Today, the Nikon D70 Remote control has passed another milestone in it’s evolution. The schematic has been polished and revision A of the PCB designed ready to send to manufacture.
The main changes to the schematic are as follows:
- Addition of connection points for power (Bench power supply, Coin Cell, 2xAA battery)
- Power LED to indicate if the board is powered or not
- Added a new part for the SOT353 single AND gate component
- Grounded unused pins
And here is the final version of the revision A schematic:
The main reason for this taking a while to complete is that I have had to create new components for the single AND gate. I have also take the time to tidy up my parts library in Designspark, something which is overdue.
The number of components is small and so I will be using the iTead Studio 5cm x 5cm PCB production service. At the time of writing this is coming in at $9.99 for 10 boards. And here is the board:
And in 3D:
Bill of Materials
For this board I am intending to use two suppliers:
Bitsbox are a fantastic small business and are fantastic value for discrete parts but I have elected to use some surface mount components and for these I will have to use RS Components. The bill of materials (excluding the board) is:
|Part||Value||Size||Quantity||Supplier||Part Number||Unit Price||Board Price|
|Header 4 x 1||1||Bitsbox||CN202||£0.06||£0.06|
|Header 6 x 1 – Male||1||Bitsbox||CN203||£0.21||£0.21|
|Header 6 x 1 – Female||1||Bitsbox||CN259||£0.25||£0.25|
|Single AND Gate||SOT353||1||RS Components||751-2806||£0.04||£0.04|
Now we sit back and wait for two weeks whilst the boards are manufactured.