \| +20 dBm \| -148 dBm \| LoRa, FSK, OOK \| 1st Gen (Legacy): Variant of SX1276, optimized for 433/470 MHz bands. \|
	36	+\| SX1272 \| 1st Gen \| 860-1020 MHz \| +20 dBm \| -137 dBm \| LoRa, FSK, OOK \| 1st Gen (Legacy): Predecessor to SX1276 with lower sensitivity. \|
	37	+
	38	+
	39	+
	40	+## ref
	41	+
	42	+- [[meshtastic-dat]] - [[opensource-dat]]
	43	+
	44	+- [[lora-dat]]
	45	+
	46	+- [[STM32-dat]]
	47	+
48	48	- [[semtech]]
...	...	\ No newline at end of file

...	...	@@ -19,3 +19,4 @@
19	19	## ref
20	20
21	21
	22	+- [[meter-energy]] - [[meter]] - [[fab-tools]]
...	...	\ No newline at end of file

...	...	@@ -11,3 +11,8 @@ https://github.com/topics/open-source-hardware
11	11	https://github.com/delftopenhardware/awesome-open-hardware
12	12
13	13
	14	+
	15	+
	16	+
	17	+## ref
	18	+