Schakelbord first
About the Schakelbord first PCB
Schakelbord first is an open source AVR/Arduino PCB design by robbertvdzon, published on GitHub. It is a 2-layer board measuring 220.5 × 140.1 mm, with 111 components from 26 distinct parts.
Its main chip is the Arduino_Nano_ESP32, from the AVR/Arduino family. Other key parts include the MCP23017x-x-SP. By type, the board carries 45 resistors, 33 diodes, 12 transistors, 11 connectors, 8 relays and 1 IC.
Main components on the Schakelbord first
Schakelbord first bill of materials (BOM)
111 components, 26 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | MCP23017x-x-SP | DIP-28_W7.62mm | U1 |
| 1 | Arduino_Nano_ESP32 | Arduino_Nano | A1 |
| 9 | BC337 | TO-92_Inline | Q1, Q5, Q6, Q9, Q10, Q11, Q12, Q13 +1 |
| 3 | IRLZ44N | TO-220-3_Vertical | Q2, Q3, Q15 |
| 1 | Screw_Terminal_01x03 | TerminalBlock_Phoenix_MKDS-1,5-3-5.08_1x03_P5.08mm_Horizontal | J1 |
| 1 | Power | TerminalBlock_Phoenix_MKDS-1,5-2-5.08_1x02_P5.08mm_Horizontal | J3 |
| 1 | mosfets | TerminalBlock_Phoenix_MKDS-1,5-3_1x03_P5.00mm_Horizontal | J4 |
| 1 | I/O nano | TerminalBlock_Phoenix_MKDS-1,5-4-5.08_1x04_P5.08mm_Horizontal | J12 |
| 1 | Relais 7&8 | TerminalBlock_Phoenix_MKDS-1,5-4-5.08_1x04_P5.08mm_Horizontal | J15 |
| 1 | Alalog i/o | TerminalBlock_Phoenix_MKDS-1,5-5-5.08_1x05_P5.08mm_Horizontal | J16 |
| 1 | Extra 1-4 | TerminalBlock_Phoenix_MKDS-1,5-4-5.08_1x04_P5.08mm_Horizontal | J17 |
| 1 | Extra 5-8 | TerminalBlock_Phoenix_MKDS-1,5-4-5.08_1x04_P5.08mm_Horizontal | J18 |
| 1 | Relais 5&6 | TerminalBlock_Phoenix_MKDS-1,5-4-5.08_1x04_P5.08mm_Horizontal | J19 |
| 1 | Relais 3&4 | TerminalBlock_Phoenix_MKDS-1,5-4-5.08_1x04_P5.08mm_Horizontal | J20 |
| 1 | Relais 1&2 | TerminalBlock_Phoenix_MKDS-1,5-4-5.08_1x04_P5.08mm_Horizontal | J21 |
| 8 | SANYOU_SRD_Form_C | Relay_SPDT_SANYOU_SRD_Series_Form_C | K3, K4, K5, K6, K7, K8, K9, K10 |
| 8 | 1N4007 | D_DO-41_SOD81_P10.16mm_Horizontal | D1, D2, D3, D4, D6, D7, D8, D9 |
| 25 | LED | LED_D5.0mm | D5, D17, D32, D33, D34, D35, D36, D37 +17 |
| 1 | 2k2 | R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R1 |
| 1 | 3k3 | R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R2 |
Show 6 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 1500 | R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R7 |
| 4 | 10K | R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R8, R24, R27, R30 |
| 25 | 1K | R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R9, R31, R44, R45, R46, R47, R48, R49 +17 |
| 3 | 120R | R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R23, R26, R29 |
| 8 | 680 | R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R34, R35, R36, R37, R38, R39, R40, R41 |
| 2 | 4k7 | R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R61, R62 |
Schakelbord first design files
The KiCad project lives in the robbertvdzon/pepernotenmachine repository on GitHub; these links point at the commit this page was built from.
Schakelbord first: common questions
What microcontroller does the Schakelbord first use?
The Schakelbord first is built around the Arduino_Nano_ESP32, from the AVR/Arduino family.
How big is the Schakelbord first PCB?
The Schakelbord first measures 220.5 × 140.1 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Schakelbord first?
111 components, from 26 distinct parts. The full bill of materials is listed on this page.
Where can I download the Schakelbord first design files?
From the robbertvdzon/pepernotenmachine repository on GitHub, which has the KiCad layout; the links under Design files point to each one.
Can I use the Schakelbord first design in my own project?
The repository has no license, so all rights stay with robbertvdzon. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the Schakelbord first without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug AVR/Arduino firmware against it before you order a PCB.
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