Issues

Controller A rev B: an MCU with at least 1 MB of dual-bank flash

origin89hq/hardware#57 · opened

on Sep 25, 2026

Controller A rev B: close the pre-order bench items before the boards are ordered

origin89hq/hardware#56 · opened

on Sep 20, 2026

1

Generator board B: consider a hardware AUTO/OFF/MANUAL switch now that the selector leaves controller A

origin89hq/hardware#55 · opened

on Sep 20, 2026

1

Receive the circuit reasoning of origin89's CONTROLLER-V1.md, which this repository cites as the reasoning behind the circuits

origin89hq/hardware#50 · opened

on Sep 18, 2026

validate_silkscreen.py proves a label exists, not that it sits at its connector

origin89hq/hardware#49 · opened

on Sep 18, 2026

· Controller A rev B

Controller A rev A: CN9 pin 1 feeds board B from raw V12 with no current limit, as CN13 does in #24

origin89hq/hardware#47 · opened

on Sep 18, 2026

· Controller A rev B

Controller A rev B: an accessory bus and 12 V output, and how a millivolt gas heater would be controlled

origin89hq/hardware#46 · opened

on Sep 18, 2026

· Controller A rev B

Generator B rev B: route the relay chains through the commons, not NC to NO

origin89hq/hardware#44 · opened

on Sep 17, 2026

· Generator B rev B

Controller A rev A: D1 and D7 protection ratings are not confirmed by maker datasheets

origin89hq/hardware#42 · opened

on Sep 17, 2026

· Controller A rev B

Blender scene: the filed 2026-09-09 STEP imports stacked connector models at the board centre

origin89hq/hardware#38 · opened

on Sep 16, 2026

Controller A rev A: CN13 leaves about 9 V for a 4–20 mA tank sender, under common transmitters’ 11–12 V minimum

origin89hq/hardware#36 · opened

on Sep 15, 2026

· Controller A rev B

Controller A rev B: the indicator LEDs are far brighter than needed

origin89hq/hardware#35 · opened

on Sep 15, 2026

· Controller A rev B

Controller A rev B: supply 5 V on one RS-485 port for meters with a powered interface (PZEM-017)

origin89hq/hardware#34 · opened

on Sep 15, 2026

· Controller A rev B

1

Controller A rev A: the STM32 VDD and VREF+ pins have no 100 nF capacitor close to them

origin89hq/hardware#32 · opened

on Sep 15, 2026

· Controller A rev B

Controller A rev A: selector and 1-Wire data inputs reach STM32 pins with no clamp below their 7.3 V limit

origin89hq/hardware#31 · opened

on Sep 15, 2026

· Controller A rev B

1

Controller A rev A: on an empty flash the STM32 bootloader pulls RUN up and drives KICK, which can close board B relays

origin89hq/hardware#30 · opened

on Sep 15, 2026

· Controller A rev B

1

Controller A rev A: NRST is not on the debug header, so a probe cannot connect under reset

origin89hq/hardware#29 · opened

on Sep 15, 2026

· Controller A rev B

Controller A rev A: during an STM32 reset the RS-485 transceivers’ DI inputs float and can drive the buses

origin89hq/hardware#28 · opened

on Sep 15, 2026

· Controller A rev B

2

Controller A rev A: VE.Direct ports listen on the consumer TX pin, take 5 V directly, and have no isolation

origin89hq/hardware#27 · opened

on Sep 15, 2026

· Controller A rev B

Controller A rev A: RS-485 idle bias leaves a thin margin, and none with three terminators on the bus

origin89hq/hardware#26 · opened

on Sep 15, 2026

· Controller A rev B

Controller A rev A: a shorted 1-Wire supply can pull down the 3.3 V rail before F2 trips

origin89hq/hardware#25 · opened

on Sep 15, 2026

· Controller A rev B

Controller A rev A: the tank input CN13 has no protection, an unfused 12 V pin, and a plug that fits the logic connectors

origin89hq/hardware#24 · opened

on Sep 15, 2026

· Controller A rev B

Generator B rev A: the RUN and KICK TVS diodes cannot protect U2 or Q2 without series resistance

origin89hq/hardware#23 · opened

on Sep 15, 2026

· Generator B rev B

Generator B rev A: the watchdog timing resistor R3 is at the 74HC123 1 MΩ maximum, so leakage lengthens the timeout

origin89hq/hardware#22 · opened

on Sep 15, 2026

· Generator B rev B

1

Generator B rev A: relay coils run straight from the bank and can exceed the G5V-2-DC12 14.4 V maximum

origin89hq/hardware#21 · opened

on Sep 15, 2026

· Generator B rev B

2

Navigation Menu

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Issues

Controller A rev B: an MCU with at least 1 MB of dual-bank flash

Controller A rev B: close the pre-order bench items before the boards are ordered

Generator board B: consider a hardware AUTO/OFF/MANUAL switch now that the selector leaves controller A

Receive the circuit reasoning of origin89's CONTROLLER-V1.md, which this repository cites as the reasoning behind the circuits

validate_silkscreen.py proves a label exists, not that it sits at its connector

Controller A rev A: CN9 pin 1 feeds board B from raw V12 with no current limit, as CN13 does in #24

Controller A rev B: an accessory bus and 12 V output, and how a millivolt gas heater would be controlled

Generator B rev B: route the relay chains through the commons, not NC to NO

Controller A rev A: D1 and D7 protection ratings are not confirmed by maker datasheets

Blender scene: the filed 2026-09-09 STEP imports stacked connector models at the board centre

Controller A rev A: CN13 leaves about 9 V for a 4–20 mA tank sender, under common transmitters’ 11–12 V minimum

Controller A rev B: the indicator LEDs are far brighter than needed

Controller A rev B: supply 5 V on one RS-485 port for meters with a powered interface (PZEM-017)

Controller A rev A: the STM32 VDD and VREF+ pins have no 100 nF capacitor close to them

Controller A rev A: selector and 1-Wire data inputs reach STM32 pins with no clamp below their 7.3 V limit

Controller A rev A: on an empty flash the STM32 bootloader pulls RUN up and drives KICK, which can close board B relays

Controller A rev A: NRST is not on the debug header, so a probe cannot connect under reset

Controller A rev A: during an STM32 reset the RS-485 transceivers’ DI inputs float and can drive the buses

Controller A rev A: VE.Direct ports listen on the consumer TX pin, take 5 V directly, and have no isolation

Controller A rev A: RS-485 idle bias leaves a thin margin, and none with three terminators on the bus

Controller A rev A: a shorted 1-Wire supply can pull down the 3.3 V rail before F2 trips

Controller A rev A: the tank input CN13 has no protection, an unfused 12 V pin, and a plug that fits the logic connectors

Generator B rev A: the RUN and KICK TVS diodes cannot protect U2 or Q2 without series resistance

Generator B rev A: the watchdog timing resistor R3 is at the 74HC123 1 MΩ maximum, so leakage lengthens the timeout

Generator B rev A: relay coils run straight from the bank and can exceed the G5V-2-DC12 14.4 V maximum