After installing the Meshtastic firmware, the HT CT-62 does not start and does not appear on the cell phone’s Bluetooth. Does anyone know what might be happening?
HT CT-62 won't start after installing Meshtastic firmware
Lots of info missing here for us to be able to help in any way! What did you solder the CT62 onto? How is it powered? How did you infer that the CT62 “does not start”?
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Serial logs, formatted with the </> tool are usually quite informative.
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It is not showing anything on the serial console. It is not starting, I tried to install Tasmota, it also completes the installation but does not start. Is there any minimum configuration (put it down or up, any GPIO) for it to start or is it just necessary to power it on VCC ?
These are important to know.
Plus how did you flash the board - web flasher or VSCode/PIO/Git repro?
We (me and the brains of the operation, @bns) have a board that provides USB & Serial interfaces and breaks the pins out. We are Team LoRaWAN so haven’t tried Meshtastic on it yet. If you can give feedback on the above first, I can see what can be done to try it here.
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What did you solder the CT62 onto?
I soldered a wire to TX, RX, GPIO 9, EN to flash the Meshtastic 2.6.4.b89355f Beta firmware and connected it to a proto board and installed the Meshtastic firmware. After the installation was complete, I removed the EN and GPIO 9 connections and turned on the power. After that, the MCU did not start, nothing appears on the serial console and the device does not appear on the cell phone’s Bluetooth.
How is it powered?
It is powered through the same USB to TTL adapter (USB to TTL FT23RL) that I used to install the firmware.
How did you infer that the CT62 “does not start”?
After the installation was complete, the MCU did not start, nothing appears on the serial console and the device does not appear on the cell phone’s Bluetooth.
Should I pull up or down any GPIOs with resistors to make the MCU start? If so, which GPIOs and resistors should I use to make the MCU start?
I’ve already tried pulling up EN and GPIO 9 with 10K resistors and on 3V3 and it didn’t work.
I also installed the Tasmota firmware on the MCU and after the installation was complete it also didn’t start.
I would like to thank you in advance for your help.
Some projects with this MCU and the meshtastic firmware
At the end of this last project they say minimum set up and they say this
“Minimum setup: CT62, R1, R2, (R7, R8, type-c connector), C2, C3, LDO, (Tantal capasitor), short wire SB1, SB2, SB3”
There is a quote option in Discourse - highlight text and an option will come up.
That would put it in to flash mode. Try JUST the Enable pin, only that pin!
Third party implementations are always a good source of info - both show the EN pin pulled high.
But NOTHING can ever replace the vendors docs - Heltec has a reference design for this module - how to wire it up - and Espressif data sheets.
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