We received some emails asking if we could offer the boards and the parts for purchasing … so we did it. We have to admit that it took us some time to arrange everything but some of the circumstances were beyond our control.
We have put up for sale very small batch of those starter kits as we don’t know what the interest will be. Please note that at the moment we don’t do this as a business and we do not make any profit – the sale only covers our expenses.
IMPORTANT: This is offered as a kit which means that you have to assemble it yourself.
We chose Storenvy for our shopping site and we think that it was a good choice – it’s easy to setup and use but also provides all the functionality that we need at this stage. You can pay for your orders with PayPal.
We have a shield-like proto board now, very preliminary design. It will allow you to solder some components on it and then put it on top of the Tinusaur Board – very much like any other shield-like board. It is available on OSHPark at this address: https://oshpark.com/shared_projects/2zuAJJGZ.
All the parts for the Tinusaur Starter kit were ordered from our suppliers. We hope everything to be in our office (most of them already arrived) by the end of the month. Will post more information about it here and on our Twitter/Facebook/etc.
To start making things with the Tinusaur you need the board, the parts, a programmer with a cable and couple of LEDs to make your first blinking lights program for ATtiny85 microcontroller.
We’re ordering the PCBs and the parts from the manufacturers and it seems that the total cost for the full package will be 8 to 9 USD. Once we have everything here we’ll run a small test sale to see what’s the interest in the kit. The estimated cost for delivery of the kit to any country in the world is about 2 USD. So the total cost to get it would be 10 to 11 USD – very affordable for everyone.
Here is a list of everything that will be included in the Tinusaur Starter:
In this post are discussed some of principals used while designing this board.
Size and form factor
The goal of making this board is not to have a smaller or the smallest PCB that runs on ATtiny. The goal is to have a board that could be used for prototyping simple projects as well as fitting reasonable small (or large, depending on the view) circuits on an additional shield board.
There are 2 header – one 2×4 – H1 and another one 2×5 – H2.
The idea is that all the outer pins are GND while all the inner pins are connected directly to the MCU. The longer header H2 has its top-left pin connected to the Vcc like the 2nd-row one on the left. That gives us one more power source wire.
This board could work with the smaller Atmel AVR ATtiny controllers such as ATtiny 25/45/85, ATtiny13 as well as most of their variations – as long as they are in DIP-8 case.
The programming is done through the standard 10-pin ISP connector using any compatible AVR ISP programmer. On the diagram below it is marked as PC.
The connector is placed on the board in such a way so it could be chopped off if not needed and make the board little smaller. The programming probe, marked as PP on the diagram below, has holes that could help in the cutting. In case you need to connect the board to a programmer again at later time you can solder some wires to what’s left of the probe.
Technical parameters: 2 layer board of 0.90×1.40 inches (22.96×35.66 mm).
There are 4 mounting holes marked as MH on the diagram below.
During the development the board could be powered through the ISP programmer.
External power source could be connected to the board through a jumper marked as PS on the diagram below.
There is an optional button-cell battery mount on the back of the board, marked as BM on the diagram below. The battery could be switched on and off using the jumper that is marked as BS on the diagram.
There are 4 areas that a Tinusaur board could be divided to: A1, A2, A3, A4. That is applicable for the actual Tinusaur main board as well as any shield boards one could produce.
A1, the bottom part of the board:
this is the area where the RESET button is placed on the main board.
for a shield board that area could be used to put some components and produce a simple circuit.
A2, the mid of the board – heads:
there are 2 header – one 2×4 and another one 2×5, they are different for a reason.
on the main board, between the headers, is placed the MCU.
on a shield board, between the headers, could placed a 8-pin chip or other components.
A3, the top part of the board:
there are the minimum required components for the MSU to work – 2 capacitors for the power source and one pull-up resistor for the RESET.
Briefly, the Tinusaur is a minimal micro-controller hardware configuration based on Atmel AVR ATtiny family of products and more specifically those with DIP-8 case such as ATtiny25/ATtiny45/ATtiny85, ATtiny13 as well as their variations.
The goal of the Tinusaur project is to have a simple, cheap and accessible quick-start platform for everyone interested in learning and creating things.