Open
Conversation
It's still the same PCB
Still the same PCB
Updated Diode and NMOS to support 1A max. Fixed valve state LED to draw from BATT instead of MCU.
First pass at flight design
Updated PT3 to use valid ADC pin
@StarlightDescender if there is an ED in this section is there any reason not to priority power or to the 12V line and only draw from lipo once the ED disconnects
Nit should add datasheet links for each schematic component. Makes reviewing easier
Should be 10k
any reason these need to be 10u, standard value is 0.1u
you can flip the chip symbol along y to have gnd point down and 3v3 up.
The TC+ and TC- are flipped.
|
There are only 3 Batt out lines for a total 6 pts. Is the plan to only be using 3 at a time?
|
you have some nets which are not connected currently (gnds on chip and components and oscillator)
should gnd the T- lead
also allows detection of when thermocouple is not connected.
|
This trace is way to small for the main power in to the board (0.2mm only good for less than 1A)
This is the main switching trace for the buck, it should be made as wide and short as possible to reduce the equivalent inductance of the trace.
your main loops for main power in (black) and the vout (yellow) which is gonna make it easier for noise to couple onto the buck.
Aim to try to reduce the net area of the current out and returning to the chip to be more optimal.
The suggested layout from TI is a good place to start.
|
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
2 participants
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
Updating PCB of Theseus to reduce footprint and remove non-flight sensors.
Current sensors able to be read:
2x Hall sensors
3x Current (4-20mA) PTs
3x Voltage (0-5V) PTs
1x Thermocouple
2 12V solenoid actuation lines also present, plus microSD card and flash memory chip