1. Kupu Whakataki
He waeine iti, he mahi-teitei hoki te Waveshare LC76G (Global Navigation Satellite System) i hangaia mō ngā tono tūnga tika. Ka tautokohia e ia te whānuitanga o ngā pūnaha amiorangi tae atu ki te GPS, BeiDou (BDS), GLONASS, Galileo, me te QZSS, kia pakari ai, kia tika ai hoki ngā raraunga tūnga. Kei roto i tēnei waeine he pūnaha Haruru-Iti kua hangaia ki roto. Amplifier (LNA) hei whakarei ake i te aro ki te whiwhinga me te tautoko i ngā atanga whakawhitiwhiti UART me I2C, kia maha ai ngā whakamahinga mō ngā kaupapa whakauru. Kei roto hoki ngā mahi EPO (Extended Predictive Orbit) me EASY (Embedded Assist System) hei tere ake te wā-ki-te-tuatahi-whakatika (TTFF) me te whakapai ake i te mahi.
Kei roto i tēnei pukapuka ngā mōhiotanga nui mō te whakatū, te whakahaere, me te tiaki i tō LC76G Multi-GNSS Module.
2. Ihirangi mokete
Manatokohia kei roto i to kete nga mea katoa kua whakarārangihia i raro nei:
Pikitia: Ngā ihirangi o te kete e whakaatu ana i te Module LC76G GNSS me te taura MX1.25 8PIN.
- 1x LC76G GNSS Module
- 1x taura MX1.25 8PIN
3. Nga waahanga matua
Kei roto i te Module LC76G GNSS ēnei āhuatanga matua e whai ake nei:
Pikitia: He whakaaturanga ā-kanohi o te waeine LC76G GNSS me ōna āhuatanga matua kua whakarārangihia.
- Tautoko i ngā pūnaha Maha-GNSS: GPS, BeiDou (BDS), GLONASS, Galileo, me QZSS.
- E tautoko ana i ngā atanga whakawhitiwhiti UART me I2C.
- Haruru-Hangai-i roto Amplifier (LNA) hei whakapai ake i te aro ki te whiwhinga.
- E tautoko ana i ngā mahi EPO (Extended Predictive Orbit) me EASY (Embedded Assist System) mō te tere ake o te hopu.
- Tautoko ana i te putanga 1PPS (Kotahi te Pānga ia Hekona) mō te wā tika.
- Te tere whakawhiti kōrero UART: Ka taea te whirihora mai i te 9600 ki te 921600bps (taunoa 115200bps).
- Pūhiko Li ka taea te whakahou (MS621FE) hei tiaki i ngā mōhiohio ephemeris me te whakahohe i ngā tīmatanga wera.
- E rua ngā rama LED hei tohu i te mana mahi o te waeine (Mana me te PPS).
- Kei roto ngā rauemi whakawhanake ipurangi me te tauira ā-ringaampngā kōnae mō ngā tūāpapa rerekē (Raspberry Pi, Raspberry Pi Pico, Jetson Nano, Arduino, ESP32).
4. Whakamāramatanga o te Pinout
He mea nui te mārama ki te pinout mō te whakaurunga tika o te kōwae LC76G ki tō pūrere manaaki.
Pikitia: He hoahoa taipitopito o ngā wāhanga me te pine o te kōwae LC76G, tae atu ki te hononga GH1.25 8PIN.
| Pin | Whakaahuatanga |
|---|---|
| VCC | Tuku hiko (3.3V/5V) |
| GND | Papa whenua |
| TX | Hono atu ki MCU.RX (Ahunga tohu: TX >> MCU.RX) |
| RX | Hono atu ki MCU.TX (Ahunga tohu: MCU.TX >> RX) |
| PPS | Tohu tūnga GPS / putanga 1PPS |
| RST | Tautuhi Pene |
| SDA | Pine raraunga I2C |
| SCL | Pine karaka I2C |
5. Ngā Whakatakotoranga me ngā Tawhā
Kei te ripanga e whai ake nei ngā whakatakotoranga hangarau matua me ngā tawhā mahi mō te LC76G GNSS Module.
