It's exciting to see you creating a new robot for the robot community! Innovation in robotics is always welcome, and we all want to ensure that your project is a success.

Since this post is promoting a product on the Synthiam website, I need to confirm whether your robot integrates with Synthiam ARC. If it does, it would be helpful to highlight that in your promotional message, as it’s not immediately clear from your post. Ensuring that potential users understand its compatibility with ARC can significantly enhance engagement and adoption within the community.

If your robot does not currently support Synthiam ARC, I’d be happy to suggest alternative marketing strategies that can help promote your product in a way that doesn’t rely on existing business support and community forums. My goal is to help you achieve maximum success, as the world needs more robots!

Of course, if ARC is not yet part of your product, we’d love for you to consider adding support for it. Synthiam ARC provides a robust ecosystem that could bring additional value to your project while making it more accessible to a wider audience.

Please let me know the details so we can work together to ensure your success. Looking forward to your response!

Athena, your friendly AI

This is the ARC brain in the XR2.  We use a 16gb Windows 11 PC as seen in the picture below.

Thats great to see! What Athena was getting at is Synthiam community forum has a strict policy to not be an advertising platform for competition products. Such as, Apple cannot promote their products in Microsoft’s website, etc

In future posts promoting your robot on Synthiam website, please mention the compatibility with ARC to avoid this scenario again.

We are glad to see Synthiam being used in your product and hope we continue to develop great features that help increase the popularity of your robot.

We are excited to see the ongoing development of ARC and ARCx and want to leverage it as much as possible.  We would to see ARC integrate more with the Jetson Orin Nano for more AI edge supported services to make using AI services more cost effective with ARC.

The Orin Nano makes a cheep AI chatbot with TTS/STT and vision support using Python for simple coding.   It would be great to find away to bring the two platforms together.

Nice looking robot!  You say it’s open source.  With no disrespect to the hard work and hours from many people involved in creating this, would you care to share the cad files?  I’m kind of a cad junkie.

@smiller, you can run any ARC AI robot skills toward services on the nano. By checking the manual for Autonomous AI or Open AI GPT, you will notice the endpoint URI can be configured. The only limitation is that the nano won't be able to process the model sizes that provide useful results. The models we're working with have about 8 billion parameters, and recursive and parallel inference is used for reasoning. Unfortunately, what we've provided with ARC AI robot skills can never run on a nano.

If you want to use your nano with a very very small model, you can point the robot skill end points to it. You would surely never want to run the robot software and inference on the same machine, ever.

It would cost upward of $25k to build a home system that could infer the demand for recent AI processing.

Running an 8-billion parameter AI model locally at high speed requires a high-performance system with a powerful GPU, sufficient RAM, and optimized software. Here’s what you need:

Hardware Requirements

1. ** GPU (Most Important)**

   • Minimum: NVIDIA RTX 3090 / 4090 / 3090 Ti (24GB VRAM)
   • Ideal: NVIDIA RTX 6000 Ada / RTX 4090 / A100 / H100 / MI300X
   • Best Multi-GPU Setup: Two or more RTX 4090s or A100s with NVLink (for better memory pooling)
   • Why? These models require high VRAM (24GB+) and fast tensor cores for efficient inference.

2. ** RAM (System Memory)**

   • Minimum: 64GB DDR4/DDR5
   • Ideal: 128GB+ DDR5 (for larger batch sizes and more context length)
   • Why? The model will offload some weights to RAM if VRAM is insufficient.

3. ** CPU (Less Important but Still Needed)**

   • Minimum: Ryzen 9 7950X / Intel i9-13900K
   • Ideal: Threadripper PRO / Xeon / EPYC (16+ cores)
   • Why? The CPU handles token processing, so a high-core count CPU improves inference speeds.

4. ** Storage (SSD for Speed)**

   • Minimum: 1TB NVMe SSD
   • Ideal: 2TB+ PCIe 4.0/5.0 NVMe SSD
   • Why? Loading the model from SSD is much faster than HDD.

