Nikon D70 Remote Control PCB Layout
Sunday, October 13th, 2013Today, 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.
Schematic Changes
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:
Nikon D70 Remote Schematic (Rev A)
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.
PCB Layout
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:
Nikon D70 Remote Board Layout
And in 3D:
Nikon D70 Remote 3D Impression
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 |
| STM8S | TSSOP20 | 1 | RS Components | 724-9895 | £0.91 | £0.91 | |
| C1 | 1uF | 1206 | 1 | RS Components | 264-4179 | £0.05 | £0.05 |
| C2 | 100nF | 1206 | 1 | RS Components | 766-1126 | £0.01 | £0.01 |
| 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 | ||
| R1 | 10K | 1206 | 1 | RS Components | 223-2394 | £0.02 | £0.02 |
| R2 | 1K | 0805 | 1 | RS Components | 223-0427 | £0.01 | £0.01 |
| R3 | 2K2 | 0805 | 1 | RS Components | 721-8508 | £0.08 | £0.08 |
| R4 | 100 | 0402 | 1 | RS Components | 667-8602 | £0.01 | £0.01 |
| LED | 1 | RS Components | 654-5767 | £0.05 | £0.05 | ||
| 2N7002 | SOT23 | 1 | RS Components | 780-0478 | £0.02 | £0.02 | |
| Single AND Gate | SOT353 | 1 | RS Components | 751-2806 | £0.04 | £0.04 | |
| Power Switch | 1 | Bitsbox | SW109 | £0.88 | £0.88 | ||
| Reset Switch | 1 | Bitsbox | SW08 | £0.38 | £0.38 | ||
| IR LED | 1 | Bitsbox | TOP022 | £0.20 | £0.20 | ||
| Total | £3.18 |
Conclusion
Now we sit back and wait for two weeks whilst the boards are manufactured.
