User Tools

Site Tools


en_alt:receivers

Differences

This shows you the differences between two versions of the page.

Link to this comparison view

Both sides previous revisionPrevious revision
en_alt:receivers [2026/10/12 14:55] – Add the LTE modem uplink variant (firmware PR #30) hajoen_alt:receivers [2026/10/12 15:04] (current) – LTE modem: name the module variant, unify the breakout name hajo
Line 236: Line 236:
 ==== LTE modem ==== ==== LTE modem ====
  
-For a spot with no Ethernet and no Wi-Fi at all: a mast in a field, a rooftop without a cable run, a vehicle. Instead of bridging to somebody else's network, the receiver brings its own — a **SIMCom A7670E** cellular modem on a BKP-A7670 breakout, connected over UART and speaking PPP. No second ESP32, no router, nothing but power and a SIM.+For a spot with no Ethernet and no Wi-Fi at all: a mast in a field, a rooftop without a cable run, a vehicle. Instead of bridging to somebody else's network, the receiver brings its own — a **SIMCom A7670E** cellular modem on the AND BKP-A7670E breakout, connected over UART and speaking PPP. 
 + 
 +**Watch out when buying:** it comes in regional and feature variants that differ in the LTE bands and in whether GNSS is fitted — this one is an **A7670E-MASA**, European bands with GNSS.
  
 Wiring is three jumper wires and no soldering if the breakout's header is populated; the board's TXD and RXD are 3.3 V TTL, so no level shifter is needed either: Wiring is three jumper wires and no soldering if the breakout's header is populated; the board's TXD and RXD are 3.3 V TTL, so no level shifter is needed either:
Line 244: Line 246:
 | ''GND'' | → | ''G'' | | ''GND'' | → | ''G'' |
  
-{{:esp32-c5-a7670e-lte.jpg?0x420|A SIMCom A7670E on a BKP-A7670 breakout, wired to an ESP32-C5 board with three jumper wires}} \\+{{:esp32-c5-a7670e-lte.jpg?0x420|A SIMCom A7670E on the AND BKP-A7670E breakout, wired to an ESP32-C5 board with three jumper wires}} \\
 //Three jumper wires link the modem breakout to the ESP32-C5; the orange cable is the modem's own USB power supply. Note the three antennas that have to share the space: LTE (flat patch, left), GNSS (square ceramic, top right) and the receiver's own 5.9 GHz antenna (white, right).// //Three jumper wires link the modem breakout to the ESP32-C5; the orange cable is the modem's own USB power supply. Note the three antennas that have to share the space: LTE (flat patch, left), GNSS (square ceramic, top right) and the receiver's own 5.9 GHz antenna (white, right).//
  
Line 262: Line 264:
 //Not in a release yet: this is [[https://codeberg.org/opentrafficmap/its-g5-receiver-firmware/pulls/30|pull request #30]], which builds on [[https://codeberg.org/opentrafficmap/its-g5-receiver-firmware/pulls/29|#29]]. For now you build it from the branch.// //Not in a release yet: this is [[https://codeberg.org/opentrafficmap/its-g5-receiver-firmware/pulls/30|pull request #30]], which builds on [[https://codeberg.org/opentrafficmap/its-g5-receiver-firmware/pulls/29|#29]]. For now you build it from the branch.//
  
-^ Hardware | an ESP32-C5 board, a SIMCom A7670E on a BKP-A7670 breakout, a SIM card, and a separate 5 V / 2 A supply for the modem |+^ Hardware | an ESP32-C5 board, a SIMCom A7670E-MASA on the AND BKP-A7670E breakout, a SIM card, and a separate 5 V / 2 A supply for the modem |
 ^ Firmware | official firmware with ''sdkconfig.proto-lte-a7670'' — currently only in pull request #30 | ^ Firmware | official firmware with ''sdkconfig.proto-lte-a7670'' — currently only in pull request #30 |
 ^ Uplink | LTE, PPP over UART | ^ Uplink | LTE, PPP over UART |
en_alt/receivers.1791809744.txt.gz · Last modified: by hajo