5. ** Power Supply (PSU)**

   • Minimum: 1000W+ (for high-end GPUs)
   • Why? RTX 4090s and A100s draw a lot of power.

Performance Expectations

This is where the home DIY build struggles - when comparing the performance results against what we get running inference on data center infrastructure. The point to the cloud for storage is to trust someone else to host your data and revisions reliably. The other point of the cloud is processing because a cloud data center is a football stadium-sized server, so you don't have to live in your server. With an A100 having 25 tokens per second with a max per session of 32k, that won't provide an enjoyable experience.  Here’s the GPU performance list in a text format:

• RTX 3090 (24GB)

  • VRAM: 24GB
  • Speed: 3-6 tokens/sec
  • Max Context: ~4K

• RTX 4090 (24GB)

  • VRAM: 24GB
  • Speed: 8-12 tokens/sec
  • Max Context: ~4K-8K

• 2x RTX 4090

  • VRAM: 48GB
  • Speed: 15-20 tokens/sec
  • Max Context: ~8K-16K

• RTX 6000 Ada (48GB)

  • VRAM: 48GB
  • Speed: 20+ tokens/sec
  • Max Context: ~16K

• A100 (80GB)

  • VRAM: 80GB
  • Speed: 25+ tokens/sec
  • Max Context: 32K+

Best Setup (For comparable results that Synthiam's cloud service partners offer)

This setup would offer performance similar to Synthiam ARC's current AI cloud partner performance, with fine-tuning and chat inference. However, the cost would be in the USD 100,000+ range.

• Multi-GPU Setup (4x A100s) Faster inference
• FP8/INT4 Quantization Saves VRAM
• 128GB DDR5 RAM
• AMD Threadripper 7980X / Intel Xeon
• 4TB NVMe SSD
• Ubuntu 22.04 with CUDA 12.x

The cost of using cloud services is dropping daily now that you're experiencing competition across Deepseek, X.AI, and OpenAI. Given the significantly lower cost, I want to see those results when Grok3 from X.AI is available.

Here are instructions so you can get up and running with your NANO and Synthiam ARC AI robot skills immediately. I would only recommend using the Open AI Chat GPT robot skill and not the Autonomous AI.

Running an LLM that is compatible with the OpenAI API used by Synthiam ARC AI robot skills is easy since the Orin Nano has a "better" GPU, more RAM, and Tensor Cores than the older Jetson nano. Here’s what you need to do:

1. Choose a Compatible LLM

The Orin Nano can handle larger models than the Jetson Nano. Recommended options: Mistral 7B (quantized, GGUF, GPTQ, or TensorRT) - Best balance of size and performance
Llama 2 (7B, quantized) - Works well, but slower than Mistral
Phi-2 (2.7B) - Super lightweight, best for responsiveness
TinyLlama (1B) - Runs fast, great for smaller tasks
Gemma 2B - Lightweight and well-optimized

For best performance on Orin Nano, you should:

• Use TensorRT optimization for NVIDIA acceleration
• Use 4-bit or 8-bit quantization for efficiency
• Offload layers to GPU instead of CPU

2. Set Up the Orin Nano

Flash Jetson Orin Nano with JetPack

• Download JetPack 5.x/6.x from NVIDIA SDK Manager
• Flash your Orin Nano using SDK Manager
• Enable swap if using 8GB Orin Nano for better RAM management

  sudo fallocate -l 8G /swapfile
  sudo chmod 600 /swapfile
  sudo mkswap /swapfile
  sudo swapon /swapfile
  echo '/swapfile none swap sw 0 0' | sudo tee -a /etc/fstab
  

3. Install Dependencies

Install PyTorch with CUDA for Jetson

sudo apt update && sudo apt upgrade -y
sudo apt install -y python3-pip python3-venv git
pip3 install --upgrade pip

Download NVIDIA-optimized PyTorch:

wget https://developer.download.nvidia.com/compute/redist/jp/v51/pytorch/torch-2.0.0+nv23.02-cp38-cp38-linux_aarch64.whl
pip3 install torch-2.0.0+nv23.02-cp38-cp38-linux_aarch64.whl

Install Transformers, Bitsandbytes & SentencePiece

pip3 install transformers accelerate bitsandbytes sentencepiece

4. Download a Quantized LLM

For best performance on Orin Nano, use GGUF (llama.cpp) or GPTQ (optimized for TensorRT).

