At a glance
Combine Brainboards with Power-5 or Power-7 boards into any size stack
8 × data outputs with ESD + over-voltage protection
ESP32 · 16MB flash (no PSRAM) · Ethernet + WiFi 2.4GHz
Pairs with any Dig-Octa Powerboard, including existing ones
New V4 DC-DC converter fixes the 24V issue; 24V-48V supported when used with the Dig-Octa Power-5HV board
Dedicated 5V relay trigger (load switch), pigtail included
NEWLatest V4 revision: the newest and best QuinLED Dig-Octa Brainboard-32-8L yet
V4 is a completely reworked board with a new DC-DC converter that fixes the 24V issue found on earlier revisions. 48V is now supported when paired with the Dig-Octa Power-5HV board (5V-24V standard). Here's what's new compared to V3.5 (the current Brainboard):
- Completely reworked board — V4 revision 1 (v4r1), now on a 6-layer PCB, introduced 2026-10-31
- New DC-DC converter design — Fixes the 24V issue; 5V-24V, or 24V-48V with a Power-5HV
- New QEXP port — Includes a cable to female Dupont for wiring up accessories
- New relay port and circuit — Load-switch (still 5V trigger out), smaller port with included pigtail cable
- Reworked level-shifters — ESD and over-voltage protection; no more resistor switcher, tuned for similar-to-33Ω performance
- Top-board extension header — Ready for future top boards (e.g. doubled outputs, Diff-Solo/Diff-Adv, DMX); fully stacking and stacking-power compatible
- New I2C port — Stemma QT / JST SH 1.0mm
- Updated Ethernet — Socket lip points up; Ethernet power jumper removed (SD card jumper remains)
- Onboard digital PDM microphone — With a jumper to disable it electrically
- New GPIO layout — LED1-8 work together with I2C and the digital mic; some GPIOs shared with the SD card slot, see pinout guide
Board specifications
- ESP32 · 16MB flash (no PSRAM)
- Ethernet + WiFi 2.4GHz
- SD card reader
- Stemma QT / JST SH 1.0mm I2C port
- Dedicated relay output socket with included pigtail
- Boot/Reset buttons available
- Pairs with any Dig-Octa Powerboard, including existing ones
LED features
- 8x level-shifted LED data output channels
- Each channel level-shifted individually, so one failing channel doesn't affect the others
- All terminals pluggable to simplify management when stacked
- Reworked level-shifters with ESD and over-voltage protection, no resistor switcher needed (similar to 33Ω performance)
Special features
- Pairs with any Dig-Octa Powerboard, including existing ones
- New DC-DC converter: 5V-24V input standard; 24V-48V supported when used with the Dig-Octa Power-5HV board
- Onboard digital PDM microphone (with disable jumper), QEXP port and top-board extension header
- Load-switch relay circuit with included pigtail cable
Videos on the Dig-Octa System
Guides & tutorials
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Power supply
We always suggest Meanwell power supplies — very reliable, and they actually give you the power they state.
Mean Well LRS Series 350W — 12V & 24V
Skip Amazon and the border altogether — we stock both the 12V (LRS-350-12) and 24V (LRS-350-24) versions and ship them fast, right from here in Canada. Same genuine Meanwell quality, no import hassle. Choose your voltage on the product page.
🛒 Buy Direct — $54.99 CADNeed a different wattage? Other Meanwell LRS models, available on Amazon:
Misc. accessories
We sell a variety of accessories to help with your install and make water-tight connections.
Split Braided Loom
Self-closing braided loom for tidy, protected cable runs. Available in multiple sizes.
Shop Split Loom
Adhesive Lined Heat Shrink
Dual-wall, adhesive-lined heat shrink for water-tight connections. Available in multiple sizes.
Shop Heat Shrink
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