Magnethead494
Well-known member
I designed the PCBs for my project around the 2.0, which i'm aware is going away (sooner than I thought). It's interfacing an ADS1115 and a 3rd-party 5-volt UART device.
I am only using 6 pins on the 2.0: Vcc, Gnd, TX1, RX1, SDA, SCL
The UART header only has TX, RX, and Ground
The ADS1115 has VCC, Gnd, SDA, SCL
To swap the LC into the same footprint, I need to know what to change.
RX/TX2 are in the same place as RX/TX on the 2.0, so I think i'm okay there. But what do I need to change for the voltage issue?
SDA/SCL are across the board. I can simply not solder in the RX/TX3 pins and solder in wire jumpers, but what do I need to change for the voltage issue? The major issue is that the ADS1115 is reading in 0-5 analog signals from 3rd party devices, so I can't drop it to 3v3 VCC levels.
What's my best options? What can I add if I make a PCB revision to solve the voltage issues?
Teensy is USB powered, so Vcc is Vusb
I am only using 6 pins on the 2.0: Vcc, Gnd, TX1, RX1, SDA, SCL
The UART header only has TX, RX, and Ground
The ADS1115 has VCC, Gnd, SDA, SCL
To swap the LC into the same footprint, I need to know what to change.
RX/TX2 are in the same place as RX/TX on the 2.0, so I think i'm okay there. But what do I need to change for the voltage issue?
SDA/SCL are across the board. I can simply not solder in the RX/TX3 pins and solder in wire jumpers, but what do I need to change for the voltage issue? The major issue is that the ADS1115 is reading in 0-5 analog signals from 3rd party devices, so I can't drop it to 3v3 VCC levels.
What's my best options? What can I add if I make a PCB revision to solve the voltage issues?
Teensy is USB powered, so Vcc is Vusb
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