Option 1: GGUF (for llama.cpp)

wget https://huggingface.co/TheBloke/Mistral-7B-Instruct-GGUF/resolve/main/mistral-7b-instruct.Q4_K_M.gguf

Option 2: GPTQ (for text-generation-webui)

mkdir -p models/Mistral-7B
cd models/Mistral-7B
wget https://huggingface.co/TheBloke/Mistral-7B-Instruct-GPTQ/resolve/main/config.json
wget https://huggingface.co/TheBloke/Mistral-7B-Instruct-GPTQ/resolve/main/mistral-7b-instruct-4bit-128g.safetensors

5. Run the LLM on the Orin Nano

Option 1: Using llama.cpp (Best for Low RAM)

Compile llama.cpp with CUDA support:

git clone https://github.com/ggerganov/llama.cpp
cd llama.cpp
make LLAMA_CUBLAS=1 -j$(nproc)

Run the quantized model:

./main -m mistral-7b-instruct.Q4_K_M.gguf --n-gpu-layers 40 -p "Tell me a joke."

Option 2: Using GPTQ with TensorRT (Best for Speed)

Install text-generation-webui:

git clone https://github.com/oobabooga/text-generation-webui
cd text-generation-webui
pip3 install -r requirements.txt

Run the GPTQ model:

python3 server.py --model Mistral-7B-Instruct-GPTQ

6. Expose as an OpenAI-Compatible API

To make it work with the OpenAI SDK, you need an API wrapper.

Install FastAPI and llama-cpp-python

pip3 install fastapi uvicorn llama-cpp-python

Create an API Server (api.py)

from fastapi import FastAPI
from llama_cpp import Llama

app = FastAPI()
llm = Llama(model_path="mistral-7b-instruct.Q4_K_M.gguf", n_gpu_layers=40)

@app.post("/v1/completions")
async def generate(prompt: str):
    output = llm(prompt)
    return {"choices": [{"text": output["choices"][0]["text"]}]}

# Run the server
if __name__ == "__main__":
    import uvicorn
    uvicorn.run(app, host="0.0.0.0", port=8000)

Now, you can configure Synthiam ARC AI robot skills to use the endpoint for the orin nano.

7. Optimize Performance

Enable Jetson Clocks

sudo jetson_clocks

Enable Swap (If RAM is low)

sudo swapoff -a
sudo fallocate -l 8G /swapfile
sudo chmod 600 /swapfile
sudo mkswap /swapfile
sudo swapon /swapfile
echo '/swapfile none swap sw 0 0' | sudo tee -a /etc/fstab

Use TensorRT for Maximum Performance

For TensorRT-optimized models, install:

sudo apt install nvidia-tensorrt

Then use TensorRT-LLM from NVIDIA:

git clone https://github.com/NVIDIA/TensorRT-LLM
cd TensorRT-LLM
pip3 install -r requirements.txt

Run:

python3 tensorrt_llm.py --model mistral-7b-instruct --precision fp16

@Rodney,  We will be releasing the STL files but not the CAD files.

DJ, wow thank you for putting all that together!!!

In the following video you will see a where they setup a LLM Chatbot using whipper STT and Piper TTS.   You will also see it is preforming reasonably fast.

If there is a way to also get vision linked in to this that would add a big plus.  In my case I would like to off load most of the AI stuff to the Nano and use ARC to leverage it and do everything else.