Pikitia: Te whakataurite taipitopito o ngā tawhā hangarau mō ngā kōwae LC76G me L76K GNSS.
| Tawhā | LC76G(AB) |
|---|---|
| GNSS | GPS/GLONASS/Galileo/BDS/QZSS |
| Paparanga maramara | AG3352 |
| Kaiwhiwhi Rōpū L1 | 47 Ngā hongere aroturuki |
| SBAS | Tautoko |
| A-GNSS | Tautoko |
| Te Hoko Maamaa | -147dBm |
| Te aro ki te hopu anō | -159dBm |
| Aroturuki Tairongo | -166dBm |
| Ka timata te makariri | 26s, Aunoa; 12s, Me te EASY™; 5s, Me te EPO™ |
| Ngā Tīmatanga Mahana | 20 tau, Mana Motuhake; 2 tau, Me te EASY™ |
| Ngā Tīmatanga Wera | 1s |
| Te Tika o te Turanga | 1.5m CEP |
| Te Tikanga Tere | 0.1m/s |
| Te Tika o te Whakaterenga (MAX) | 0.1m/s² |
| Tikanga Wā | 30ns |
| Te Auau Whakahōu (MAX) | 10Hz |
| Tere I2C | 400Kbps (Teitei) |
| UART Baudrate | Awhe: 9600-921600bps; Taunoa: 115200bps |
| Reiti Whakahou Raraunga GNSS | Teitei: 10Hz; Taunoa: 1Hz |
6. Papa Hototahi
Kua hangaia te kōwae LC76G mō te hototahitanga whānui, e tautoko ana i te whakaurunga ki ngā tūāpapa whanaketanga rongonui.
Pikitia: He whakaaturanga ā-kanohi o te hototahitanga o te kōwae LC76G ki ngā papa whanaketanga maha.
Ka hototahi te kōwae ki ngā tūāpapa pēnei i:
- Rahipere Pi
- Rahipere Pi Pico
- Jetson Nano
- ESP32
- Arduino
7. Hua Neke Atuview me nga Ahinga
He tirohanga ki rungaview o te kōwae LC76G me ōna āhuatanga ā-tinana.
Whakaahua: Runga view o te kōwae LC76G GNSS, e whakaatu ana i te pūihi uku.
Whakaahua: E rua ngā koki viewngā o te kōwae LC76G GNSS, e whakaatu anaasing tona hoahoa kiato.
Ahu Whakahuahua
Pikitia: He tuhi hangarau e whakaatu ana i ngā ine ā-tinana o te waeine LC76G i roto i ngā mirimita.
- Ahu: Tata ki te 30.50mm x 25.50mm x 2.25mm (kāore i te whakaurua te taura pūihi me te teitei o te hononga).
8. Tohutohu Tatūnga
Whāia ēnei mahi hei whakarite i tō LC76G Multi-GNSS Module:
- Tuku Hiko: Honoa te pine VCC ki tētahi pūtake hiko 3.3V, 5V rānei, ā, honoa te pine GND ki te whenua. Me whakarite kia pumau te pūtake hiko, ā, kei roto i te kaha kua tohua.tage awhe.
- Atanga Whakawhitiwhiti:
- UART: Honoa te pine TX o te kōwae ki te pine RX o tō MCU manaaki, me te pine RX o te kōwae ki te pine TX o tō MCU manaaki. Whirihorahia te UART o tō MCU manaaki ki te tere baud e hiahiatia ana (taunoa 115200bps).
- I2C: Honoa te pine SDA o te kōwae ki te pine SDA o tō MCU manaaki, me te pine SCL o te kōwae ki te pine SCL o tō MCU manaaki. Me whakarite kei te whakamahia ngā ātete kukume-ake e tika ana mēnā kāore anō kia kitea i runga i tō papa manaaki.
- Antenna: Kei roto i te kōwae he pūihi uku kua whakauruhia. Me whakarite kia mārama te kōwae view o te rangi mō te whiwhinga amiorangi tino pai. Kaua e waiho tata ki ngā mea whakarewa, ki ētahi atu pūtake pokanoa rānei.
