Satellite1.1 Dev Kit (DIY)
Satellite1.1 Dev Kit (DIY)
Available on backorder — Restock Jul 15, 2026
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With the Satellite1 Dev Kit, you can create your own ultra-powerful voice assistant, smart speaker, and multi-sensor all in one product — fully compatible with the Home Assistant platform.
All orders placed on Feb. 17th 2026 or later will ship with the latest Satellite1.1 design, featuring the enhancements highlighted below.
Key Features:
- Microphone Processing: High-performance microphones with an XMOS audio processing chip.
- Audio Output: Supports high-quality Snapcast multi-room music playback via the powerful 25W built-in amplifier or headphone jack.
- Controls: 4 programmable tactile buttons, including hardware mute for privacy. 360 degree addressable LED ring.
- Sensors: Monitors room temperature, humidity, luminosity, and human presence (when paired with a mmWave radar sensor). Latest iteration comes with extra LD2450 connector on bottom of Hat board.
- Radios: Built-in 2.4 GHz Wi-Fi and Bluetooth® 5 (LE). Latest iteration comes with external WiFi antenna.
- Expandable: FX23L expansion connector for future accessories.
Processor:
- ESP32-S3: Dual-core 32-bit LX7, running at 240 MHz with 512 KB SRAM, 16 MB Flash, and 8 MB PSRAM.
- Audio Processor: XMOS XU316, 16-core 32-bit RISC running at 800 MHz with 3200 MIPS, 1024 KB SRAM, and 8 MB Flash.
- RPi: Hat board can optionally be powered by Raspberry Pi with FutureProofHomes firmware (experimental)
Audio Output:
- Line-level 3.5mm Headphone Output: PCM5122
- 25W Mono Amplifier Output: TAS2780
Sensors:
- Ambient Light: LTR-303ALS
- Temperature & Humidity: AHT20
- Optional Human Presence Detection: Add your own LD2410 or LD2450 for mmWave radar human presence detection.
Power Requirements:
- Recommend 30W USB-C Power Delivery
- Maximum: Boards support up to 20V @ 5A USB-C Power Delivery
Assembly:
Firmware:
- Firmware is factory installed. Connect to Home Assistant by following steps here.
- Firmware updates arrive over-the-air (OTA) or by using our ESP Web Flasher.
- Modify the firmware by using the ESPHome Dashboard Builder.
Additional Included Components:
- USB-C Power Delivery Adapter & Cable
- WiFi Antenna & IPEX Connector Cable.
Dimensions
Dimensions
When removed from packaging:
Width: 88 mm
Length: 88 mm
Height: 10 mm
Weight
Weight
When removed from packaging:
44 g
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Great sound a quality overall
On my conference call to discuss the issues I agreed to investigate the performance and speech capture issues. The test compared V1.4 with HA Voice PE and the latter won hands down. (a total of 30 repeated tests at 1/2/3 metre distances per device).
I asked for a refund but luckily V1.5 arrived just in the nick of time. The voice capture was not distorted but instead now fully captured (not cut or parts missing). And the wake word activation more sensitive / reliable, but still not quite as good as the HA Voice PE which responds 4 metres away in another room when standing by the Sat1. I was advised that wake word training might be needed due to having a British acent and that’s on my todoist list.
This product has promise and wish the development team good luck with further improvements
Everything worked as expected, assembly was straight forward.
Works great out of the box, but it's a little lite on documentation, specifically with respect to different ways to integrate into esp home. Nothing you can't eventually figure out, but it takes some research. For those of us that want devices in every room this is too expensive. By the time you build, or buy a housing, and decent speaker you are over $100. You can get there other ways, that are quite a bit less expensive. Overall a good product.
Noted on the needing more documentation. Please feel free to reply here with what was missing or even out documentation repo in GitHub is good place to open issue: https://github.com/FutureProofHomes/Documentation
- Wake word doesn't really work well, sometimes I have to give it 4 or 5
tries even when I'm standing right next to it.
- there is no audio streaming for external wake word detection engine (already created an issue here https://github.com/FutureProofHomes/Satellite1-Hardware/discussions/50)
- no bluetooth option (I knew that before)
Given it's price those are features that I expect to work.