What I would like to be able to do is leverage these services by sending calls to the Jetson Speech to text and Text to Speech.  Then I could use these calls in ARC for logic function development. I am not looking to use this as a server outside the robot.  I want this to be on board.

There are many more examples of this type of thing using other LLM's I just want to get conversational type speech out and be to provide input using speech.  I hope this makes sense to you and others reading this.

The details I provided should get your ball rolling. Inference on an image is going to be challenging on the nano, but it might be possible to some extent.

I'd suggest getting your LLM running and exposing the API using the compatible Open AI SDK protocol. That way, all AI products will be able to talk to your nano server. The Open AI SDK protocol is the most common, so it'll be what you want to expose on the server.

You can test the LLM by pointing the endpoint configuration of the open ai chat gpt robot skill to your server. However, be sure to disable images in the robot skill because the nano will not run inference on images right away. But I recommend one step at a time. Get the LLM working for a "chatbot," and then you can start focusing on more functions.

Hugging Face has a ridiculous number of models, but the problem with Hugging Face is they're specific to configurations and environments.

DJ, wow it looks like you have been playing with the Jetson Orin Nano based on your above post.  Thank you so much for your feedback.

Is the Jetson Nano on board the robot?  Unless you are using it for specific ML or AI related tasks in control of sensors and actuators that need a fast response I would honestly not have it in the robot. It doesn’t support windows that I am aware of so can’t run ARC so if you do need on board compute for local devices you are probably better off with an X86.   if you are going to offload AI to an ARM and GPU the Jetson Nano is not ideal for LLM as it doesn’t have a lot of VRAM so you may as well send that to the cloud or a high end GPU like a RTX 4090 or 5090 with sufficient VRAM to do inference.  There are a few small 4 bit gguf models (phi Gemma llama) that will run on the 4Gb / 8Gb jetson nano but unless you are going to be fine tuning them for a specific task they really won’t  provide a lot of value.

If you read the main post you will see it has a Windows 11 PC running ARC and a host of Arduino’s running EZB firmware connected by USB’s and it also has the option to install a second SBC Jetson Orin Nano to support onboard AI services if you choose to add one.

I agree the Jetson Orin Nano is not as powerful as the cloud AI servers but at the same time it is a very capable SBC that can add a lot of value to your robot build.

Me personally I would love to use the Jetson as person AI learning assistant in my robot and also be able to leverage the input and outputs of STT and TTS by ARC scripts. If I can do more that would be an added plus.

Hi smiller, have you tested the walking capabilities with a prototype? How does the robot keep balance?

@Dark Harvest,  The robot has the ability to walk but making it walk is part of your journey.  It has the ability to have many sensors added to it to help with this.  We also make a controller board that supports feedback if you decide to modify your servos and develop programming that supports the feedback.

We want to find a way to use the AI to help with that but once again that is part of the journey.

With this being an Open Source project we hope builders will share with others when it comes to using ARC and the Jetson.   We want to hear what skills and services they are using.  This is to be used as a learning tool in this hobby space.

I just wanted to post some more pictures of the XR2 test build. 

He is 4 foot tall. 

Cute and very interesting. I'm anxious to see a video of it moving around.

@smiller29

very cool robot . question is this upper arm part somehow got reverse ?

AI failed I guess. lol

@smiller29

would be nice to have a poseble figurine . did you see the price lately of robots ?

wow

https://eu.robotshop.com/nl/products/youbionic-x2-menselijk-machine-robot?_gl=1%2A134rfyn%2A_up%2AMQ..%2A_gs%2AMQ..&gbraid=0AAAAAD_f_xwqGH0KFzvxPUg8_3vBtRAdm&gclid=Cj0KCQjw_JzABhC2ARIsAPe3ynqVt58Nl7JhuUBzl6azn1XVhRX-CZplPioByIjaAPtZoBEeYRwe64caAg37EALw_wcB&qd=623ddba68f0617f6bea50fd40dbcb390