- Hononga Kōwhiringa:
- PPS: Mena e hiahiatia ana he wā tika, honoa te pine PPS ki tētahi tāuru i runga i tō MCU manaaki.
- tuatahi: Ka taea te hono i te pine RST ki tētahi GPIO i runga i tō MCU manaaki mō ngā tautuhi anō e whakahaerehia ana e te pūmanawa.
- Hinga-Whakaoho tuatahi: Kia mau te hononga, whakamahia te hiko. Me tiaho te rama PWR. Ka kimo te rama PPS ina whiwhihia he whakatikatika GPS tika.
9. Nga Tohutohu Whakahaere
Ka whakaputahia e te kōwae LC76G ngā rerenga NMEA 0183, he paerewa ēnei mō ngā kaiwhiwhi GNSS. Kei roto i ēnei rerenga ngā mōhiohio pēnei i te whānui, te roa, te teitei, te tere, me te tūnga amiorangi.
- Pupuri Raraunga:
- UART: Pānuihia ngā raraunga mai i te pine TX o te kōwae mā te whakamahi i te kaiwhiwhi UART o tō MCU manaaki. Ka noho ngā raraunga hei rerenga kōrero NMEA.
- I2C: Whakauru atu ki ngā rēhita raraunga o te kōwae mā te atanga I2C. Tirohia te kawa whakawhitiwhiti kōrero taipitopito i roto i ngā tuhinga ipurangi mō ngā wāhitau rēhita me ngā whakatakotoranga raraunga motuhake.
- Te Tātari Rerenga NMEA: Whakatinanahia te waehere wetewete NMEA ki tō MCU manaaki hei tango raraunga whai tikanga mai i ngā rerenga kōrero kua riro mai. Ko ngā rerenga kōrero noa ko te GPGGA (Global Positioning System Fix Data), GPRMC (Recommended Minimum Specific GNSS Data), me te GPVTG (Track Made Good and Ground Speed).
- Whirihoranga: Ka taea te whirihora i te kōwae mā te whakamahi i ngā whakahau NMEA motuhake i tukuna mā te atanga UART, I2C rānei. Mā tēnei ka taea te whakarerekē i ngā tawhā pēnei i te tere whakahou, ngā whetū GNSS kua whakahohea, me ngā momo rerenga kōrero putanga. Tirohia ngā rauemi ipurangi a Waveshare mō ngā huinga whakahau taipitopito.
- Putanga 1PPS: Ka tukuna e te tohu 1PPS he pāoro tino tika kotahi i te hekona, ka tukutahitia ki te wā UTC. He mea whai hua tēnei mō ngā tono e hiahia ana ki te tukutahitanga wā tika.
- Tīmatanga Wera / Tīmatanga Mahana: Mā te pākahiko ka taea te whakahou i roto i te pūnaha ka pupuri i ngā raraunga ephemeris, ka taea ai te whakatika tere i ngā tūranga (tīmatanga mahana, wera rānei) i muri i te ngaronga hiko poto, te tīmatanga anō rānei.
Mō ngā hōtaka taipitopito exampMō ngā kōnae me ngā whare pukapuka mō ngā tūāpapa motuhake (Raspberry Pi, Arduino, me ētahi atu), tirohia ngā rauemi whanaketanga ipurangi a Waveshare mana.
10. Tiaki
Kua hangaia te LC76G Multi-GNSS Module mō te mahi pono me te iti o te tiaki. Kia mau ki ngā aratohu e whai ake nei:
- Nga Tikanga Taiao: Whakahaerehia te waeine i roto i ngā awhe pāmahana me te haumākū kua tohua. Āraia te pānga ki ngā pāmahana tino kino, te rā tika, te makuku, ngā taiao waikura rānei.
- Te whakahaere a-tinana: Kia tūpato te whakahaere i te kōwae kia kore ai e kino te tinana. Kaua e piko, e pēhi rānei i te PCB, i ngā hononga rānei.
- Te horoi: Ki te mea e tika ana, horoia mārire te waeine ki te kakahu ngohengohe, maroke. Kaua e whakamahi i ngā wai horoi, i ngā whakarewa rānei.
- Te Whakataunga Antenna: Me whakarite kia kore he arai i te pūihi kua whakauruhia view o te rangi mō te mahi tino pai. Kaua e hipokina te pūihi ki ngā mea whakarewa, kaua hoki e waiho tata ki ngā pūtake o te pokanoa hikohiko.
- Ora Pūhiko: Ka taea te whakahou i te pākahiko MS621FE o roto, ā, he mea hanga mō te roa o te ora. Mena ka tīmata makariri tonu te kōwae i muri i ngā huringa hiko poto, me utu pea te pākahiko mā te pupuri i te kōwae kia hiko mō te wā roa.
11. Te Raru
Mena ka pāngia koe e ngā raruraru me tō kōwae LC76G, whakaarohia ēnei mahi whakatau raruraru e whai ake nei:
- Kāore he rama hiko:
- Tirohia ngā hononga hiko (VCC me GND) me te whakarite kei te whakarato te pūtake hiko i te kaha tika.tage (3.3V, 5V ranei).
- Manatokohia kei te kaha te pūnaha hiko ki te whakarato i te iahiko e rawaka ana.
- Kāore he PPS LED e Kimo ana / Kāore he Whakatikatika:
- Me whakarite kia mārama, kia kore he arai o te kōwae view o te rangi. Ka taea e ngā taiao o roto, ngā wāhi rānei he whare teitei te aukati i ngā tohu amiorangi.
- Tukua he wā e tika ana mō te tīmatanga makariri (tae atu ki te 26 hēkona, neke atu rānei i ngā āhuatanga uaua).
- Tirohia mēnā he kaha te pokanoa hikohiko e tata ana.
- Me whakaū kei te hipokina, kei te pakaru rānei te pūihi.
- Kāore he Putanga Raraunga (UART/I2C):
- UART: Tirohia anō ngā hononga TX/RX (whakawhiti). Me whakarite kia ōrite te tere o te baud i runga i tō MCU manaaki ki te tere o te baud o te kōwae (taunoa 115200bps). Me manatoko kua tika te whakatinanatanga o tō waehere kaiwhiwhi UART.
- I2C: Whakaūtia te wāhitau I2C, ngā hononga SDA/SCL, me ngā ātete kukume-ake. Manatokohia tō waehere whakawhitiwhiti kōrero I2C.
- Me whakarite kei te hiko te waeine, ā, kei te kā te rama PWR.
- Raraunga Tūnga Hē:
- Me whakarite kei te pai te hononga o te kōwae ki te amiorangi (kei te kimo haere tonu te rama PPS).
- Tirohia mēnā he pokanoa maha-ara (ngā tohu e whakaata ana i ngā whare).
- Kia tino tika te whirihoranga o te kōwae ki te whakamahi i ngā whetū GNSS katoa e wātea ana.
- Kōwae Kāore i te Whakautu:
- Whakamātauria te tautuhi anō i te kōwae mā te kukume i te pine RST ki raro mō tētahi wā poto, mā te huri rānei i te mana ki te huringa hiko.
12. Pūtāhui me te Tautoko
Mō ngā mōhiohio pūtāhui, tautoko hangarau, me te urunga atu ki ngā tuhinga hou, ngā taraiwa, me ngā putanga o muaampte waehere, tirohia te paetukutuku Waveshare mana webpaetukutuku, i tā rātou whārangi hua rānei mō te LC76G Multi-GNSS Module.
Ka whakaratohia e Waveshare ngā rauemi ipurangi whānui hei āwhina i te whanaketanga me te whakaurunga. Kei roto i ēnei rauemi:
- Ngā pepa raraunga taipitopito me ngā pukapuka kaiwhakamahi.
- Exampte waehere mō ngā momo pūmana iti me ngā rorohiko papa-kotahi (hei tauira, Raspberry Pi, Arduino, ESP32).
- Tautoko ā-whare wānanga, ā-hapori rānei.
Ko ngā mōhiohio whakapā mō te tautoko hangarau ka kitea i runga i te Waveshare webpae.
